/ J. Lloyd, O. Shibistova et al // Tellus. Series B: Chemical and physical meteorology. - 2002. - Vol. 54B, № 5. - С. 590-610
Аннотация: We present a first analysis of data (June 1998 to December 2000) from the long-term eddy covariance site established in a Pinus sylvestris stand near Zotino in central Siberia as part of the EUROSIBERIAN CARBONFLUX project. As well as examining seasonal patterns in netecosystem exchange (N-E), daily, seasonal and annual estimates of the canopy photosynthesis (or gross primary productivity, G(P)) were obtained using N-E and ecosystem respiration measurements. Although the forest was a small (but significant) source of CO2 throughout the snow season (typically mid-October to early May) there was a rapid commencement of photosynthetic capacity shortly following the commencement of above-zero air temperatures in spring: in 1999 the forest went from a quiescent state to significant photosynthetic activity in only a few days. Nevertheless, canopy photosynthetic capacity was observed to continue to increase slowly throughout the summer months for both 1999 and 2000, reaching a maximum capacity in early August. During September there was a marked decline in canopy photosynthesis which was only partially attributable to less favourable environmental conditions. This suggests a reduction in canopy photosynthetic capacity in autumn, perhaps associated with the cold hardening process. For individual time periods the canopy. photosynthetic rate was mostly dependent upon incoming photon irradiance. However, reductions in both canopy conductance and overall photosynthetic rate in response to high canopy-to-air vapour differences were clearly evident on hot dry days. The relationship between canopy conductance and photosynthesis was examined using Cowan's notion of optimality in which stomata serve to maximise the marginal evaporative cost of plant carbon gain. The associated Lagrangian multiplier (lambda) was surprisingly constant throughout the growing season. Somewhat remarkably, however, its value was markedly different between years, being 416 mol mol(-1) in 1999 but 815 mol mol(-1) in 2000. Overall the forest was a substantial sink for CO2 in both 1999 and 2000: around 13 Mol C m(-2) a(-1). Data from this experiment, when combined with estimates of net primary productivity from biomass sampling suggest that about 20% of this sink was associated with increasing plant biomass and about 80% with an increase in the litter and soil organic carbon pools. This high implied rate of carbon accumulation in the litter soil organic matter pool seems unsustainable in the long term and is hard to explain on the basis of current knowledge.
WOS,
Scopus
Держатели документа:
Russian Acad Sci, VN Sukachev Forest Inst, Siberian Branch, Krasnoyarsk 66003, Russia
Доп.точки доступа:
Lloyd, J.; Лойд Дж.; Shibistova, Olga Borisovna; Шибистова, Ольга Борисовна
Труды сотрудников ИЛ им. В.Н. Сукачева СО РАН
w10=
Найдено документов в текущей БД: 16
Seasonal and annual variations in the photosynthetic productivity and carbon balance of a central Siberian pine forest
Soil and canopy CO2, 13CO2, H2O and sensible heat flux partitions in a forest canopy inferred from concentration measurements
/ J.M. Styles et al, O. Shibistova // Tellus. Series B: Chemical and physical meteorology. - 2002. - Vol. 54B, № 5. - С. 655-676
Аннотация: A canopy scale model is presented that utilises Lagrangian dispersal theory to describe the relationship between source distribution and concentration within the canopy. The present study differs from previous studies in three ways: (1) source/sink distributions are solved simultaneously for CO2, (CO2)-C-13, H2O and sensible heat to find a solution consistent with leaf-level constraints imposed by photosynthetic capacity, stomatal and boundary layer conductance, available energy and carbon isotopic discrimination during diffusion and carboxylation; (2) the model is used to solve for parameters controlling the nonlinear source interactions rather than the sources themselves; and (3) this study used plant physiological principles to allow the incorporation of within- and above-canopy measurements of the C-13/C-12 ratios Of CO2 as an additional constraint. Source strengths Of CO2, H2O, sensible heat and (CO2)-C-13 within a Siberian mixed-coniferous forest were constrained by biochemical and energy-balance principles applied to sun and shaded leaves throughout the canopy. Parameters relating to maximum photosynthetic capacity, stomatal conductance, radiation penetration and turbulence structure were determined by the optimisation procedure to match modelled and measured concentration profiles, effectively inverting the concentration data. Ground fluxes Of CO2, H2O and sensible heat were also determined by the inversion. Total ecosystem fluxes predicted from the inversion were compared to hourly averaged above-canopy eddy covariance measurements over a ten-day period, with good agreement. Model results showed that stomatal conductance and maximum photosynthetic capacity were depressed due to the low temperatures experienced during snow melt; radiation penetrated further than simple theoretical predictions because of leaf clumping and penumbra, and stability effects were important in the morning and evening. The inversion was limited by little vertical structure in the concentration profiles, particularly of water vapour, and by co-dependence of canopy parameters.
WOS,
Scopus
Держатели документа:
VN Sukachev Inst Forests, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Styles , J.M.; Стайлес Дж.М.; Shibistova, Olga Borisovna; Шибистова, Ольга Борисовна
Аннотация: A canopy scale model is presented that utilises Lagrangian dispersal theory to describe the relationship between source distribution and concentration within the canopy. The present study differs from previous studies in three ways: (1) source/sink distributions are solved simultaneously for CO2, (CO2)-C-13, H2O and sensible heat to find a solution consistent with leaf-level constraints imposed by photosynthetic capacity, stomatal and boundary layer conductance, available energy and carbon isotopic discrimination during diffusion and carboxylation; (2) the model is used to solve for parameters controlling the nonlinear source interactions rather than the sources themselves; and (3) this study used plant physiological principles to allow the incorporation of within- and above-canopy measurements of the C-13/C-12 ratios Of CO2 as an additional constraint. Source strengths Of CO2, H2O, sensible heat and (CO2)-C-13 within a Siberian mixed-coniferous forest were constrained by biochemical and energy-balance principles applied to sun and shaded leaves throughout the canopy. Parameters relating to maximum photosynthetic capacity, stomatal conductance, radiation penetration and turbulence structure were determined by the optimisation procedure to match modelled and measured concentration profiles, effectively inverting the concentration data. Ground fluxes Of CO2, H2O and sensible heat were also determined by the inversion. Total ecosystem fluxes predicted from the inversion were compared to hourly averaged above-canopy eddy covariance measurements over a ten-day period, with good agreement. Model results showed that stomatal conductance and maximum photosynthetic capacity were depressed due to the low temperatures experienced during snow melt; radiation penetrated further than simple theoretical predictions because of leaf clumping and penumbra, and stability effects were important in the morning and evening. The inversion was limited by little vertical structure in the concentration profiles, particularly of water vapour, and by co-dependence of canopy parameters.
WOS,
Scopus
Держатели документа:
VN Sukachev Inst Forests, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Styles , J.M.; Стайлес Дж.М.; Shibistova, Olga Borisovna; Шибистова, Ольга Борисовна
Xylem plasticity allows rapid hydraulic adjustment to annual climatic variability
/ M. . Bryukhanova, P. . Fonti // Trees-Struct. Funct. - 2013. - Vol. 27, Is. 3. - P485-496, DOI 10.1007/s00468-012-0802-8. - Cited References: 45. - This study was supported by Swiss National Foundation through an International short visit (Grant number: #131408) and through the cooperation on the project INTEGRAL (#121859). We would like to thank David Frank and Georg von Arx for their assistance and critical discussion of an earlier version of the manuscript, and Kathlene English and Gregory King for the English review.
. - 12. - ISSN 0931-1890
РУБ Forestry
Аннотация: Thanks to acclimation, trees overcome environmental changes and endure for centuries. The anatomy of water conducting cells is an important factor determining plant success. Forming cells are coupled with the environment and their properties are naturally archived in the wood. Its variability across tree rings can thus provide a retrospective of plant's hydraulic adjustments. In this work, we measured lumen and wall thickness of tracheids along tree-rings to explore how trees regulate their conducting system under variable plant-water conditions. Tracheids were measured along 51 dated rings of five mature Larix decidua and Picea abies trees from a low elevation site. Anatomical-based chronologies of annual growth performance, hydraulic conductance and safety, and construction costs were built. Similarities among chronologies and the relation to monthly climate data were analyzed. Most parameters displayed high annual plasticity which was partly coherent among trees and mostly associated with radial growth. In general, summer drought reduced growth and potential hydraulic conductivity of the forming ring, and increased hydraulic safety and construction costs. To evaluate the functional relevance of the annual acclimation, the conductivity of the forming ring relative to the entire sapwood needs to be assessed.
Полный текст,
WOS,
Scopus
Держатели документа:
[Bryukhanova, Marina] VN Sukachev Inst Forest SB RAS, Krasnoyarsk 660036, Russia
[Fonti, Patrick] WSL Swiss Fed Res Inst, CH-8903 Zurich, Switzerland
Доп.точки доступа:
Bryukhanova, M...; Fonti, P...
Рубрики:
EARLYWOOD VESSELS
PINUS-SYLVESTRIS
WOOD DENSITY
TRACHEID DIMENSIONS
SHADE-TOLERANCE
SCOTS PINE
DROUGHT
GROWTH
PLANTS
VULNERABILITY
Кл.слова (ненормированные):
Tree-ring anatomy -- Tracheid-cell chronologies -- Plant-water relations -- Larix decidua -- Picea abies
EARLYWOOD VESSELS
PINUS-SYLVESTRIS
WOOD DENSITY
TRACHEID DIMENSIONS
SHADE-TOLERANCE
SCOTS PINE
DROUGHT
GROWTH
PLANTS
VULNERABILITY
Кл.слова (ненормированные):
Tree-ring anatomy -- Tracheid-cell chronologies -- Plant-water relations -- Larix decidua -- Picea abies
Аннотация: Thanks to acclimation, trees overcome environmental changes and endure for centuries. The anatomy of water conducting cells is an important factor determining plant success. Forming cells are coupled with the environment and their properties are naturally archived in the wood. Its variability across tree rings can thus provide a retrospective of plant's hydraulic adjustments. In this work, we measured lumen and wall thickness of tracheids along tree-rings to explore how trees regulate their conducting system under variable plant-water conditions. Tracheids were measured along 51 dated rings of five mature Larix decidua and Picea abies trees from a low elevation site. Anatomical-based chronologies of annual growth performance, hydraulic conductance and safety, and construction costs were built. Similarities among chronologies and the relation to monthly climate data were analyzed. Most parameters displayed high annual plasticity which was partly coherent among trees and mostly associated with radial growth. In general, summer drought reduced growth and potential hydraulic conductivity of the forming ring, and increased hydraulic safety and construction costs. To evaluate the functional relevance of the annual acclimation, the conductivity of the forming ring relative to the entire sapwood needs to be assessed.
Полный текст,
WOS,
Scopus
Держатели документа:
[Bryukhanova, Marina] VN Sukachev Inst Forest SB RAS, Krasnoyarsk 660036, Russia
[Fonti, Patrick] WSL Swiss Fed Res Inst, CH-8903 Zurich, Switzerland
Доп.точки доступа:
Bryukhanova, M...; Fonti, P...
Response of central Siberian Scots pine to soil water deficit and long-term trends in atmospheric CO2 concentration
[Text] / A. . Arneth [et al.] // Glob. Biogeochem. Cycle. - 2002. - Vol. 16, Is. 1. - Ст. 1005, DOI 10.1029/2000GB001374. - Cited References: 70
. - 13. - ISSN 0886-6236
РУБ Environmental Sciences + Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences
Аннотация: [1] Twenty tree ring C-13/C-12 ratio chronologies from Pinus sylvestris (Scots pine) trees were determined from five locations sampled along the Yenisei River, spaced over a total distance of similar to1000 km between the cities of Turuhansk (66degreesN) and Krasnoyarsk (56degreesN). The transect covered the major part of the natural distribution of Scots pine in the region with median growing season temperatures and precipitation varying from 12.2degreesC and 218 mm to 14.0degreesC and 278 mm for Turuhansk and Krasnoyarsk, respectively. A key focus of the study was to investigate the effects of variations in temperature, precipitation, and atmospheric CO2 concentration on long-and short-term variation in photosynthetic C-13 discrimination during photosynthesis and the marginal cost of tree water use, as reflected in the differences in the historical records of the C-13/C-12 ratio in wood cellulose compared to that of the atmosphere (Delta(13)C(c)). In 17 of the 20 samples, trees Delta(13)C(c) has declined during the last 150 years, particularly so during the second half of the twentieth century. Using a model of stomatal behaviour combined with a process-based photosynthesis model, we deduce that this trend indicates a long-term decrease in canopy stomatal conductance, probably in response to increasing atmospheric CO2 concentrations. This response being observed for most trees along the transect is suggestive of widespread decreases in Delta(13)C(c) and increased water use efficiency for Scots pine in central Siberia over the last century. Overlying short-term variations in Delta(13)C(c) were also accounted for by the model and were related to variations in growing season soil water deficit and atmospheric humidity.
WOS,
Scopus
Держатели документа:
Manaaki Whenua, Landcare Res, Lincoln, New Zealand
Max Planck Inst Biogeochem, D-07701 Jena, Germany
Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT 0200, Australia
Inst Evolut & Ecol Problems, Svertsov Lab, Moscow 117071, Russia
VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia
Univ S Bohemia, Fac Biol Sci, Ceske Budejovice, Czech Republic
Inst Soil Biol AS CR, Ceske Budejovice, Czech Republic
Доп.точки доступа:
Arneth, A...; Lloyd, J...; Santruckova, H...; Bird, M...; Grigoryev, S...; Kalaschnikov, Y.N.; Gleixner, G...; Schulze, E.D.
