Труды сотрудников ИЛ им. В.Н. Сукачева СО РАН

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Найдено документов в текущей БД: 21

    Reassessing the evidence for tree-growth and inferred temperature change during the Common Era in Yamalia, northwest Siberia
/ K. R. Briffa [et al.] // Quat. Sci. Rev. - 2013. - Vol. 72. - P83-107, DOI 10.1016/j.quascirev.2013.04.008. - Cited References: 70. - KRB, TMM and TJO acknowledge support from NERC (NE/G018863/1). RMH, AVK, VSM and SGS acknowledge support from the partnership project of the Ural and Siberian Branches of the Russian Academy of Sciences (No 12-C-4-1038 and No 69). SGS, VSM and RMH acknowledge support from the Russian Foundation for Basic Research (No 11-04-00623-a, No 13-04-00961-a and No 13-04-02058). . - 25. - ISSN 0277-3791
РУБ Geography, Physical + Geosciences, Multidisciplinary

Аннотация: The development of research into the history of tree growth and inferred summer temperature changes in Yamaha spanning the last 2000 years is reviewed. One focus is the evolving production of tree-ring width (TRW) and tree-ring maximum-latewood density (MXD) larch (Larix sibirica) chronologies, incorporating different applications of Regional Curve Standardisation (RCS). Another focus is the comparison of independent data representing past tree growth in adjacent Yamaha areas: Yamal and Polar Urals, and the examination of the evidence for common growth behaviour at different timescales. The sample data we use are far more numerous and cover a longer time-span at Yamal compared to the Polar Urals, but Yamal has only TRW, while there are both TRW and MXD for the Polar Urals. We use more data (sub-fossil and from living trees) than in previous dendroclimatic studies in this region. We develop a new TRW chronology for Yamal, more than 2000 years long and running up to 2005. For the Polar Urals we develop new TRW and MXD chronologies that show good agreement at short (<15 years) and medium (15-100 years) timescales demonstrating the validity of attempts to reconcile the evidence of longer-timescale information that they provide. We use a "conservative" application of the RCS approach (two-curve signal-free RCS), guarding against the possibility of "modern sample bias": a possible inflation of recent chronology values arising out of inadvertent selection of mostly relatively fast-growing trees in recent centuries. We also transform tree indices to have a normal distribution to remove the positive chronology skew often apparent in RCS TRW chronologies. This also reduces the apparent magnitude of 20th century tree-growth levels. There is generally good agreement between all chronologies as regards the major features of the decadal to centennial variability. Low tree-growth periods for which the inferred summer temperatures are approximately 2.5 degrees C below the 1961-90 reference are apparent in the 15-year smoothed reconstructions, centred around 1005, 1300, 1455, 1530, particularly the 1810s where the inferred cooling reaches -4 degrees C or even -6 degrees C for individual years, and the 1880s. These are superimposed on generally cool pre-20th century conditions: the long-term means of the pre-1900 reconstructed temperature anomalies range from -0.6 to -0.9 degrees C in our alternative reconstructions. There are numerous periods of one or two decades with relatively high growth (and inferred summer temperatures close to the 1961-1990 level) but at longer timescales only the 40-year period centred at 250 CE appears comparable with 20th century warmth. Although the central temperature estimate for this period is below that for the recent period, when we take into account the uncertainties we cannot be highly confident that recent warmth has exceeded the temperature of this earlier warm period. While there are clear warm decades either side of 1000 CE, neither TRW nor MXD data support the conclusion that temperatures were exceptionally high during medieval times. One previous version of the Polar Urals TRW chronology is shown here to be in error due to an injudicious application of RCS to non-homogeneous sample data, partly derived from root-collar samples that produce spuriously high chronology values in the 11th and 15th centuries. This biased chronology has been used in a number of recent studies aimed at reconstructing wider scale temperature histories. All of the chronologies we have produced here clearly show a generally high level of growth throughout their most recent 80 years. Allowing for chronology and reconstruction uncertainty, the mean of the last 100 years of the reconstruction is likely warmer than any century in the last 2000 years in this region. (C) 2013 The Authors. Published by Elsevier Ltd. All rights reserved.