Рубрики:
CARBON-ISOTOPE DISCRIMINATION
NORTHERN HEMISPHERIC TREES
PLANT-GROWTH RESPONSES
ELEVATED CO2
USE EFFICIENCY
GAS-EXCHANGE
STOMATAL CONDUCTANCE
C-13 DISCRIMINATION
FOREST PRODUCTIVITY
FAGUS-SYLVATICA
Кл.слова (ненормированные):
stable isotopes -- boreal forest -- carbon cycle -- photosynthesis -- conductance -- optimality
CARBON-ISOTOPE DISCRIMINATION
NORTHERN HEMISPHERIC TREES
PLANT-GROWTH RESPONSES
ELEVATED CO2
USE EFFICIENCY
GAS-EXCHANGE
STOMATAL CONDUCTANCE
C-13 DISCRIMINATION
FOREST PRODUCTIVITY
FAGUS-SYLVATICA
Кл.слова (ненормированные):
stable isotopes -- boreal forest -- carbon cycle -- photosynthesis -- conductance -- optimality
Аннотация: [1] Twenty tree ring C-13/C-12 ratio chronologies from Pinus sylvestris (Scots pine) trees were determined from five locations sampled along the Yenisei River, spaced over a total distance of similar to1000 km between the cities of Turuhansk (66degreesN) and Krasnoyarsk (56degreesN). The transect covered the major part of the natural distribution of Scots pine in the region with median growing season temperatures and precipitation varying from 12.2degreesC and 218 mm to 14.0degreesC and 278 mm for Turuhansk and Krasnoyarsk, respectively. A key focus of the study was to investigate the effects of variations in temperature, precipitation, and atmospheric CO2 concentration on long-and short-term variation in photosynthetic C-13 discrimination during photosynthesis and the marginal cost of tree water use, as reflected in the differences in the historical records of the C-13/C-12 ratio in wood cellulose compared to that of the atmosphere (Delta(13)C(c)). In 17 of the 20 samples, trees Delta(13)C(c) has declined during the last 150 years, particularly so during the second half of the twentieth century. Using a model of stomatal behaviour combined with a process-based photosynthesis model, we deduce that this trend indicates a long-term decrease in canopy stomatal conductance, probably in response to increasing atmospheric CO2 concentrations. This response being observed for most trees along the transect is suggestive of widespread decreases in Delta(13)C(c) and increased water use efficiency for Scots pine in central Siberia over the last century. Overlying short-term variations in Delta(13)C(c) were also accounted for by the model and were related to variations in growing season soil water deficit and atmospheric humidity.
WOS,
Scopus
Держатели документа:
Manaaki Whenua, Landcare Res, Lincoln, New Zealand
Max Planck Inst Biogeochem, D-07701 Jena, Germany
Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT 0200, Australia
Inst Evolut & Ecol Problems, Svertsov Lab, Moscow 117071, Russia
VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia
Univ S Bohemia, Fac Biol Sci, Ceske Budejovice, Czech Republic
Inst Soil Biol AS CR, Ceske Budejovice, Czech Republic
Доп.точки доступа:
Arneth, A...; Lloyd, J...; Santruckova, H...; Bird, M...; Grigoryev, S...; Kalaschnikov, Y.N.; Gleixner, G...; Schulze, E.D.
Do centennial tree-ring and stable isotope trends of Larix gmelinii (Rupr.) Rupr. indicate increasing water shortage in the Siberian north?
[Text] / O. V. Sidorova [et al.] // Oecologia. - 2009. - Vol. 161, Is. 4. - P825-835, DOI 10.1007/s00442-009-1411-0. - Cited References: 70. - This study was supported by the Swiss National Science Foundation (SNF 200021_121838/1, PIOI2-119259), the Joint Research Project SCOPES (no. IB73A0-111134), and the Russian Foundation for Basic Research (RFBR nos. 06-05-64095-a, 07-04-96819r_enisey, 07-04-00293a, 09-05-98015_r_sibir_a). This work was conducted in collaboration with the European Union-funded Millennium Project (017008). Special thanks to Prof. Danny McCarroll from Swansea University, UK for useful discussion and valuable comments on the early stage of this manuscript. We would like to thank the editor-in-chief, Christian Korner, the handling editor, Dan Yakir, and the two anonymous reviewers for their helpful comments.
. - 11. - ISSN 0029-8549
РУБ Ecology
Аннотация: Tree-ring width of Larix gmelinii (Rupr.) Rupr., ratios of stable isotopes of C (delta(13)C) and O (delta(18)O) of whole wood and cellulose chronologies were obtained for the northern part of central Siberia (Tura, Russia) for the period 1864-2006. A strong decrease in the isotope ratios of O and C (after atmospheric delta(13)C corrections) and tree-ring width was observed for the period 1967-2005, while weather station data show a decrease in July precipitation, along with increasing July air temperature and vapor pressure deficit (VPD). Temperature at the end of May and the whole month of June mainly determines tree radial growth and marks the beginning of the vegetation period in this region. A positive correlation between tree-ring width and July precipitation was found for the calibration period 1929-2005. Positive significant correlations between C isotope chronologies and temperatures of June and July were found for whole wood and cellulose and negative relationships with July precipitation. These relationships are strengthened when the likely physiological response of trees to increased CO(2) is taken into account (by applying a recently developed delta(13)C correction). For the O isotope ratios, positive relationships with annual temperature, VPD of July and a negative correlation with annual precipitation were observed. The delta(18)O in tree rings may reflect annual rather than summer temperatures, due to the late melting of the winter snow and its contribution to the tree water supply in summer. We observed a clear change in the isotope and climate trends after the 1960s, resulting in a drastic change in the relationship between C and O isotope ratios from a negative to a positive correlation. According to isotope fractionation models, this indicates reduced stomatal conductance at a relatively constant photosynthetic rate, as a response of trees to water deficit for the last half century in this permafrost region.
Полный текст,
WOS,
Scopus
Держатели документа:
[Sidorova, Olga Vladimirovna
Shashkin, Alexander V.
Knorre, Anastasia A.
Prokushkin, Anatoliy S.
Vaganov, Eugene A.
Kirdyanov, Alexander V.] VN Sukachev Inst Forest, Akademgorodok 660036, Russia
[Sidorova, Olga Vladimirovna
Siegwolf, Rolf T. W.
Saurer, Matthias] Paul Scherrer Inst, CH-5232 Villigen, Switzerland
[Knorre, Anastasia A.
Vaganov, Eugene A.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
Доп.точки доступа:
Sidorova, O.V.; Siegwolf, RTW; Saurer, M...; Shashkin, A.V.; Knorre, A.A.; Prokushkin, A.S.; Vaganov, E.A.; Kirdyanov, A.V.; Swiss National Science Foundation [SNF 200021_121838/1, PIOI2-119259]; Joint Research Project SCOPES [IB73A0-111134]; Russian Foundation for Basic Research (RFBR) [06-05-64095-a, 07-04-96819r_enisey, 07-04-00293a, 09-05-98015_r_sibir_a]; European Union [017008]
Рубрики:
ATMOSPHERIC CO2
PINUS-SYLVESTRIS
CARBON ISOTOPES
CLIMATE SIGNAL
FRENCH ALPS
GROWTH
DELTA-C-13
CELLULOSE
RATIOS
OXYGEN
Кл.слова (ненормированные):
Stable carbon isotope ratio -- Stable oxygen isotope ratio -- Climatic changes -- Tree-ring width -- Tura
ATMOSPHERIC CO2
PINUS-SYLVESTRIS
CARBON ISOTOPES
CLIMATE SIGNAL
FRENCH ALPS
GROWTH
DELTA-C-13
CELLULOSE
RATIOS
OXYGEN
Кл.слова (ненормированные):
Stable carbon isotope ratio -- Stable oxygen isotope ratio -- Climatic changes -- Tree-ring width -- Tura
Аннотация: Tree-ring width of Larix gmelinii (Rupr.) Rupr., ratios of stable isotopes of C (delta(13)C) and O (delta(18)O) of whole wood and cellulose chronologies were obtained for the northern part of central Siberia (Tura, Russia) for the period 1864-2006. A strong decrease in the isotope ratios of O and C (after atmospheric delta(13)C corrections) and tree-ring width was observed for the period 1967-2005, while weather station data show a decrease in July precipitation, along with increasing July air temperature and vapor pressure deficit (VPD). Temperature at the end of May and the whole month of June mainly determines tree radial growth and marks the beginning of the vegetation period in this region. A positive correlation between tree-ring width and July precipitation was found for the calibration period 1929-2005. Positive significant correlations between C isotope chronologies and temperatures of June and July were found for whole wood and cellulose and negative relationships with July precipitation. These relationships are strengthened when the likely physiological response of trees to increased CO(2) is taken into account (by applying a recently developed delta(13)C correction). For the O isotope ratios, positive relationships with annual temperature, VPD of July and a negative correlation with annual precipitation were observed. The delta(18)O in tree rings may reflect annual rather than summer temperatures, due to the late melting of the winter snow and its contribution to the tree water supply in summer. We observed a clear change in the isotope and climate trends after the 1960s, resulting in a drastic change in the relationship between C and O isotope ratios from a negative to a positive correlation. According to isotope fractionation models, this indicates reduced stomatal conductance at a relatively constant photosynthetic rate, as a response of trees to water deficit for the last half century in this permafrost region.
Полный текст,
WOS,
Scopus
Держатели документа:
[Sidorova, Olga Vladimirovna
Shashkin, Alexander V.
Knorre, Anastasia A.
Prokushkin, Anatoliy S.
Vaganov, Eugene A.
Kirdyanov, Alexander V.] VN Sukachev Inst Forest, Akademgorodok 660036, Russia
[Sidorova, Olga Vladimirovna
Siegwolf, Rolf T. W.
Saurer, Matthias] Paul Scherrer Inst, CH-5232 Villigen, Switzerland
[Knorre, Anastasia A.
Vaganov, Eugene A.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
Доп.точки доступа:
Sidorova, O.V.; Siegwolf, RTW; Saurer, M...; Shashkin, A.V.; Knorre, A.A.; Prokushkin, A.S.; Vaganov, E.A.; Kirdyanov, A.V.; Swiss National Science Foundation [SNF 200021_121838/1, PIOI2-119259]; Joint Research Project SCOPES [IB73A0-111134]; Russian Foundation for Basic Research (RFBR) [06-05-64095-a, 07-04-96819r_enisey, 07-04-00293a, 09-05-98015_r_sibir_a]; European Union [017008]
Response of evapotranspiration and water availability to changing climate and land cover on the Mongolian Plateau during the 21st century
[Text] / Y. L. Liu [et al.] // Glob. Planet. Change. - 2013. - Vol. 108. - P85-99, DOI 10.1016/j.gloplacha.2013.06.008. - Cited References: 134. - This research is supported by the NASA Land Use and Land Cover Change program (NASA-NNX09AI26G, NN-H-04-Z-YS-005-N, and NNX09AM55G), the Department of Energy (DE-FG02-08ER64599), the National Science Foundation (NSF-1028291 and NSF-0919331), and the NSF Carbon and Water in the Earth Program (NSF-0630319). The computing is supported by the Rosen Center of High Performance Computing at Purdue University. Special acknowledgment is made here to Prof. Eric Wood of Princeton University for his generous provision of ET dataset in the Vinukollu et al. (2011). Diego Miralles acknowledges the support by the European Space Agency WACMOS-ET project (contract no.4000106711/12/I-NB).
. - 15. - ISSN 0921-8181
РУБ Geography, Physical + Geosciences, Multidisciplinary
Аннотация: Adequate quantification of evapotranspiration (ET) is crucial to assess how climate change and land cover change (LCC) interact with the hydrological cycle of terrestrial ecosystems. The Mongolian Plateau plays a unique role in the global climate system due to its ecological vulnerability, high sensitivity to climate change and disturbances, and limited water resources. Here, we used a version of the Terrestrial Ecosystem Model that has been modified to use Penman-Monteith (PM) based algorithms to calculate ET. Comparison of site-level ET estimates from the modified model with ET measured at eddy covariance (EC) sites showed better agreement than ET estimates from the MODIS ET product, which overestimates ET during the winter months. The modified model was then used to simulate ET during the 21st century under six climate change scenarios by excluding/including climate-induced LCC. We found that regional annual ET varies from 188 to 286 mm yr(-1) across all scenarios, and that it increases between 0.11 mm yr(-2) and 0.55 mm yr(-2) during the 21st century. A spatial gradient of ET that increases from the southwest to the northeast is consistent in all scenarios. Regional ET in grasslands, boreal forests and semi-desert/deserts ranges from 242 to 374 mm yr(-1), 213 to 278 mm yr(-1) and 100 to 199 mm yr(-1), respectively; and the degree of the ET increase follows the order of grassland, semi-desert/desert, and boreal forest. Across the plateau, climate-induced LCC does not lead to a substantial change (<5%) in ET relative to a static land cover, suggesting that climate change is more important than LCC in determining regional ET. Furthermore, the differences between precipitation and ET suggest that the available water for human use (water availability) on the plateau will not change significantly during the 21st century. However, more water is available and less area is threatened by water shortage in the Business-As-Usual emission scenarios relative to level-one stabilization emission scenarios. (C) 2013 Elsevier B.V. All rights reserved.
Полный текст,
WOS,
Scopus
Держатели документа:
[Liu, Yaling
Zhuang, Qianlai
Chen, Min
He, Yujie] Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA
[Zhuang, Qianlai
Bowling, Laura] Purdue Univ, Dept Agron, W Lafayette, IN 47907 USA
[Pan, Zhihua] China Agr Univ, Coll Resources & Environm Sci, Beijing 100193, Peoples R China
[Pan, Zhihua] Minist Agr, Key Ecol & Environm Expt Stn Field Sci Observat H, Inner Mongolia 011705, Peoples R China
[Tchebakova, Nadja
Parfenova, Elena] Russian Acad Sci, VN Sukachev Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia
[Sokolov, Andrei] MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA
[Kicklighter, David
Melillo, Jerry] Marine Biol Lab, Ctr Ecosyst, Woods Hole, MA 02543 USA
[Sirin, Andrey] Russian Acad Sci, Inst Forest Sci, Lab Peatland Forestry & Ameliorat, Uspenskoye 143030, Moscow Oblast, Russia
[Zhou, Guangsheng] Chinese Acad Sci, State Key Lab Vegetat & Environm Change, Inst Bot, Beijing 100093, Peoples R China
[Chen, Jiquan] Univ Toledo, Dept Environm Sci, Toledo, OH 43606 USA
[Miralles, Diego] Univ Bristol, Sch Geog Sci, Bristol, Avon, England
Доп.точки доступа:
Liu, Y.L.; Zhuang, Q.L.; Chen, M...; Pan, Z.H.; Tchebakova, N...; Sokolov, A...; Kicklighter, D...; Melillo, J...; Sirin, A...; Zhou, G.S.; He, Y.J.; Chen, J.Q.; Bowling, L...; Miralles, D...; Parfenova, E...; NASA [NASA-NNX09AI26G, NN-H-04-Z-YS-005-N, NNX09AM55G]; Department of Energy [DE-FG02-08ER64599]; National Science Foundation [NSF-1028291, NSF-0919331, NSF-0630319]; European Space Agency WACMOS-ET project [4000106711/12/I-NB]
Рубрики:
LEAF-AREA INDEX
REFLECTANCE DISTRIBUTION FUNCTION
FARMING-PASTORAL ECOTONE
NET PRIMARY PRODUCTION
FOREST-STEPPE ECOTONE
SPACE-TIME CLIMATE
INNER-MONGOLIA
TERRESTRIAL ECOSYSTEMS
NITROGEN CONCENTRATION
STOMATAL CONDUCTANCE
Кл.слова (ненормированные):
Evapotranspiration -- Mongolian Plateau -- Terrestrial Ecosystem Model -- MODIS -- Climate change -- Land cover change
LEAF-AREA INDEX
REFLECTANCE DISTRIBUTION FUNCTION
FARMING-PASTORAL ECOTONE
NET PRIMARY PRODUCTION
FOREST-STEPPE ECOTONE
SPACE-TIME CLIMATE
INNER-MONGOLIA
TERRESTRIAL ECOSYSTEMS
NITROGEN CONCENTRATION
STOMATAL CONDUCTANCE
Кл.слова (ненормированные):
Evapotranspiration -- Mongolian Plateau -- Terrestrial Ecosystem Model -- MODIS -- Climate change -- Land cover change
Аннотация: Adequate quantification of evapotranspiration (ET) is crucial to assess how climate change and land cover change (LCC) interact with the hydrological cycle of terrestrial ecosystems. The Mongolian Plateau plays a unique role in the global climate system due to its ecological vulnerability, high sensitivity to climate change and disturbances, and limited water resources. Here, we used a version of the Terrestrial Ecosystem Model that has been modified to use Penman-Monteith (PM) based algorithms to calculate ET. Comparison of site-level ET estimates from the modified model with ET measured at eddy covariance (EC) sites showed better agreement than ET estimates from the MODIS ET product, which overestimates ET during the winter months. The modified model was then used to simulate ET during the 21st century under six climate change scenarios by excluding/including climate-induced LCC. We found that regional annual ET varies from 188 to 286 mm yr(-1) across all scenarios, and that it increases between 0.11 mm yr(-2) and 0.55 mm yr(-2) during the 21st century. A spatial gradient of ET that increases from the southwest to the northeast is consistent in all scenarios. Regional ET in grasslands, boreal forests and semi-desert/deserts ranges from 242 to 374 mm yr(-1), 213 to 278 mm yr(-1) and 100 to 199 mm yr(-1), respectively; and the degree of the ET increase follows the order of grassland, semi-desert/desert, and boreal forest. Across the plateau, climate-induced LCC does not lead to a substantial change (<5%) in ET relative to a static land cover, suggesting that climate change is more important than LCC in determining regional ET. Furthermore, the differences between precipitation and ET suggest that the available water for human use (water availability) on the plateau will not change significantly during the 21st century. However, more water is available and less area is threatened by water shortage in the Business-As-Usual emission scenarios relative to level-one stabilization emission scenarios. (C) 2013 Elsevier B.V. All rights reserved.
Полный текст,
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Scopus
Держатели документа:
[Liu, Yaling
Zhuang, Qianlai
Chen, Min
He, Yujie] Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA
[Zhuang, Qianlai
Bowling, Laura] Purdue Univ, Dept Agron, W Lafayette, IN 47907 USA
[Pan, Zhihua] China Agr Univ, Coll Resources & Environm Sci, Beijing 100193, Peoples R China
[Pan, Zhihua] Minist Agr, Key Ecol & Environm Expt Stn Field Sci Observat H, Inner Mongolia 011705, Peoples R China
[Tchebakova, Nadja
Parfenova, Elena] Russian Acad Sci, VN Sukachev Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia
[Sokolov, Andrei] MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA
[Kicklighter, David
Melillo, Jerry] Marine Biol Lab, Ctr Ecosyst, Woods Hole, MA 02543 USA
[Sirin, Andrey] Russian Acad Sci, Inst Forest Sci, Lab Peatland Forestry & Ameliorat, Uspenskoye 143030, Moscow Oblast, Russia
[Zhou, Guangsheng] Chinese Acad Sci, State Key Lab Vegetat & Environm Change, Inst Bot, Beijing 100093, Peoples R China
[Chen, Jiquan] Univ Toledo, Dept Environm Sci, Toledo, OH 43606 USA
[Miralles, Diego] Univ Bristol, Sch Geog Sci, Bristol, Avon, England
Доп.точки доступа:
Liu, Y.L.; Zhuang, Q.L.; Chen, M...; Pan, Z.H.; Tchebakova, N...; Sokolov, A...; Kicklighter, D...; Melillo, J...; Sirin, A...; Zhou, G.S.; He, Y.J.; Chen, J.Q.; Bowling, L...; Miralles, D...; Parfenova, E...; NASA [NASA-NNX09AI26G, NN-H-04-Z-YS-005-N, NNX09AM55G]; Department of Energy [DE-FG02-08ER64599]; National Science Foundation [NSF-1028291, NSF-0919331, NSF-0630319]; European Space Agency WACMOS-ET project [4000106711/12/I-NB]
Land-atmosphere energy exchange in Arctic tundra and boreal forest: available data and feedbacks to climate
[Text] / W. . Eugster [et al.] // Glob. Change Biol. - 2000. - Vol. 6. - P84-115, DOI 10.1046/j.1365-2486.2000.06015.x. - Cited References: 132
. - 32. - ISSN 1354-1013
РУБ Biodiversity Conservation + Ecology + Environmental Sciences
Аннотация: This paper summarizes and analyses available data on the surface energy balance of Arctic tundra and boreal forest. The complex interactions between ecosystems and their surface energy balance are also examined, including climatically induced shifts in ecosystem type that might amplify or reduce the effects of potential climatic change. High latitudes are characterized by large annual changes in solar input. Albedo decreases strongly from winter, when the surface is snow-covered, to summer, especially in nonforested regions such as Arctic tundra and boreal wetlands. Evapotranspiration (Q(E)) of high-latitude ecosystems is less than from a freely evaporating surface and decreases late in the season, when soil moisture declines, indicating stomatal control over Q(E), particularly in evergreen forests. Evergreen conifer forests have a canopy conductance half that of deciduous forests and consequently lower Q(E) and higher sensible heat flux (Q(H)), There is a broad overlap in energy partitioning between Arctic and boreal ecosystems, although Arctic ecosystems and light taiga generally have higher ground heat flux because there is less leaf and stem area to shade the ground surface, and the thermal gradient from the surface to permafrost is steeper. Permafrost creates a strong heat sink in summer that reduces surface temperature and therefore heat flux to the atmosphere. Loss of permafrost would therefore amplify climatic warming. If warming caused an increase in productivity and leaf area, or fire caused a shift from evergreen to deciduous forest, this would increase Q(E) and reduce Q(H). Potential future shifts in vegetation would have varying climate feedbacks, with largest effects caused by shifts from boreal conifer to shrubland or deciduous forest (or vice versa) and from Arctic coastal to wet tundra. An increase of logging activity in the boreal forests appears to reduce Q(E) by roughly 50% with little change in Q(H), while the ground heat flux is strongly enhanced.
Полный текст,
WOS,
Scopus
Держатели документа:
Univ Bern, Inst Geog, CH-3012 Bern, Switzerland
McMaster Univ, Sch Geog & Geol, Hamilton, ON L8S 4K1, Canada
Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA
Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA
NOAA, ERL, ATDD, Oak Ridge, TN 37831 USA
Natl Ctr Atmospher Res, Boulder, CO 80307 USA
Univ Alaska, Inst Arctic Biol, Fairbanks, AK 99775 USA
Russian Acad Sci, Inst Forestry, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Eugster, W...; Rouse, W.R.; Pielke, R.A.; McFadden, J.P.; Baldocchi, D.D.; Kittel, TGF; Chapin, F.S.; Liston, G.E.; Vidale, P.L.; Vaganov, E...; Chambers, S...
Рубрики:
WILLOW BIRCH FOREST
BLACK SPRUCE FOREST
HUDSON-BAY LOWLANDS
WATER-BALANCE
EASTERN SIBERIA
CARBON-DIOXIDE
EDDY-CORRELATION
NET-RADIATION
PINE FOREST
SEASONAL-VARIATION
Кл.слова (ненормированные):
Arctic tundra -- boreal forest -- circumpolar high-latitudes -- climate feedbacks -- eddy covariance flux data -- surface energy balance
WILLOW BIRCH FOREST
BLACK SPRUCE FOREST
HUDSON-BAY LOWLANDS
WATER-BALANCE
EASTERN SIBERIA
CARBON-DIOXIDE
EDDY-CORRELATION
NET-RADIATION
PINE FOREST
SEASONAL-VARIATION
Кл.слова (ненормированные):
Arctic tundra -- boreal forest -- circumpolar high-latitudes -- climate feedbacks -- eddy covariance flux data -- surface energy balance
Аннотация: This paper summarizes and analyses available data on the surface energy balance of Arctic tundra and boreal forest. The complex interactions between ecosystems and their surface energy balance are also examined, including climatically induced shifts in ecosystem type that might amplify or reduce the effects of potential climatic change. High latitudes are characterized by large annual changes in solar input. Albedo decreases strongly from winter, when the surface is snow-covered, to summer, especially in nonforested regions such as Arctic tundra and boreal wetlands. Evapotranspiration (Q(E)) of high-latitude ecosystems is less than from a freely evaporating surface and decreases late in the season, when soil moisture declines, indicating stomatal control over Q(E), particularly in evergreen forests. Evergreen conifer forests have a canopy conductance half that of deciduous forests and consequently lower Q(E) and higher sensible heat flux (Q(H)), There is a broad overlap in energy partitioning between Arctic and boreal ecosystems, although Arctic ecosystems and light taiga generally have higher ground heat flux because there is less leaf and stem area to shade the ground surface, and the thermal gradient from the surface to permafrost is steeper. Permafrost creates a strong heat sink in summer that reduces surface temperature and therefore heat flux to the atmosphere. Loss of permafrost would therefore amplify climatic warming. If warming caused an increase in productivity and leaf area, or fire caused a shift from evergreen to deciduous forest, this would increase Q(E) and reduce Q(H). Potential future shifts in vegetation would have varying climate feedbacks, with largest effects caused by shifts from boreal conifer to shrubland or deciduous forest (or vice versa) and from Arctic coastal to wet tundra. An increase of logging activity in the boreal forests appears to reduce Q(E) by roughly 50% with little change in Q(H), while the ground heat flux is strongly enhanced.
Полный текст,
WOS,
Scopus
Держатели документа:
Univ Bern, Inst Geog, CH-3012 Bern, Switzerland
McMaster Univ, Sch Geog & Geol, Hamilton, ON L8S 4K1, Canada
Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA
Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA
NOAA, ERL, ATDD, Oak Ridge, TN 37831 USA
Natl Ctr Atmospher Res, Boulder, CO 80307 USA
Univ Alaska, Inst Arctic Biol, Fairbanks, AK 99775 USA
Russian Acad Sci, Inst Forestry, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Eugster, W...; Rouse, W.R.; Pielke, R.A.; McFadden, J.P.; Baldocchi, D.D.; Kittel, TGF; Chapin, F.S.; Liston, G.E.; Vidale, P.L.; Vaganov, E...; Chambers, S...