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Держатели документа:
[Briffa, Keith R.
Melvin, Thomas M.
Osborn, Timothy J.] Univ E Anglia, Sch Environm Sci, Climat Res Unit, Norwich NR4 7TJ, Norfolk, England
[Hantemirov, Rashit M.
Mazepa, Valeriy S.
Shiyatov, Stepan G.] Russian Acad Sci, Ural Branch, Inst Plant & Anim Ecol, Ekaterinburg 620144, Russia
[Kirdyanov, Alexander V.] Russian Acad Sci, Siberian Branch, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia
[Esper, Jan] Johannes Gutenberg Univ Mainz, Dept Geog, D-55099 Mainz, Germany
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок 50/28

Доп.точки доступа:
Briffa, K.R.; Melvin, T.M.; Osborn, T.J.; Hantemirov, R.M.; Kirdyanov, A.V.; Mazepa, V.S.; Shiyatov, S.G.; Esper, J...

    Tree-ring growth of Gmelin larch under contrasting local conditions in the north of Central Siberia
/ A. V. Kirdyanov, A. S. Prokushkin, M. A. Tabakova // Dendrochronologia. - 2013. - Vol. 31, Is. 2. - P114-119, DOI 10.1016/j.dendro.2012.10.003. - Cited References: 54. - The study was financed by Russian Foundation for Basic Research (12-04-00542), Swiss NSF (SCOPES IZ73Z0_128035) and the Grant of the Government of RF for outstanding scientists No. 11.G34.31.0014 to Prof. E.-D.Schulze. Work of TMA was also supported by the Grant of the President of RF for Young Scientists (MK-5498.2012.4). . - 6. - ISSN 1125-7865
РУБ Plant Sciences + Forestry

Аннотация: While the forest-tundra zone in Siberia, Russia has been dendroclimatologically well-studied in recent decades, much less emphasis has been given to a wide belt of northern taiga larch forests located to the south. In this study, climate and local site conditions are explored to trace their influence on radial growth of Gmelin larch (Larix gmelinii (Rupr.) Rupr.) trees developed on permafrost soils in the northern taiga. Three dendrochronological sites characterized by great differences in thermo-hydrological regime of soils were established along a short (ca. 100 m long) transect: on a river bank (RB), at riparian zone of a stream (RZ) and on a terrace (TER). Comparative analysis of the rate and year-to-year dynamics of tree radial growth among sites revealed considerable difference in both raw and standardized tree-ring width (TRW) chronologies obtained for the RZ site, characterized by shallow soil active layer depth and saturated soils. Results of dendroclimatic analysis indicated that tree-ring growth at all the sites is mostly defined by climatic conditions of a previous year and precipitation has stronger effect on TRW chronologies in comparison to the air temperatures. Remarkably, a great difference in the climatic response of TRW chronologies has been obtained for trees growing within a very short distance from each other. The positive relation of tree-ring growth with precipitation, and negative to temperature was observed in the dry site RB. In contrary, precipitation negatively and temperature positively influenced tree radial growth of larch at the water saturated RZ. Thus, a complicate response of northern Siberian larch forest productivity to the possible climate changes is expected due to great mosaic of site conditions and variability of environmental factors controlling tree-ring growth at different sites. Our study demonstrates the new possibilities for the future dendroclimatic research in the region, as various climatic parameters can be reconstructed from tree-ring chronologies obtained for different sites. (c) 2013 Elsevier GmbH. All rights reserved.

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Держатели документа:
[Kirdyanov, Alexander V.
Prokushkin, Anatoly S.] SB RAS, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia
[Tabakova, Maria A.] Siberian Fed Univ, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Kirdyanov, A.V.; Prokushkin, A.S.; Tabakova, M.A.