Inter-annual and seasonal variability of radial growth, wood density and carbon isotope ratios in tree rings of beech (Fagus sylvatica) growing in Germany and Italy
[Text] / M. V. Skomarkova [et al.] // Trees-Struct. Funct. - 2006. - Vol. 20, Is. 5. - P571-586, DOI 10.1007/s00468-006-0072-4. - Cited References: 55
. - 16. - ISSN 0931-1890
РУБ Forestry
Аннотация: We investigated the variability of tree-ring width, wood density and C-13/C-12 in beech tree rings (Fagus sylvatica L.), and analyzed the influence of climatic variables and carbohydrate storage on these parameters. Wood cores were taken from dominant beech trees in three stands in Germany and Italy. We used densitometry to obtain density profiles of tree rings and laser-ablation-combustion-GC-IRMS to estimate carbon isotope composition (delta C-13) of wood. The sensitivity of ring width, wood density and delta C-13 to climatic variables differed; with tree-ring width responding to environmental conditions (temperature or precipitation) during the first half of a growing season and maximum density correlated with temperatures in the second part of a growing season (July-September). delta C-13 variations indicate re-allocation and storage processes and effects of drought during the main growing season. About 20% of inter-annual variation of tree-ring width was explained by the tree-ring width of the previous year. This was confirmed by delta C-13 of wood which showed a contribution of stored carbohydrates to growth in spring and a storage effect that competes with growth in autumn. Only mid-season delta C-13 of wood was related to concurrent assimilation and climate. The comparison of seasonal changes in tree-ring maximum wood density and isotope composition revealed that an increasing seasonal water deficit changes the relationship between density and C-13 composition from a negative relation in years with optimal moisture to a positive relationship in years with strong water deficit. The climate signal, however, is over-ridden by effects of stand density and crown structure (e.g., by forest management). There was an unexpected high variability in mid season delta C-13 values of wood between individual trees (-31 to -24 parts per thousand) which was attributed to competition between dominant trees as indicated by crown area, and microclimatological variations within the canopy. Maximum wood density showed less variation (930-990 g cm(-3) stop). The relationship between seasonal changes in tree-ring structure and C-13 composition can be used to study carbon storage and re-allocation, which is important for improving models of tree-ring growth and carbon isotope fractionation. About 20-30% of the tree-ring is affected by storage processes. The effects of storage on tree-ring width and the effects of forest structure put an additional uncertainty on using tree rings of broad leaved trees for climate reconstruction.
Полный текст,
WOS,
Scopus
Держатели документа:
Max Planck Inst Biogeochem, Jena, Germany
Russian Acad Sci, Inst Forest, SB, Krasnoyarsk 660036, Russia
Univ Calif Berkeley, ESPM Dept, Berkeley, CA 94720 USA
Доп.точки доступа:
Skomarkova, M.V.; Vaganov, E.A.; Mund, M...; Knohl, A...; Linke, P...; Boerner, A...; Schulze, E.D.
Рубрики:
ECOSYSTEM RESPIRATION
STOMATAL CONDUCTANCE
DECIDUOUS FOREST
PHLOEM SAP
DELTA-C-13
CLIMATE
L.
ASSIMILATION
PRODUCTS
EUROPE
Кл.слова (ненормированные):
carbohydrate storage -- climate -- dendrochonology -- drought -- stable carbon isotopes
ECOSYSTEM RESPIRATION
STOMATAL CONDUCTANCE
DECIDUOUS FOREST
PHLOEM SAP
DELTA-C-13
CLIMATE
L.
ASSIMILATION
PRODUCTS
EUROPE
Кл.слова (ненормированные):
carbohydrate storage -- climate -- dendrochonology -- drought -- stable carbon isotopes
Аннотация: We investigated the variability of tree-ring width, wood density and C-13/C-12 in beech tree rings (Fagus sylvatica L.), and analyzed the influence of climatic variables and carbohydrate storage on these parameters. Wood cores were taken from dominant beech trees in three stands in Germany and Italy. We used densitometry to obtain density profiles of tree rings and laser-ablation-combustion-GC-IRMS to estimate carbon isotope composition (delta C-13) of wood. The sensitivity of ring width, wood density and delta C-13 to climatic variables differed; with tree-ring width responding to environmental conditions (temperature or precipitation) during the first half of a growing season and maximum density correlated with temperatures in the second part of a growing season (July-September). delta C-13 variations indicate re-allocation and storage processes and effects of drought during the main growing season. About 20% of inter-annual variation of tree-ring width was explained by the tree-ring width of the previous year. This was confirmed by delta C-13 of wood which showed a contribution of stored carbohydrates to growth in spring and a storage effect that competes with growth in autumn. Only mid-season delta C-13 of wood was related to concurrent assimilation and climate. The comparison of seasonal changes in tree-ring maximum wood density and isotope composition revealed that an increasing seasonal water deficit changes the relationship between density and C-13 composition from a negative relation in years with optimal moisture to a positive relationship in years with strong water deficit. The climate signal, however, is over-ridden by effects of stand density and crown structure (e.g., by forest management). There was an unexpected high variability in mid season delta C-13 values of wood between individual trees (-31 to -24 parts per thousand) which was attributed to competition between dominant trees as indicated by crown area, and microclimatological variations within the canopy. Maximum wood density showed less variation (930-990 g cm(-3) stop). The relationship between seasonal changes in tree-ring structure and C-13 composition can be used to study carbon storage and re-allocation, which is important for improving models of tree-ring growth and carbon isotope fractionation. About 20-30% of the tree-ring is affected by storage processes. The effects of storage on tree-ring width and the effects of forest structure put an additional uncertainty on using tree rings of broad leaved trees for climate reconstruction.
Полный текст,
WOS,
Scopus
Держатели документа:
Max Planck Inst Biogeochem, Jena, Germany
Russian Acad Sci, Inst Forest, SB, Krasnoyarsk 660036, Russia
Univ Calif Berkeley, ESPM Dept, Berkeley, CA 94720 USA
Доп.точки доступа:
Skomarkova, M.V.; Vaganov, E.A.; Mund, M...; Knohl, A...; Linke, P...; Boerner, A...; Schulze, E.D.
The response of delta C-13, delta O-18 and cell anatomy of Larix gmelinii tree rings to differing soil active layer depths
[Text] / M. V. Bryukhanova [et al.] // Dendrochronologia. - 2015. - Vol. 34. - P51-59, DOI 10.1016/j.dendro.2015.05.002. - Cited References:50. - This work was supported by the Swiss National Science Foundation (Valorization Grant IZ76Z0_141967/1), the Joint Research Project SCOPES (IZ73Z0_128035/1) and Ministry of Education and Science of the Russian Federation (Grants from the President of RF for Young Scientists MK-5498.2012.4 and MK-1589.2014.4). The research is linked to activities conducted within the COST FP1106 network.
. - ISSN 1125-7865. - ISSN 1612-0051
РУБ Plant Sciences + Forestry
Аннотация: Global warming is most pronounced in high-latitude regions by altering habitat conditions and affecting permafrost degradation, which may significantly influence tree productivity and vegetation changes. In this study, by applying a "space-for-time" approach, we selected three plots of Larix gmelinii forest from a continuous permafrost zone in Siberia with different thermo-hydrological soil regimes and ground cover vegetation with the objective of assessing how tree growth and productivity will change under different stages of permafrost degradation. A tree-ring multi-proxy characterization of mature trees was used to identify shift in ecophysiological responses related to the modified plant-soil system. Variability of tree-ring width (1975-2009), stable isotope ratios (oxygen and carbon, 2000-2009) and xylem structural characteristics (2000-2009) under climatic conditions of particular years indicated that an increased depth of the soil active layer will initially lead to increase of tree productivity. However, due to an expected water use increase through transpiration, the system might progressively shift from a temperature to a moisture-limited environment. (C) 2015 Elsevier GmbH. All rights reserved.
WOS
Держатели документа:
RAS, VN Sukachev Inst Forest SB, Krasnoyarsk 660036, Russia.
WSL Swiss Fed Res Inst, CH-8903 Birmensdorf, Switzerland.
Paul Scherrer Inst, CH-5232 Villigen, Switzerland.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
ETH, Inst Terr Ecosyst, CH-8092 Zurich, Switzerland.
Доп.точки доступа:
Bryukhanova, Marina V.; Fonti, Patrick; Kirdyanov, Alexander V.; Siegwolf, Rolf T. W.; Saurer, Matthias; Pochebyt, Natalia P.; Churakova, O.V.; Prokushkin, Anatoly S.; Swiss National Science Foundation (Valorization Grant) [IZ76Z0_141967/1]; Joint Research Project SCOPES [IZ73Z0_128035/1]; Ministry of Education and Science of Russian Federation (RF for Young Scientists) [MK-5498.2012.4, MK-1589.2014.4]
Рубрики:
CLIMATE-CHANGE
STOMATAL CONDUCTANCE
SIBERIAN PERMAFROST
ARCTIC
Кл.слова (ненормированные):
Central Siberia -- Permafrost -- Thermo-hydrological regime of soils -- Tree-ring width -- Quantitative wood anatomy -- Stable C and O isotopes
CLIMATE-CHANGE
STOMATAL CONDUCTANCE
SIBERIAN PERMAFROST
ARCTIC
Кл.слова (ненормированные):
Central Siberia -- Permafrost -- Thermo-hydrological regime of soils -- Tree-ring width -- Quantitative wood anatomy -- Stable C and O isotopes
Аннотация: Global warming is most pronounced in high-latitude regions by altering habitat conditions and affecting permafrost degradation, which may significantly influence tree productivity and vegetation changes. In this study, by applying a "space-for-time" approach, we selected three plots of Larix gmelinii forest from a continuous permafrost zone in Siberia with different thermo-hydrological soil regimes and ground cover vegetation with the objective of assessing how tree growth and productivity will change under different stages of permafrost degradation. A tree-ring multi-proxy characterization of mature trees was used to identify shift in ecophysiological responses related to the modified plant-soil system. Variability of tree-ring width (1975-2009), stable isotope ratios (oxygen and carbon, 2000-2009) and xylem structural characteristics (2000-2009) under climatic conditions of particular years indicated that an increased depth of the soil active layer will initially lead to increase of tree productivity. However, due to an expected water use increase through transpiration, the system might progressively shift from a temperature to a moisture-limited environment. (C) 2015 Elsevier GmbH. All rights reserved.
WOS
Держатели документа:
RAS, VN Sukachev Inst Forest SB, Krasnoyarsk 660036, Russia.
WSL Swiss Fed Res Inst, CH-8903 Birmensdorf, Switzerland.
Paul Scherrer Inst, CH-5232 Villigen, Switzerland.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
ETH, Inst Terr Ecosyst, CH-8092 Zurich, Switzerland.
Доп.точки доступа:
Bryukhanova, Marina V.; Fonti, Patrick; Kirdyanov, Alexander V.; Siegwolf, Rolf T. W.; Saurer, Matthias; Pochebyt, Natalia P.; Churakova, O.V.; Prokushkin, Anatoly S.; Swiss National Science Foundation (Valorization Grant) [IZ76Z0_141967/1]; Joint Research Project SCOPES [IZ73Z0_128035/1]; Ministry of Education and Science of Russian Federation (RF for Young Scientists) [MK-5498.2012.4, MK-1589.2014.4]
Site-specific water-use strategies of mountain pine and larch to cope with recent climate change
[Text] / O. V. Churakova [et al.] // Tree Physiol. - 2016. - Vol. 36, Is. 8. - P942-953, DOI 10.1093/treephys/tpw060. - Cited References:42. - This work was supported by the Swiss National Science Foundation, Marie-Heim Voegtlin Programme PMPD2-145507 granted to O.V.C and COST-action FP1106 (SBF C12.0093) granted to M.S.
. - ISSN 0829-318X. - ISSN 1758-4469
РУБ Forestry
Аннотация: We aim to achieve a mechanistic understanding of the eco-physiological processes in Larix decidua and Pinus mugo var. uncinata growing on north- and south-facing aspects in the Swiss National Park in order to distinguish the short- and long-term effects of a changing climate. To strengthen the interpretation of the delta O-18 signal in tree rings and its coherence with the main factors and processes driving evaporative-delta O-18 needle water enrichment, we analyzed the delta O-18 in needle, xylem and soil water over the growing season in 2013 and applied the mechanistic Craig-Gordon model (1965) for the short-term responses. We found that delta O-18 needle water strongly reflected the variability of relative humidity mainly for larch, while only delta O-18 in pine xylem water showed a strong link to delta O-18 in precipitation. Larger differences in offsets between modeled and measured delta O-18 needle water for both species from the south-facing aspects were detected, which could be explained by the high transpiration rates. Different soil water and needle water responses for the two species indicate different water-use strategies, further modulated by the site conditions. To reveal the long-term physiological response of the studied trees to recent and past climate changes, we analyzed delta C-13 and delta O-18 in wood chronologies from 1900 to 2013. Summer temperatures as well as summer and annual amount of precipitations are important factors for growth of both studied species from both aspects. However, mountain pine trees reduced sensitivity to temperature changes, while precipitation changes come to play an important role for the period from 1980 to 2013. Intrinsic water-use efficiency (WUEi) calculated for larch trees since the 1990s reached a saturation point at elevated CO2. Divergent trends between pine WUEi and delta O-18 are most likely indicative of a decline of mountain pine trees and are also reflected in decoupling mechanisms in the isotope signals between needles and tree-rings.
WOS,
Смотреть статью
Держатели документа:
ETH, Inst Terr Ecosyst, Forest Ecol, Dept Environm Syst Sci, Univ Str 16, CH-8092 Zurich, Switzerland.
Paul Scherrer Inst, CH-5232 Villigen, Switzerland.
Univ Bern, Inst Geol Sci, Dendrolab Ch, Balzerstr 1 3, CH-3012 Bern, Switzerland.
SB RAS, VN Sukachev Inst Forest, Akademgorodok 660036, Russia.
Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.
Доп.точки доступа:
Churakova, O. V.; Saurer, Matthias; Bryukhanova, Marina V.; Siegwolf, Rolf T. W.; Bigler, Christof; Swiss National Science Foundation; Marie-Heim Voegtlin Programme [PMPD2-145507]; COST-action [FP1106 (SBF C12.0093)]
Рубрики:
INDUCED TREE MORTALITY
LEAF WATER
STOMATAL CONDUCTANCE
OXYGEN
Кл.слова (ненормированные):
delta C-13 and delta O-18 in wood -- delta O-18 in needle -- soil and xylem -- water -- intrinsic water-use efficiency -- pine decline -- tree-ring width
INDUCED TREE MORTALITY
LEAF WATER
STOMATAL CONDUCTANCE
OXYGEN
Кл.слова (ненормированные):
delta C-13 and delta O-18 in wood -- delta O-18 in needle -- soil and xylem -- water -- intrinsic water-use efficiency -- pine decline -- tree-ring width
Аннотация: We aim to achieve a mechanistic understanding of the eco-physiological processes in Larix decidua and Pinus mugo var. uncinata growing on north- and south-facing aspects in the Swiss National Park in order to distinguish the short- and long-term effects of a changing climate. To strengthen the interpretation of the delta O-18 signal in tree rings and its coherence with the main factors and processes driving evaporative-delta O-18 needle water enrichment, we analyzed the delta O-18 in needle, xylem and soil water over the growing season in 2013 and applied the mechanistic Craig-Gordon model (1965) for the short-term responses. We found that delta O-18 needle water strongly reflected the variability of relative humidity mainly for larch, while only delta O-18 in pine xylem water showed a strong link to delta O-18 in precipitation. Larger differences in offsets between modeled and measured delta O-18 needle water for both species from the south-facing aspects were detected, which could be explained by the high transpiration rates. Different soil water and needle water responses for the two species indicate different water-use strategies, further modulated by the site conditions. To reveal the long-term physiological response of the studied trees to recent and past climate changes, we analyzed delta C-13 and delta O-18 in wood chronologies from 1900 to 2013. Summer temperatures as well as summer and annual amount of precipitations are important factors for growth of both studied species from both aspects. However, mountain pine trees reduced sensitivity to temperature changes, while precipitation changes come to play an important role for the period from 1980 to 2013. Intrinsic water-use efficiency (WUEi) calculated for larch trees since the 1990s reached a saturation point at elevated CO2. Divergent trends between pine WUEi and delta O-18 are most likely indicative of a decline of mountain pine trees and are also reflected in decoupling mechanisms in the isotope signals between needles and tree-rings.
WOS,
Смотреть статью
Держатели документа:
ETH, Inst Terr Ecosyst, Forest Ecol, Dept Environm Syst Sci, Univ Str 16, CH-8092 Zurich, Switzerland.
Paul Scherrer Inst, CH-5232 Villigen, Switzerland.
Univ Bern, Inst Geol Sci, Dendrolab Ch, Balzerstr 1 3, CH-3012 Bern, Switzerland.
SB RAS, VN Sukachev Inst Forest, Akademgorodok 660036, Russia.
Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.
Доп.точки доступа:
Churakova, O. V.; Saurer, Matthias; Bryukhanova, Marina V.; Siegwolf, Rolf T. W.; Bigler, Christof; Swiss National Science Foundation; Marie-Heim Voegtlin Programme [PMPD2-145507]; COST-action [FP1106 (SBF C12.0093)]
Application of eco-physiological models to the climatic interpretation of delta C-13 and delta O-18 measured in Siberian larch tree-rings
/ O. V. Churakova [et al.] // Dendrochronologia. - 2016. - Vol. 39: Workshop on Current Status and the Potential of Tree-Ring Research in (JAN 20-21, 2015, Krasnoyarsk, RUSSIA). - P51-59, DOI 10.1016/j.dendro.2015.12.008. - Cited References:50
. - ISSN 1125-7865. - ISSN 1612-0051
РУБ Plant Sciences + Forestry + Geography, Physical
Аннотация: Tree-ring width and stable isotopic composition are widely used for the reconstruction of environmental conditions. Eco-physiological models simulating delta C-13 and delta O-18 provide tools to constrain the interpretation of measured tree-ring variations and their relationships to environmental variables. Here, we apply biochemical models of photosynthesis and a model of stomatal conductance to simulate the intra-annual dynamics of delta(13) C values in photo assimilates and tree-rings. We use these models to investigate the physiological responses of larch trees growing on permafrost to variability in precipitation and permafrost depth associated with regional temperature and precipitation changes. Tree-ring width, delta C-13 and delta O-18 in wood and cellulose were measured in larch (Larix cajanderi Mayr.) samples from northeastern Yakutia (69 degrees N, 148 degrees E) for the period from 1945 to 2004 and used for comparisons with modeled delta C-13 and delta O-18 data. Mechanistic models that quantify physical and biochemical fractionation processes leading to oxygen isotope variation in organic matter are used to identify source water for trees growing on permafrost in Siberia. These models allowed us to investigate the influence of a variety of climatic factors on Siberian forest ecosystem water relations that impact isotope fractionation. Based on delta C-13 and delta O-18 in tree wood and cellulose measurements as well as outputs from different eco-physiological models, we assume that larch trees from northeastern Yakutia can have limited access to the additional thawed permafrost water during dry summer periods. (C) 2015 Elsevier GmbH. All rights reserved.
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Univ Bern, Inst Geol Sci, Dendrolab Ch, CH-3012 Bern, Switzerland.
Swiss Fed Inst Technol, Dept Environm Sci, CH-8092 Zurich, Switzerland.
VN Sukachev Inst Forest SB RAS, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
INRA, UMR ISPA 1391, F-33140 Villenave Dornon, France.
CEA Saclay, Lab Sci Climat & Environm, F-91191 Gif Sur Yvette, France.
Paul Scherrer Inst, CH-5232 Villigen, Switzerland.
Univ Bern, Inst Phys, Climate & Environm Phys, CH-3012 Bern, Switzerland.
Univ Bern, Oeschger Ctr Climate Change Res, CH-3012 Bern, Switzerland.
Southern Oregon Univ, Dept Biol, Ashland, OR 97520 USA.
Доп.точки доступа:
Churakova, O. V.; Shashkin, Aleksandr V.; Siegwolf, Rolf T. W.; Spahni, Renato; Launois, Thomas; Saurer, Matthias; Bryukhanova, Marina V.; Benkova, Anna V.; Kuptsova, Anna V.; Peylin, Philippe; Vaganov, Eugene A.; Masson-Delmotte, Valerie; Roden, John
Рубрики:
GLOBAL VEGETATION MODEL
STABLE-ISOTOPES
WATER
OXYGEN
PRECIPITATION
Кл.слова (ненормированные):
Northeastern Yakutia -- Stable isotopes in tree-ring width -- Permafrost -- Thaw depth -- Water source -- Climate
GLOBAL VEGETATION MODEL
STABLE-ISOTOPES
WATER
OXYGEN
PRECIPITATION
Кл.слова (ненормированные):
Northeastern Yakutia -- Stable isotopes in tree-ring width -- Permafrost -- Thaw depth -- Water source -- Climate
Аннотация: Tree-ring width and stable isotopic composition are widely used for the reconstruction of environmental conditions. Eco-physiological models simulating delta C-13 and delta O-18 provide tools to constrain the interpretation of measured tree-ring variations and their relationships to environmental variables. Here, we apply biochemical models of photosynthesis and a model of stomatal conductance to simulate the intra-annual dynamics of delta(13) C values in photo assimilates and tree-rings. We use these models to investigate the physiological responses of larch trees growing on permafrost to variability in precipitation and permafrost depth associated with regional temperature and precipitation changes. Tree-ring width, delta C-13 and delta O-18 in wood and cellulose were measured in larch (Larix cajanderi Mayr.) samples from northeastern Yakutia (69 degrees N, 148 degrees E) for the period from 1945 to 2004 and used for comparisons with modeled delta C-13 and delta O-18 data. Mechanistic models that quantify physical and biochemical fractionation processes leading to oxygen isotope variation in organic matter are used to identify source water for trees growing on permafrost in Siberia. These models allowed us to investigate the influence of a variety of climatic factors on Siberian forest ecosystem water relations that impact isotope fractionation. Based on delta C-13 and delta O-18 in tree wood and cellulose measurements as well as outputs from different eco-physiological models, we assume that larch trees from northeastern Yakutia can have limited access to the additional thawed permafrost water during dry summer periods. (C) 2015 Elsevier GmbH. All rights reserved.
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Держатели документа:
Univ Bern, Inst Geol Sci, Dendrolab Ch, CH-3012 Bern, Switzerland.
Swiss Fed Inst Technol, Dept Environm Sci, CH-8092 Zurich, Switzerland.
VN Sukachev Inst Forest SB RAS, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
INRA, UMR ISPA 1391, F-33140 Villenave Dornon, France.
CEA Saclay, Lab Sci Climat & Environm, F-91191 Gif Sur Yvette, France.
Paul Scherrer Inst, CH-5232 Villigen, Switzerland.
Univ Bern, Inst Phys, Climate & Environm Phys, CH-3012 Bern, Switzerland.
Univ Bern, Oeschger Ctr Climate Change Res, CH-3012 Bern, Switzerland.
Southern Oregon Univ, Dept Biol, Ashland, OR 97520 USA.
Доп.точки доступа:
Churakova, O. V.; Shashkin, Aleksandr V.; Siegwolf, Rolf T. W.; Spahni, Renato; Launois, Thomas; Saurer, Matthias; Bryukhanova, Marina V.; Benkova, Anna V.; Kuptsova, Anna V.; Peylin, Philippe; Vaganov, Eugene A.; Masson-Delmotte, Valerie; Roden, John
Canopy transpiration of a Larix sibirica and Pinus sylvestris forest in Central Siberia
/ J. Urban [et al.] // Agric. For. Meterol. - 2019. - Vol. 271. - P64-72, DOI 10.1016/j.agrformet.2019.02.038
. - ISSN 0168-1923
Кл.слова (ненормированные):
Boreal forest -- Climate change -- Penman-Monteith -- Sap flow -- Scots pine -- Siberian larch -- Stomatal conductance -- Transpiration -- boreal forest -- coniferous forest -- coniferous tree -- evapotranspiration -- forest cover -- global warming -- growing season -- latent heat flux -- leaf area index -- Penman-Monteith equation -- sap flow -- sensible heat flux -- snowmelt -- soil moisture -- stomatal conductance -- vapor pressure -- water availability -- water use -- Siberia -- Larix -- Larix sibirica -- Pinus sylvestris
Аннотация: Russian boreal forests represent the largest forested region on Earth and comprise one-fifth of the world's forest cover. The two most common genera in Siberia are Larix and Pinus, which together cover more than 80% of the region's forested area. One observable ongoing effect of climate warming is that natural populations of Siberian larch are gradually being replaced by Scots pine. The present work focuses on comparing effects of environmental variables on sap flow density in two even-aged stands of Larix sibirica and Pinus sylvestris. While the two study stands were identical in age (49 years) with similar basal areas and leaf area index, they exhibited very different transpiration rates and response mechanisms to environmental signals. Stand water use was higher for larch than it was for pine, even though transpiration for deciduous larch trees occurred over shorter time periods. The cumulative annual transpiration of the larch stand was 284 ± 4 mm measured over two consecutive growing seasons (2015–2016), while for pine this was 20% lower. Seasonal transpiration accounted for 50% and 40% of the reference evapotranspiration and 91% and 67% of growing season precipitation for larch and pine, respectively. Water stored in soil provided an important source of water for transpiration, observed as roughly 100 mm, which was then replenished from snowmelt the following spring. The greatest difference between two species related to how well they controlled transpiration, notably in the context of high vapor pressure deficit; under these conditions, pine maintained greater control over transpiration than larch. For all soil moisture levels measured, larch transpired more water than pine. Importantly, our results point to potential future effects of global warming, most notably an increasing decline of larch forests, changes in the ratio between latent and sensitive heat fluxes, and significant modifications in ecosystem water availability. © 2019
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Держатели документа:
Siberian Federal University, Krasnoyarsk, Russian Federation
Sukhachev Institute of Forest SB RAS, Krasnoyarsk, Russian Federation
Faculty of Forestry and Wood Technology, Mendel University in Brno, Czech Republic
Доп.точки доступа:
Urban, J.; Rubtsov, A. V.; Urban, A. V.; Shashkin, A. V.; Benkova, V. E.
Кл.слова (ненормированные):
Boreal forest -- Climate change -- Penman-Monteith -- Sap flow -- Scots pine -- Siberian larch -- Stomatal conductance -- Transpiration -- boreal forest -- coniferous forest -- coniferous tree -- evapotranspiration -- forest cover -- global warming -- growing season -- latent heat flux -- leaf area index -- Penman-Monteith equation -- sap flow -- sensible heat flux -- snowmelt -- soil moisture -- stomatal conductance -- vapor pressure -- water availability -- water use -- Siberia -- Larix -- Larix sibirica -- Pinus sylvestris
Аннотация: Russian boreal forests represent the largest forested region on Earth and comprise one-fifth of the world's forest cover. The two most common genera in Siberia are Larix and Pinus, which together cover more than 80% of the region's forested area. One observable ongoing effect of climate warming is that natural populations of Siberian larch are gradually being replaced by Scots pine. The present work focuses on comparing effects of environmental variables on sap flow density in two even-aged stands of Larix sibirica and Pinus sylvestris. While the two study stands were identical in age (49 years) with similar basal areas and leaf area index, they exhibited very different transpiration rates and response mechanisms to environmental signals. Stand water use was higher for larch than it was for pine, even though transpiration for deciduous larch trees occurred over shorter time periods. The cumulative annual transpiration of the larch stand was 284 ± 4 mm measured over two consecutive growing seasons (2015–2016), while for pine this was 20% lower. Seasonal transpiration accounted for 50% and 40% of the reference evapotranspiration and 91% and 67% of growing season precipitation for larch and pine, respectively. Water stored in soil provided an important source of water for transpiration, observed as roughly 100 mm, which was then replenished from snowmelt the following spring. The greatest difference between two species related to how well they controlled transpiration, notably in the context of high vapor pressure deficit; under these conditions, pine maintained greater control over transpiration than larch. For all soil moisture levels measured, larch transpired more water than pine. Importantly, our results point to potential future effects of global warming, most notably an increasing decline of larch forests, changes in the ratio between latent and sensitive heat fluxes, and significant modifications in ecosystem water availability. © 2019
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Держатели документа:
Siberian Federal University, Krasnoyarsk, Russian Federation
Sukhachev Institute of Forest SB RAS, Krasnoyarsk, Russian Federation
Faculty of Forestry and Wood Technology, Mendel University in Brno, Czech Republic
Доп.точки доступа:
Urban, J.; Rubtsov, A. V.; Urban, A. V.; Shashkin, A. V.; Benkova, V. E.