    Spatial patterns of climatic changes in the Eurasian north reflected in Siberian larch tree-ring parameters and stable isotopes
[Text] / O. V. Sidorova [et al.] // Glob. Change Biol. - 2010. - Vol. 16, Is. 3. - P1003-1018, DOI 10.1111/j.1365-2486.2009.02008.x. - Cited References: 50. - This work was supported by Swiss National Science Foundation SNF_200021_121838/1, (PIOI2-119259/1), SCOPES program (No. IB73A0-111134), European Science Foundation BASIN-SIBAE (No. 596) and the grants of RFBR No. 09-05-98015-r_Sibir_a, RFBR No. 09-04-00803a, 07-04-00293-a. The authors thank Mary Gagen and Danny McCarroll from Swansea University, England for providing deltaSUP13/SUPC data from Laanila (Finland) and for their useful advises. This work was conducted in collaboration with the EU-funded Millennium project (017008). . - 16. - ISSN 1354-1013
РУБ Biodiversity Conservation + Ecology + Environmental Sciences

Аннотация: A spatial description of climatic changes along circumpolar regions is presented based on larch tree-ring width (TRW) index, latewood density (MXD), delta 13C, delta 18O of whole wood and cellulose chronologies from eastern Taimyr (TAY) and north-eastern Yakutia (YAK), Russia, for the period 1900-2006, in comparison with a delta 13C cellulose chronology from Finland (FIN) and a delta 18O ice core record from Greenland (GISP2). Correlation analysis showed a strong positive relationships between TRW, MXD, stable isotope chronologies and June, July air temperatures for TAY and YAK, while the precipitation signal was reflected differently in tree-ring parameters and stable isotope data for the studied sites. Negative correlations were found between July, August precipitation from TAY and stable isotopes and MXD, while May, July precipitations are reflected in MXD and stable isotopes for the YAK. No significant relationships were found between TRW and precipitation for TAY and YAK. The areas of significant correlations between July gridded temperatures and TRW, MXD and stable isotopes show widespread dimension from east to west for YAK and from north to south for TAY. The climate signal is stronger expressed in whole wood than in cellulose for both Siberian regions. The comparison analysis between delta 13C cellulose chronologies from FIN and TAY revealed a similar declining trend over recent decades, which could be explained by the physiological effect of the increasing atmospheric CO(2). TRW, MXD and delta 13C chronologies from TAY and YAK show a negative correlation with North Atlantic Oscillation index, while the delta 18O chronologies show positive correlations, confirming recent warming trend at high latitudes. The strong correlation between GISP2 and delta 18O of cellulose from YAK chronologies reflects the large-scale climatic signal connected by atmospheric circulation patterns expressed by precipitation.

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Держатели документа:
[Sidorova, Olga V.
Siegwolf, Rolf T. W.
Saurer, Matthias] Paul Scherrer Inst, CH-5232 Villigen, Switzerland
[Sidorova, Olga V.
Naurzbaev, Mukhtar M.
Shashkin, Alexander V.
Vaganov, Eugene A.] RAS, VN Sukachev Inst Forest SB, Krasnoyarsk 660036, Russia
[Vaganov, Eugene A.] Siberian Fed Univ, Krasnoyarsk 660049, Russia

Доп.точки доступа:
Sidorova, O.V.; Siegwolf, RTW; Saurer, M...; Naurzbaev, M.M.; Shashkin, A.V.; Vaganov, E.A.

    Climate signals in tree-ring width, density and delta C-13 from larches in Eastern Siberia (Russia)
[Text] / A. V. Kirdyanov [et al.] // Chem. Geol. - 2008. - Vol. 252, Is. 01.02.2013. - P31-41, DOI 10.1016/j.chemgeo.2008.01.023. - Cited References: 74 . - 11. - ISSN 0009-2541
РУБ Geochemistry & Geophysics