Long-term ecological consequences of forest fires in the continuous permafrost zone of Siberia
/ A. V. Kirdyanov, M. Saurer, R. Siegwolf [et al.] // Environ. Res. Lett. - 2020. - Vol. 15, Is. 3. - Ст. 034061, DOI 10.1088/1748-9326/ab7469. - Cited References:77. - This study was supported by the Russian Science Foundation (project RSF 18-14-00072), and tree-ring isotopes were measured under the Swiss National Science Foundation Joint Research Project SCOPES (IZ73ZO_128035/1) and project SNF 182092. We thank the anonymous reviewers for their comments and suggestions, which improved the manuscript.
. - ISSN 1748-9326
РУБ Environmental Sciences + Meteorology & Atmospheric Sciences
Аннотация: Wildfires are an important factor in controlling forest ecosystem dynamics across the circumpolar boreal zone. An improved understanding of their direct and indirect, short- to long-term impacts on vegetation cover and permafrost-vegetation coupling is particularly important to predict changes in carbon, nutrient and water cycles under projected climate warming. Here, we apply dendrochronological techniques on a multi-parameter dataset to reconstruct the effect of wildfires on tree growth and seasonal permafrost thaw depth in Central Siberia. Based on annually-resolved and absolutely dated information from 19 Gmelin larch (Larix gmelinii (Rupr.) Rupr.) trees and active soil layer thickness measurements, we find substantial stand-level die-off, as well as the removal of ground vegetation and the organic layer following a major wildfire in 1896. Reduced stem growth coincides with increased delta C-13 in the cellulose of the surviving trees during the first decade after the wildfire, when stomatal conductance was reduced. The next six to seven decades are characterized by increased permafrost active soil layer thickness. During this period of post-wildfire ecosystem recovery, enhanced tree growth together with positive delta C-13 and negative delta O-18 trends are indicative of higher rates of photosynthesis and improved water supply. Afterwards, a thinner active soil layer leads to reduced growth because tree physiological processes become limited by summer temperature and water availability. Revealing long-term effects of forest fires on active soil layer thickness, ground vegetation composition and tree growth, this study demonstrates the importance of complex vegetation-permafrost interactions that modify the trajectory of post-fire forest recovery across much of the circumpolar boreal zone. To further quantify the influence of boreal wildfires on large-scale carbon cycle dynamics, future work should consider a wide range of tree species from different habitats in the high-northern latitudes.
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Держатели документа:
Univ Cambridge, Dept Geog, Cambridge CB2 3EN, England.
RAS, VN Sukachev Inst Forest SB, Fed Res Ctr, Krasnoyarsk Sci Ctr SB, Akademgorodok 660036, Russia.
Siberian Fed Univ, Svobodnii 79, Krasnoyarsk 660041, Russia.
Swiss Fed Res Inst WSL, CH-8903 Birmensdorf, Switzerland.
State Nat Reserve Stolby, Krasnoyarsk 660006, Russia.
Masaryk Univ, Dept Geog, Fac Sci, Brno 61300, Czech Republic.
Czech Acad Sci CzechGlobe, Global Change Res Inst, Brno 60300, Czech Republic.
Доп.точки доступа:
Kirdyanov, Alexander, V; Saurer, Matthias; Siegwolf, Rolf; Knorre, Anastasia A.; Prokushkin, Anatoly S.; Churakova, O. V.; Fonti, Marina, V; Buntgen, U.; Churakova, Olga V; Fonti, Marina; Russian Science FoundationRussian Science Foundation (RSF) [RSF 18-14-00072]; Swiss National Science Foundation Joint Research Project SCOPES [IZ73ZO_128035/1]; [SNF 182092]
Рубрики:
WATER-USE EFFICIENCY
TREE-RING
LARIX-GMELINII
BOREAL FOREST
CARBON
Кл.слова (ненормированные):
active soil layer -- boreal forest -- permafrost -- Siberia -- stable isotopes -- tree rings -- wildfire
WATER-USE EFFICIENCY
TREE-RING
LARIX-GMELINII
BOREAL FOREST
CARBON
Кл.слова (ненормированные):
active soil layer -- boreal forest -- permafrost -- Siberia -- stable isotopes -- tree rings -- wildfire
Аннотация: Wildfires are an important factor in controlling forest ecosystem dynamics across the circumpolar boreal zone. An improved understanding of their direct and indirect, short- to long-term impacts on vegetation cover and permafrost-vegetation coupling is particularly important to predict changes in carbon, nutrient and water cycles under projected climate warming. Here, we apply dendrochronological techniques on a multi-parameter dataset to reconstruct the effect of wildfires on tree growth and seasonal permafrost thaw depth in Central Siberia. Based on annually-resolved and absolutely dated information from 19 Gmelin larch (Larix gmelinii (Rupr.) Rupr.) trees and active soil layer thickness measurements, we find substantial stand-level die-off, as well as the removal of ground vegetation and the organic layer following a major wildfire in 1896. Reduced stem growth coincides with increased delta C-13 in the cellulose of the surviving trees during the first decade after the wildfire, when stomatal conductance was reduced. The next six to seven decades are characterized by increased permafrost active soil layer thickness. During this period of post-wildfire ecosystem recovery, enhanced tree growth together with positive delta C-13 and negative delta O-18 trends are indicative of higher rates of photosynthesis and improved water supply. Afterwards, a thinner active soil layer leads to reduced growth because tree physiological processes become limited by summer temperature and water availability. Revealing long-term effects of forest fires on active soil layer thickness, ground vegetation composition and tree growth, this study demonstrates the importance of complex vegetation-permafrost interactions that modify the trajectory of post-fire forest recovery across much of the circumpolar boreal zone. To further quantify the influence of boreal wildfires on large-scale carbon cycle dynamics, future work should consider a wide range of tree species from different habitats in the high-northern latitudes.
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Держатели документа:
Univ Cambridge, Dept Geog, Cambridge CB2 3EN, England.
RAS, VN Sukachev Inst Forest SB, Fed Res Ctr, Krasnoyarsk Sci Ctr SB, Akademgorodok 660036, Russia.
Siberian Fed Univ, Svobodnii 79, Krasnoyarsk 660041, Russia.
Swiss Fed Res Inst WSL, CH-8903 Birmensdorf, Switzerland.
State Nat Reserve Stolby, Krasnoyarsk 660006, Russia.
Masaryk Univ, Dept Geog, Fac Sci, Brno 61300, Czech Republic.
Czech Acad Sci CzechGlobe, Global Change Res Inst, Brno 60300, Czech Republic.
Доп.точки доступа:
Kirdyanov, Alexander, V; Saurer, Matthias; Siegwolf, Rolf; Knorre, Anastasia A.; Prokushkin, Anatoly S.; Churakova, O. V.; Fonti, Marina, V; Buntgen, U.; Churakova, Olga V; Fonti, Marina; Russian Science FoundationRussian Science Foundation (RSF) [RSF 18-14-00072]; Swiss National Science Foundation Joint Research Project SCOPES [IZ73ZO_128035/1]; [SNF 182092]
The biophysical climate mitigation potential of boreal peatlands during the growing season
/ M. Helbig, J. M. Waddington, P. Alekseychik [et al.] // Environ. Res. Lett. - 2020. - Vol. 15, Is. 10. - Ст. 104004, DOI 10.1088/1748-9326/abab34. - Cited References:109. - This work is part of the Boreal Water Futures project and supported through the Global Water Futures research program. We thank all the EC flux tower teams for sharing their data. We are grateful to Myroslava Khomik, Adam Green, Inke Forbrich, Eric Kessel, Gordon Drewitt, and Pasi Kolari for helping with data preparation and to Inke Forbrich on feedback on an earlier version of the manuscript.; I M acknowledges funding from ICOS-FINLAND (Grant 281255), Finnish Center of Excellence (Grant 307331), and EU Horizon-2020 RINGO project (Grant 730944). A P acknowledges funding through the research project #18-45-243003 (RFBR and Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science) and support for flux tower sites RU-ZOP and RU-ZOB through the Max Planck Society. A D and J T acknowledges funding from US National Science foundation #DEB-1440297 and DOE Ameriflux Network Management Project award to ChEAS core site cluster. T A B, A G B, and R J acknowledge support received through grants from the Fluxnet Canada ResearchNetwork (2002-2007; NSERC, CFCAS, and BIOCAP) and the Canadian Carbon Program (2008-2012; CFCAS) and by an NSERC (Climate Change and Atmospheric Research) Grant to the Changing Cold Regions Network (CCRN; 2012-2016) and an NSERC Discovery Grant. H I and M U acknowledge support by the Arctic Challenge for Sustainability II (ArCS II) project (JPMXD1420318865). J K and A V acknowledge funding by RFBR project number 19-04-01234-a. B A acknowledges funding through NASA, NSERC, BIOCAP Canada, the Canadian Foundation for Climate and Atmospheric Sciences, and the Canadian Foundation for Innovation for flux measurements at CA-MAN and through the Canadian Forest Service, the Natural Sciences and Engineering Research Council of Canada (NSERC), the FLUXNET-Canada Network (NSERC, the Canadian Foundation for Climate and Atmospheric Sciences (CFCAS), and BIOCAP Canada), the Canadian Carbon Program (CFCAS), Parks Canada, and the Program of Energy Research and Development (PERD). O S acknowledges funding by the Canada Research Chairs, Canada Foundation for Innovation Leaders Opportunity Fund, and Natural Sciences and Engineering Research Council Discovery Grant Programs. L B F acknowledges funding from the Natural Sciences and Engineering Research Council of Canada (NSERC), the FLUXNET-Canada Network (NSERC, the Canadian Foundation for Climate and Atmospheric Sciences (CFCAS), and BIOCAP Canada), and the Canadian Carbon Program (CFCAS). M B N, M O L, M P, and J C gratefully acknowledge funding from the Swedish research infrastructures SITES and ICOS Sweden and research grants from Kempe Foundations, (#SMK-1743); VR (#2018-03966) and Formas, (#2016-01289) and M P gratefully acknowledges funding from Knut and Alice Wallenberg Foundation (#2015.0047).; M W acknowledge funding by the German Research Foundation (Grant Wi 2680/2-1) and the European Union (Grant 36993). B R K R and L K acknowledge support by the Cluster of Excellence 'CliSAP' (EXC177) of the University of Hamburg, funded by the German Research Foundation. H I acknowledges JAMSTEC and IARC/UAF collaboration study (JICS) and Arctic Challenge for Sustainability Project (ArCS). E H acknowledges the support of the FLUXNET-Canada Network, the Canadian Carbon Program, and Ontario Ministry of the Environment, Conservation and Parks. E L acknowledges funding by RFBR and Government of the KhantyMansi Autonomous Okrug -Yugra project #18-44-860017 and grant of the Yugra State University (13-01-20/39). M G and P T acknowledge NSERC funding (RDCPJ514218). M A, M K, A L. and J P T acknowledge the support by the Ministry of Transport and Communication through ICOS-Finland, Academy of Finland (grants 296888 and 308511), and Maj and Tor Nessling Foundation. T M acknowledge funding by Yakutian Scientific Center of Siberian Branch of Russian Academy of Sciences (Grant FWRS-2020-0012).
. - ISSN 1748-9326
РУБ Environmental Sciences + Meteorology & Atmospheric Sciences
Аннотация: Peatlands and forests cover large areas of the boreal biome and are critical for global climate regulation. They also regulate regional climate through heat and water vapour exchange with the atmosphere. Understanding how land-atmosphere interactions in peatlands differ from forests may therefore be crucial for modelling boreal climate system dynamics and for assessing climate benefits of peatland conservation and restoration. To assess the biophysical impacts of peatlands and forests on peak growing season air temperature and humidity, we analysed surface energy fluxes and albedo from 35 peatlands and 37 evergreen needleleaf forests-the dominant boreal forest type-and simulated air temperature and vapour pressure deficit (VPD) over hypothetical homogeneous peatland and forest landscapes. We ran an evapotranspiration model using land surface parameters derived from energy flux observations and coupled an analytical solution for the surface energy balance to an atmospheric boundary layer (ABL) model. We found that peatlands, compared to forests, are characterized by higher growing season albedo, lower aerodynamic conductance, and higher surface conductance for an equivalent VPD. This combination of peatland surface properties results in a similar to 20% decrease in afternoon ABL height, a cooling (from 1.7 to 2.5 degrees C) in afternoon air temperatures, and a decrease in afternoon VPD (from 0.4 to 0.7 kPa) for peatland landscapes compared to forest landscapes. These biophysical climate impacts of peatlands are most pronounced at lower latitudes (similar to 45 degrees N) and decrease toward the northern limit of the boreal biome (similar to 70 degrees N). Thus, boreal peatlands have the potential to mitigate the effect of regional climate warming during the growing season. The biophysical climate mitigation potential of peatlands needs to be accounted for when projecting the future climate of the boreal biome, when assessing the climate benefits of conserving pristine boreal peatlands, and when restoring peatlands that have experienced peatland drainage and mining.
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Держатели документа:
McMaster Univ, Sch Earth Environm & Soc, Hamilton, ON, Canada.
Dalhousie Univ, Dept Phys & Atmospher Sci, Halifax, NS, Canada.
Univ Helsinki, Inst Atmospher & Earth Syst Res Phys, Fac Sci, Helsinki, Finland.
Nat Resources Inst Finland LUKE, Bioecon & Environm, Helsinki, Finland.
Univ Manitoba, Dept Soil Sci, Winnipeg, MB, Canada.
Finnish Meteorol Inst, Helsinki, Finland.
Environm & Climate Change Canada, Climate Res Div, Saskatoon, SK, Canada.
Univ Saskatchewan, Global Inst Water Secur, Saskatoon, SK, Canada.
Univ British Columbia, Fac Land & Food Syst, Vancouver, BC, Canada.
Michigan State Univ, Dept Geog Environm & Spatial Sci, E Lansing, MI 48824 USA.
Swedish Univ Agr Sci, Dept Forest Ecol & Management, Umea, Sweden.
Univ Wisconsin, Dept Atmospher Sci & Ocean Sci, Madison, WI USA.
Worcester State Univ, Dept Earth Environm & Phys, Worcester, MA USA.
Univ Alaska, Inst Arctic Biol, Fairbanks, AK 99775 USA.
Univ Lethbridge, Dept Biol Sci, Lethbridge, AB, Canada.
Univ Copenhagen, Dept Geosci & Nat Resource Management, Copenhagen, Denmark.
Univ Quebec Montreal Geotop, Montreal, PQ, Canada.
Swedish Univ Agr Sci, Dept Ecol, Uppsala, Sweden.
McGill Univ, Dept Geog, Montreal, PQ, Canada.
Lund Univ, Ctr Environm & Climate Res, Lund, Sweden.
Carleton Univ, Dept Geog & Environm Studies, Ottawa, ON, Canada.
Natl Agr & Food Res Org, Inst Agroenvironm Sci, Tsukuba, Ibaraki, Japan.
Univ Laval, Dept Genie Civil & Genie Eaux, Quebec City, PQ, Canada.
Shinshu Univ, Dept Environm Sci, Fac Sci, Matsumoto, Nagano, Japan.
Russian Acad Sci, AN Severtsov Inst Ecol & Evolut, Moscow, Russia.
Univ Hamburg, Inst Soil Sci, Hamburg, Germany.
Yugra State Univ, Ctr Environm Dynam & Climate Changes, Khanty Mansiysk, Russia.
Lund Univ, Dept Phys Geog & Ecosyst Sci, Lund, Sweden.
Wilfrid Laurier Univ, Cold Reg Res Ctr, Waterloo, ON, Canada.
Russian Acad Sci, Inst Biol Problems Cryolithozone, Siberian Branch, Yakutsk, Russia.
Nagoya Univ, Grad Sch Bioagr Sci, Nagoya, Aichi, Japan.
Univ Waterloo, Dept Geog & Environm Management, Waterloo, ON, Canada.
Russian Acad Sci, Siberian Branch, VN Sukachev Inst, Krasnoyarsk, Russia.
Univ Arkansas, Dept Biol & Agr Engn, Fayetteville, AR 72701 USA.
Univ Montreal, Dept Geog, Montreal, PQ, Canada.
Univ Montreal, Ctr Etud Nord, Montreal, PQ, Canada.
McGill Univ, Dept Nat Resource Sci, Ste Anne De Bellevue, PQ, Canada.
Univ Eastern Finland, Sch Forest Sci, Joensuu, Finland.
Osaka Prefecture Univ, Grad Sch Life & Environm Sci, Sakai, Osaka, Japan.
Univ Helsinki, Inst Atmospher & Earth Syst Res Forest Sci, Fac Agr & Forestry, Helsinki, Finland.
Ernst Moritz Arndt Univ Greifswald, Inst Bot & Landscape Ecol, Greifswald, Germany.
Univ Alberta, Dept Renewable Resources, Edmonton, AB, Canada.
Доп.точки доступа:
Helbig, Manuel; Waddington, James M.; Alekseychik, Pavel; Amiro, Brian; Aurela, Mika; Barr, Alan G.; Black, T. Andrew; Carey, Sean K.; Chen, Jiquan; Chi, Jinshu; Desai, Ankur R.; Dunn, Allison; Euskirchen, Eugenie S.; Flanagan, Lawrence B.; Friborg, Thomas; Garneau, Michelle; Grelle, Achim; Harder, Silvie; Heliasz, Michal; Humphreys, Elyn R.; Ikawa, Hiroki; Isabelle, Pierre-Erik; Iwata, Hiroki; Jassal, Rachhpal; Korkiakoski, Mika; Kurbatova, Juliya; Kutzbach, Lars; Lapshina, Elena; Lindroth, Anders; Lofvenius, Mikaell Ottosson; Lohila, Annalea; Mammarella, Ivan; Marsh, Philip; Moore, Paul A.; Maximov, Trofim; Nadeau, Daniel F.; Nicholls, Erin M.; Nilsson, Mats B.; Ohta, Takeshi; Peichl, Matthias; Petrone, Richard M.; Prokushkin, Anatoly; Quinton, William L.; Roulet, Nigel; Runkle, Benjamin R. K.; Sonnentag, Oliver; Strachan, Ian B.; Taillardat, Pierre; Tuittila, Eeva-Stiina; Tuovinen, Juha-Pekka; Turner, Jessica; Ueyama, Masahito; Varlagin, Andrej; Vesala, Timo; Wilmking, Martin; Zyrianov, Vyacheslav; Schulze, Christopher; ICOS-FINLAND [281255]; Finnish Center of Excellence [307331]; EU Horizon-2020 RINGO project [730944]; Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science [18-45-243003]; RFBRRussian Foundation for Basic Research (RFBR) [18-45-243003, 19-04-01234-a]; Max Planck SocietyMax Planck SocietyFoundation CELLEX; US National Science foundationNational Science Foundation (NSF) [DEB-1440297]; DOE Ameriflux Network Management ProjectUnited States Department of Energy (DOE); Fluxnet Canada ResearchNetwork (2002-2007; NSERC); Fluxnet Canada ResearchNetwork (2002-2007; CFCAS); Fluxnet Canada ResearchNetwork (2002-2007; BIOCAP); Canadian Carbon Program (2008-2012; CFCAS); NSERC (Climate Change and Atmospheric Research); NSERC Discovery GrantNatural Sciences and Engineering Research Council of Canada; Arctic Challenge for Sustainability II (ArCS II) project [JPMXD1420318865]; NASANational Aeronautics & Space Administration (NASA); BIOCAP Canada; Canadian Foundation for Climate and Atmospheric Sciences; Natural Sciences and Engineering Research Council of Canada (NSERC)Natural Sciences and Engineering Research Council of Canada; FLUXNET-Canada Network (NSERC); FLUXNET-Canada Network (Canadian Foundation for Climate and Atmospheric Sciences (CFCAS)); FLUXNET-Canada Network (BIOCAP Canada); Parks Canada; Program of Energy Research and Development (PERD)Natural Resources Canada; Canada Research ChairsCanada Research ChairsCGIAR; Natural Sciences and Engineering Research CouncilNatural Sciences and Engineering Research Council of Canada; Canadian Carbon Program (CFCAS); Canada Foundation for Innovation Leaders Opportunity FundCanada Foundation for Innovation; Kempe Foundations [SMK-1743]; VRSwedish Research Council [2018-03966]; FormasSwedish Research Council Formas [2016-01289]; Knut and Alice Wallenberg FoundationKnut & Alice Wallenberg Foundation [2015.0047]; German Research FoundationGerman Research Foundation (DFG) [Wi 2680/2-1]; European UnionEuropean Union (EU) [36993]; Cluster of Excellence 'CliSAP' of the University of Hamburg - German Research Foundation [EXC177]; FLUXNET-Canada Network; Canadian Carbon Program; Ontario Ministry of the Environment, Conservation and Parks; Yugra State University [13-01-20/39]; NSERCNatural Sciences and Engineering Research Council of Canada [RDCPJ514218]; Ministry of Transport and Communication through ICOS-Finland; Academy of FinlandAcademy of Finland [296888, 308511]; Maj and Tor Nessling Foundation; Yakutian Scientific Center of Siberian Branch of Russian Academy of Sciences [FWRS-2020-0012]; RFBRRussian Foundation for Basic Research (RFBR); Government of the KhantyMansi Autonomous Okrug -Yugra project [18-44-860017]; Swedish research infrastructure SITES Sweden; Swedish research infrastructure ICOS Sweden; Global Water Futures research program; NSERCNatural Sciences and Engineering Research Council of Canada; Canadian Foundation for InnovationCanada Foundation for Innovation; Canadian Forest ServiceNatural Resources CanadaCanadian Forest Service
Рубрики:
LAND-COVER CHANGE
SURFACE CONDUCTANCE
STOMATAL CONDUCTANCE
PERMAFROST
Кл.слова (ненормированные):
peatlands -- boreal forest -- climate mitigation -- regional climate -- energy -- balance
LAND-COVER CHANGE
SURFACE CONDUCTANCE
STOMATAL CONDUCTANCE
PERMAFROST
Кл.слова (ненормированные):
peatlands -- boreal forest -- climate mitigation -- regional climate -- energy -- balance
Аннотация: Peatlands and forests cover large areas of the boreal biome and are critical for global climate regulation. They also regulate regional climate through heat and water vapour exchange with the atmosphere. Understanding how land-atmosphere interactions in peatlands differ from forests may therefore be crucial for modelling boreal climate system dynamics and for assessing climate benefits of peatland conservation and restoration. To assess the biophysical impacts of peatlands and forests on peak growing season air temperature and humidity, we analysed surface energy fluxes and albedo from 35 peatlands and 37 evergreen needleleaf forests-the dominant boreal forest type-and simulated air temperature and vapour pressure deficit (VPD) over hypothetical homogeneous peatland and forest landscapes. We ran an evapotranspiration model using land surface parameters derived from energy flux observations and coupled an analytical solution for the surface energy balance to an atmospheric boundary layer (ABL) model. We found that peatlands, compared to forests, are characterized by higher growing season albedo, lower aerodynamic conductance, and higher surface conductance for an equivalent VPD. This combination of peatland surface properties results in a similar to 20% decrease in afternoon ABL height, a cooling (from 1.7 to 2.5 degrees C) in afternoon air temperatures, and a decrease in afternoon VPD (from 0.4 to 0.7 kPa) for peatland landscapes compared to forest landscapes. These biophysical climate impacts of peatlands are most pronounced at lower latitudes (similar to 45 degrees N) and decrease toward the northern limit of the boreal biome (similar to 70 degrees N). Thus, boreal peatlands have the potential to mitigate the effect of regional climate warming during the growing season. The biophysical climate mitigation potential of peatlands needs to be accounted for when projecting the future climate of the boreal biome, when assessing the climate benefits of conserving pristine boreal peatlands, and when restoring peatlands that have experienced peatland drainage and mining.
WOS
Держатели документа:
McMaster Univ, Sch Earth Environm & Soc, Hamilton, ON, Canada.
Dalhousie Univ, Dept Phys & Atmospher Sci, Halifax, NS, Canada.
Univ Helsinki, Inst Atmospher & Earth Syst Res Phys, Fac Sci, Helsinki, Finland.
Nat Resources Inst Finland LUKE, Bioecon & Environm, Helsinki, Finland.
Univ Manitoba, Dept Soil Sci, Winnipeg, MB, Canada.
Finnish Meteorol Inst, Helsinki, Finland.
Environm & Climate Change Canada, Climate Res Div, Saskatoon, SK, Canada.
Univ Saskatchewan, Global Inst Water Secur, Saskatoon, SK, Canada.
Univ British Columbia, Fac Land & Food Syst, Vancouver, BC, Canada.
Michigan State Univ, Dept Geog Environm & Spatial Sci, E Lansing, MI 48824 USA.
Swedish Univ Agr Sci, Dept Forest Ecol & Management, Umea, Sweden.
Univ Wisconsin, Dept Atmospher Sci & Ocean Sci, Madison, WI USA.
Worcester State Univ, Dept Earth Environm & Phys, Worcester, MA USA.
Univ Alaska, Inst Arctic Biol, Fairbanks, AK 99775 USA.
Univ Lethbridge, Dept Biol Sci, Lethbridge, AB, Canada.
Univ Copenhagen, Dept Geosci & Nat Resource Management, Copenhagen, Denmark.
Univ Quebec Montreal Geotop, Montreal, PQ, Canada.
Swedish Univ Agr Sci, Dept Ecol, Uppsala, Sweden.
McGill Univ, Dept Geog, Montreal, PQ, Canada.
Lund Univ, Ctr Environm & Climate Res, Lund, Sweden.
Carleton Univ, Dept Geog & Environm Studies, Ottawa, ON, Canada.
Natl Agr & Food Res Org, Inst Agroenvironm Sci, Tsukuba, Ibaraki, Japan.
Univ Laval, Dept Genie Civil & Genie Eaux, Quebec City, PQ, Canada.
Shinshu Univ, Dept Environm Sci, Fac Sci, Matsumoto, Nagano, Japan.
Russian Acad Sci, AN Severtsov Inst Ecol & Evolut, Moscow, Russia.
Univ Hamburg, Inst Soil Sci, Hamburg, Germany.
Yugra State Univ, Ctr Environm Dynam & Climate Changes, Khanty Mansiysk, Russia.
Lund Univ, Dept Phys Geog & Ecosyst Sci, Lund, Sweden.