Аннотация: We present the first and longest (413 years) dataset on stable carbon isotope ratios in tree-ring cellulose (delta C-13), tree-ring width (TRW), and maximum latewood density (MXD) obtained from larch trees growing on permafrost under continental climate in the Suntar Khayata mountain ridge in Eastern Siberia (Russia). With this first study we calibrate tree-ring parameters against climate quantities, and based on these results assess the potential added value of MXD and especially of delta C-13 complementing TRW analysis for future climate reconstruction purposes. delta C-13 chronologies were corrected for human induced changes in atmospheric CO2 since AD 1800. Two different approaches were compared i) a correction referring merely to the decline in atmospheric delta C-13 (delta C-13(atm)) and ii) a correction additionally accounting for the increase in atmospheric partial pressure of CO2. delta C-13 chronologies are characterized by strong signal strength with only 4 trees representing the population signal at the site (mean inter-series correlation = 0.71 and EPS = 0.90). delta C-13 variation shows low similarity to TRW and MXD, while correlation between TRW and MXD is highly significant. Correlation analysis of tree-ring parameters with gridded instrumental data (Climate Research Unit, CRU TS 2.1) over the AD 1929-2000 calibration period demonstrates that TRW and MXD react as reported from other sites at cold and humid northern latitudes: precipitation plays no significant role, but strong dependencies on monthly mean, maximum and minimum temperatures, particularly of the current summer (June to August), are found (up to r=0.60, p<0.001). Combining instrumental data to a summer season mean (JJA) and TRW and MXD to a growth parameter mean (TRW+MXD), clearly shows the importance of the number of frost days and minimum temperatures during summer (r=0.67, p <0.001) to dominate tree growth and highlights the potential for climate reconstruction. Carbon isotope fixation in tree rings is obviously less controlled by temperature variables. In particular, the frost days and minimum temperature have a much smaller influence on delta C-13 than on tree growth. delta C-13 strongly reacts to current-year July precipitation (r=-0.44, p<0.05) and June-July maximum temperature (r=0.46, p<0.001). All significant (p<0.05) correlation coefficients are higher when using the corrected delta C-13 chronology considering an additional plant physiological response on increasing atmospheric CO2 concentration, than using the chronology corrected for delta C-13(atm) changes alone. Spatial distribution of correlations between tree-ring data and climate variables for Eastern Siberia indicates that the summer temperature regime in the studied region is mostly influenced by Arctic air masses, but precipitation in July seems to be brought out from the Pacific region. Both the combined TRW+MXD record and the (513 C record revealed a high reconstruction potential for summer temperature and precipitation, respectively, particularly on decadal and longer-term scales. (C) 2008 Elsevier B.V. All rights reserved.

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Держатели документа:
[Kirdyanov, Alexander V.] VN Sukachev Inst Forest SB RAS, Krasnoyarsk 660036, Russia
[Treydte, Kerstin S.] Swiss Fed Res Inst WSL, CH-8903 Birmensdorf, Switzerland
[Nikolaev, Anatolli] Melnikov Inst Permafrost SB RAS Yakutsk, Yakutsk, Russia
[Helle, Gerhard
Schleser, Gerhard H.] ICG V, Inst Chem & Dynam Geosphere, Res Ctr Juelich GmbH, Julich, Germany

Доп.точки доступа:
Kirdyanov, A.V.; Treydte, K.S.; Nikolaev, A...; Helle, G...; Schleser, G.H.

    Isotopic composition (delta(13)C, delta(18)O) in wood and cellulose of Siberian larch trees for early Medieval and recent periods
[Text] / O. V. Sidorova [et al.] // J. Geophys. Res.-Biogeosci. - 2008. - Vol. 113, Is. G2. - Ст. G02019, DOI 10.1029/2007JG000473. - Cited References: 63 . - 13. - ISSN 0148-0227
РУБ Environmental Sciences + Geosciences, Multidisciplinary

Аннотация: We related tree ring width (TRW) and isotopic composition (delta(13)C, delta(18)O) of wood and cellulose from four larch trees (Larix cajanderi Mayr.) to climate parameters. The material was sampled in northeastern Yakutia [70 degrees N-148 degrees E] for the recent (AD 1880-2004) and early Medieval (AD 900-1000) periods. During the recent period June, July, and August air temperatures were positively correlated with delta(13)C and delta(18)O of wood and cellulose, while July precipitation was negatively correlated. Furthermore, the vapor pressure deficit (VPD) of July and August was significantly correlated with delta(13)C of wood and cellulose, but VPD had almost no influence on delta(18)O. Comparative analyses between mean isotope values for the (AD 900-1000) and (AD 1880-2004) periods indicate similar ranges of climatic conditions, with the exception of the period AD 1950-2004. While isotopic ratios in cellulose are reliably related to climatic variables, during some periods those in whole wood showed even stronger relationships. Strong positive correlations between delta(18)O of cellulose and Greenland ice-core (GISP2) data were detected for the beginning of the Medieval period (r = 0.86; p 0.05), indicating the reliability of isotope signals in tree rings for large-scale reconstructions.