Wilfrid Laurier Univ, Cold Reg Res Ctr, Waterloo, ON, Canada.
Russian Acad Sci, Inst Biol Problems Cryolithozone, Siberian Branch, Yakutsk, Russia.
Nagoya Univ, Grad Sch Bioagr Sci, Nagoya, Aichi, Japan.
Univ Waterloo, Dept Geog & Environm Management, Waterloo, ON, Canada.
Russian Acad Sci, Siberian Branch, VN Sukachev Inst, Krasnoyarsk, Russia.
Univ Arkansas, Dept Biol & Agr Engn, Fayetteville, AR 72701 USA.
Univ Montreal, Dept Geog, Montreal, PQ, Canada.
Univ Montreal, Ctr Etud Nord, Montreal, PQ, Canada.
McGill Univ, Dept Nat Resource Sci, Ste Anne De Bellevue, PQ, Canada.
Univ Eastern Finland, Sch Forest Sci, Joensuu, Finland.
Osaka Prefecture Univ, Grad Sch Life & Environm Sci, Sakai, Osaka, Japan.
Univ Helsinki, Inst Atmospher & Earth Syst Res Forest Sci, Fac Agr & Forestry, Helsinki, Finland.
Ernst Moritz Arndt Univ Greifswald, Inst Bot & Landscape Ecol, Greifswald, Germany.
Univ Alberta, Dept Renewable Resources, Edmonton, AB, Canada.
Доп.точки доступа:
Helbig, Manuel; Waddington, James M.; Alekseychik, Pavel; Amiro, Brian; Aurela, Mika; Barr, Alan G.; Black, T. Andrew; Carey, Sean K.; Chen, Jiquan; Chi, Jinshu; Desai, Ankur R.; Dunn, Allison; Euskirchen, Eugenie S.; Flanagan, Lawrence B.; Friborg, Thomas; Garneau, Michelle; Grelle, Achim; Harder, Silvie; Heliasz, Michal; Humphreys, Elyn R.; Ikawa, Hiroki; Isabelle, Pierre-Erik; Iwata, Hiroki; Jassal, Rachhpal; Korkiakoski, Mika; Kurbatova, Juliya; Kutzbach, Lars; Lapshina, Elena; Lindroth, Anders; Lofvenius, Mikaell Ottosson; Lohila, Annalea; Mammarella, Ivan; Marsh, Philip; Moore, Paul A.; Maximov, Trofim; Nadeau, Daniel F.; Nicholls, Erin M.; Nilsson, Mats B.; Ohta, Takeshi; Peichl, Matthias; Petrone, Richard M.; Prokushkin, Anatoly; Quinton, William L.; Roulet, Nigel; Runkle, Benjamin R. K.; Sonnentag, Oliver; Strachan, Ian B.; Taillardat, Pierre; Tuittila, Eeva-Stiina; Tuovinen, Juha-Pekka; Turner, Jessica; Ueyama, Masahito; Varlagin, Andrej; Vesala, Timo; Wilmking, Martin; Zyrianov, Vyacheslav; Schulze, Christopher; ICOS-FINLAND [281255]; Finnish Center of Excellence [307331]; EU Horizon-2020 RINGO project [730944]; Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science [18-45-243003]; RFBRRussian Foundation for Basic Research (RFBR) [18-45-243003, 19-04-01234-a]; Max Planck SocietyMax Planck SocietyFoundation CELLEX; US National Science foundationNational Science Foundation (NSF) [DEB-1440297]; DOE Ameriflux Network Management ProjectUnited States Department of Energy (DOE); Fluxnet Canada ResearchNetwork (2002-2007; NSERC); Fluxnet Canada ResearchNetwork (2002-2007; CFCAS); Fluxnet Canada ResearchNetwork (2002-2007; BIOCAP); Canadian Carbon Program (2008-2012; CFCAS); NSERC (Climate Change and Atmospheric Research); NSERC Discovery GrantNatural Sciences and Engineering Research Council of Canada; Arctic Challenge for Sustainability II (ArCS II) project [JPMXD1420318865]; NASANational Aeronautics & Space Administration (NASA); BIOCAP Canada; Canadian Foundation for Climate and Atmospheric Sciences; Natural Sciences and Engineering Research Council of Canada (NSERC)Natural Sciences and Engineering Research Council of Canada; FLUXNET-Canada Network (NSERC); FLUXNET-Canada Network (Canadian Foundation for Climate and Atmospheric Sciences (CFCAS)); FLUXNET-Canada Network (BIOCAP Canada); Parks Canada; Program of Energy Research and Development (PERD)Natural Resources Canada; Canada Research ChairsCanada Research ChairsCGIAR; Natural Sciences and Engineering Research CouncilNatural Sciences and Engineering Research Council of Canada; Canadian Carbon Program (CFCAS); Canada Foundation for Innovation Leaders Opportunity FundCanada Foundation for Innovation; Kempe Foundations [SMK-1743]; VRSwedish Research Council [2018-03966]; FormasSwedish Research Council Formas [2016-01289]; Knut and Alice Wallenberg FoundationKnut & Alice Wallenberg Foundation [2015.0047]; German Research FoundationGerman Research Foundation (DFG) [Wi 2680/2-1]; European UnionEuropean Union (EU) [36993]; Cluster of Excellence 'CliSAP' of the University of Hamburg - German Research Foundation [EXC177]; FLUXNET-Canada Network; Canadian Carbon Program; Ontario Ministry of the Environment, Conservation and Parks; Yugra State University [13-01-20/39]; NSERCNatural Sciences and Engineering Research Council of Canada [RDCPJ514218]; Ministry of Transport and Communication through ICOS-Finland; Academy of FinlandAcademy of Finland [296888, 308511]; Maj and Tor Nessling Foundation; Yakutian Scientific Center of Siberian Branch of Russian Academy of Sciences [FWRS-2020-0012]; RFBRRussian Foundation for Basic Research (RFBR); Government of the KhantyMansi Autonomous Okrug -Yugra project [18-44-860017]; Swedish research infrastructure SITES Sweden; Swedish research infrastructure ICOS Sweden; Global Water Futures research program; NSERCNatural Sciences and Engineering Research Council of Canada; Canadian Foundation for InnovationCanada Foundation for Innovation; Canadian Forest ServiceNatural Resources CanadaCanadian Forest Service
Winter CO2 Fluxes in Ecosystems of Central Siberia: Comparative Estimates Using Three Different Approaches
/ A. V. Panov, A. S. Prokushkin, G. K. Zrazhevskaya [et al.] // Russ. J. Ecol. - 2021. - Vol. 52, Is. 2. - P126-135, DOI 10.1134/S1067413621020090
. - ISSN 1067-4136
Кл.слова (ненормированные):
carbon dioxide -- Central Siberia -- closed dynamic chambers -- eddy covariance -- gas molecular diffusion -- winter soil respiration -- abundance estimation -- bog -- carbon dioxide -- carbon fixation -- carbon flux -- coniferous forest -- estimation method -- snowpack -- soil carbon -- soil ecosystem -- soil surface -- winter -- Siberia -- Coniferophyta
Аннотация: Abstract—: Winter CO2 fluxes in Central Siberian ecosystems have been measured using different methodological approaches: dynamic chamber measurements at the soil surface under snowpack (Fsoil) and at the upper snowpack surface (Fsnow), static estimates based on measured CO2 concentrations and conductance properties of the snowpack (Fdiff), and calculations of CO2 efflux rates based on the eddy covariance technique (Fec). The results of measurements are analyzed and discussed with respect to the significance of differences between them and the applicability and limitations of the corresponding methods. The data are presented on winter CO2 efflux rates in five major ecosystem types of Central Siberia: lichen pine forest, lichen–moss pine forest, mixed forest, dark conifer forest, and raised pine bog. © 2021, Pleiades Publishing, Ltd.
Scopus
Держатели документа:
Sukachev Institute of Forest, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Max Planck Institute for Biogeochemistry, Jena, 07745, Germany
Institute for Atmospheric and Earth System Research, University of Helsinki, Helsinki, 00560, Finland
Доп.точки доступа:
Panov, A. V.; Prokushkin, A. S.; Zrazhevskaya, G. K.; Urban, A. B.; Zyryanov, V. I.; Sidenko, N. V.; Heimann, M.
Кл.слова (ненормированные):
carbon dioxide -- Central Siberia -- closed dynamic chambers -- eddy covariance -- gas molecular diffusion -- winter soil respiration -- abundance estimation -- bog -- carbon dioxide -- carbon fixation -- carbon flux -- coniferous forest -- estimation method -- snowpack -- soil carbon -- soil ecosystem -- soil surface -- winter -- Siberia -- Coniferophyta
Аннотация: Abstract—: Winter CO2 fluxes in Central Siberian ecosystems have been measured using different methodological approaches: dynamic chamber measurements at the soil surface under snowpack (Fsoil) and at the upper snowpack surface (Fsnow), static estimates based on measured CO2 concentrations and conductance properties of the snowpack (Fdiff), and calculations of CO2 efflux rates based on the eddy covariance technique (Fec). The results of measurements are analyzed and discussed with respect to the significance of differences between them and the applicability and limitations of the corresponding methods. The data are presented on winter CO2 efflux rates in five major ecosystem types of Central Siberia: lichen pine forest, lichen–moss pine forest, mixed forest, dark conifer forest, and raised pine bog. © 2021, Pleiades Publishing, Ltd.
Scopus
Держатели документа:
Sukachev Institute of Forest, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Max Planck Institute for Biogeochemistry, Jena, 07745, Germany
Institute for Atmospheric and Earth System Research, University of Helsinki, Helsinki, 00560, Finland
Доп.точки доступа:
Panov, A. V.; Prokushkin, A. S.; Zrazhevskaya, G. K.; Urban, A. B.; Zyryanov, V. I.; Sidenko, N. V.; Heimann, M.
Winter CO2 Fluxes in Ecosystems of Central Siberia: Comparative Estimates Using Three Different Approaches
/ A. V. Panov, A. S. Prokushkin, G. K. Zrazhevskaya [et al.] // Russ. J. Ecol. - 2021. - Vol. 52, Is. 2. - P126-135, DOI 10.1134/S1067413621020090. - Cited References:47. - This study was supported by the Government of Krasnoyarsk krai and Krasnoyarsk Regional Science Foundation under the research project no. 18-45-243003 "Respiration of Siberian forests: Regional analysis of atmospheric carbon sinks and sources in ecosystems of key bioclimatic zones in the Yenisei River basin"; Russian Foundation for Basic Research (project nos. 18-05-00235., 18-05-60203 Arctic), and Max Planck Society (Germany).
. - ISSN 1067-4136. - ISSN 1608-3334
РУБ Ecology
Кл.слова (ненормированные):
carbon dioxide -- winter soil respiration -- closed dynamic chambers -- gas -- molecular diffusion -- eddy covariance -- Central Siberia
Аннотация: Winter CO2 fluxes in Central Siberian ecosystems have been measured using different methodological approaches: dynamic chamber measurements at the soil surface under snowpack (F-soil) and at the upper snowpack surface (F-snow), static estimates based on measured CO2 concentrations and conductance properties of the snowpack (F-diff), and calculations of CO2 efflux rates based on the eddy covariance technique (F-ec). The results of measurements are analyzed and discussed with respect to the significance of differences between them and the applicability and limitations of the corresponding methods. The data are presented on winter CO2 efflux rates in five major ecosystem types of Central Siberia: lichen pine forest, lichen- moss pine forest, mixed forest, dark conifer forest, and raised pine bog.
WOS
Держатели документа:
Russian Acad Sci, Sukachev Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia.
Max Planck Inst Biogeochem, D-07745 Jena, Germany.
Univ Helsinki, Inst Atmospher & Earth Syst Res, Helsinki 00560, Finland.
Доп.точки доступа:
Panov, A., V; Prokushkin, A. S.; Zrazhevskaya, G. K.; Urban, A. B.; Zyryanov, V., I; Sidenko, N., V; Heimann, M.; Government of Krasnoyarsk krai; Krasnoyarsk Regional Science Foundation [18-45-243003]; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [18-05-00235 A, 18-05-60203]; Max Planck Society (Germany)Max Planck Society
Кл.слова (ненормированные):
carbon dioxide -- winter soil respiration -- closed dynamic chambers -- gas -- molecular diffusion -- eddy covariance -- Central Siberia
Аннотация: Winter CO2 fluxes in Central Siberian ecosystems have been measured using different methodological approaches: dynamic chamber measurements at the soil surface under snowpack (F-soil) and at the upper snowpack surface (F-snow), static estimates based on measured CO2 concentrations and conductance properties of the snowpack (F-diff), and calculations of CO2 efflux rates based on the eddy covariance technique (F-ec). The results of measurements are analyzed and discussed with respect to the significance of differences between them and the applicability and limitations of the corresponding methods. The data are presented on winter CO2 efflux rates in five major ecosystem types of Central Siberia: lichen pine forest, lichen- moss pine forest, mixed forest, dark conifer forest, and raised pine bog.
WOS
Держатели документа:
Russian Acad Sci, Sukachev Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia.
Max Planck Inst Biogeochem, D-07745 Jena, Germany.
Univ Helsinki, Inst Atmospher & Earth Syst Res, Helsinki 00560, Finland.
Доп.точки доступа:
Panov, A., V; Prokushkin, A. S.; Zrazhevskaya, G. K.; Urban, A. B.; Zyryanov, V., I; Sidenko, N., V; Heimann, M.; Government of Krasnoyarsk krai; Krasnoyarsk Regional Science Foundation [18-45-243003]; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [18-05-00235 A, 18-05-60203]; Max Planck Society (Germany)Max Planck Society