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Держатели документа:
[Sidorova, Olga V.
Naurzbaev, Mukhtar M.
Vaganov, Eugene A.] Akademgorodok, VN Sukachev Inst Forest SB RAS, Krasnoyarsk 660036, Russia
[Siegwolf, Rolf T. W.
Saurer, Matthias] Paul Scherrer Inst, CH-5232 Villigen, Switzerland
[Vaganov, Eugene A.] Siberian Fed Univ, Krasnoyarsk, Russia

Доп.точки доступа:
Sidorova, O.V.; Siegwolf, RTW; Saurer, M...; Naurzbaev, M.M.; Vaganov, E.A.

    Reconstruction of May-July precipitation in the north Helan Mountain, Inner Mongolia since AD 1726 from tree-ring late-wood widths
[Text] / Y. . Liu [et al.] // Chin. Sci. Bull. - 2004. - Vol. 49, Is. 4. - P405-409, DOI 10.1360/03wd0409. - Cited References: 16 . - 5. - ISSN 1001-6538
РУБ Multidisciplinary Sciences
Рубрики:
SERIES
   CHINA

Кл.слова (ненормированные):
Helan Mountain -- pinus tabulaeformis -- late-wood ring width -- precipitation reconstruction

Аннотация: By analyzing statistical characteristics of five tree-ring standard chronologies, early-wood ring width (EWW), late-wood ring width (LWW), total ring width (TRW), minimum early-wood density (MinD), maximum late-wood density (MaxD) and, their climatic response respectively, we reconstructed the May to July precipitation using late-wood ring width (LWW) over the north Helan Mountain since A.D. 1726. The explained variance is 42% (R-adj(2) = 41%, F = 31.46, p < 0.000001). After 11-a moving average, the explained variance reaches 82% (F = 156.9, p < 0.05). On the decadal scale, the rainfall reconstruction of the northern Helan Mountain displays a quite similar variation pattern with that of the April to early July precipitation in Baiyinaobao, east of Inner Mongolia for the last 150 years. It may reflect the intensity variation of the East Asia Summer Monsoon front to a certain extent. Spectrum analysis shows 11-a and 22-a periodicities in the May to July precipitation reconstruction at the north Helan Mountain.

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Держатели документа:
Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China
Russian Acad Sci, Sukachev Inst Forest, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Liu, Y...; Shi, J.F.; Shishov, V...; Vaganov, E...; Yang, Y.K.; Cai, Q.F.; Sun, J.Y.; Wang, L...; Djanseitov, I...

    Comparing forest measurements from tree rings and a space-based index of vegetation activity in Siberia
[Text] / A. G. Bunn [et al.] // Environ. Res. Lett. - 2013. - Vol. 8, Is. 3. - Ст. 35034, DOI 10.1088/1748-9326/8/3/035034. - Cited References: 36. - We thank the Northern Eurasian Earth Science Partnership Initiative for support via a grant from NASA-LCLUC-NEESPI (NNX09AK58G) to MKH and AGB and from NSF 0612341 and NSF 1044417 to AGB. VVS was supported by the Fulbright Scholar Program. Figure 1 was produced by Randal Bernhardt of the WWU Geography Department. . - 8. - ISSN 1748-9326
РУБ Environmental Sciences + Meteorology & Atmospheric Sciences

Аннотация: Different methods have been developed for measuring carbon stocks and fluxes in the northern high latitudes, ranging from intensively measured small plots to space-based methods that use reflectance data to drive production efficiency models. The field of dendroecology has used samples of tree growth from radial increments to quantify long-term variability in ecosystem productivity, but these have very limited spatial domains. Since the cambium material in tree cores is itself a product of photosynthesis in the canopy, it would be ideal to link these two approaches. We examine the associations between the normalized differenced vegetation index (NDVI) and tree growth using 19 pairs of tree-ring widths (TRW) and maximum latewood density (MXD) across much of Siberia. We find consistent correlations between NDVI and both measures of tree growth and no systematic difference between MXD and TRW. At the regional level we note strong correspondence between the first principal component of tree growth and NDVI for MXD and TRW in a temperature-limited bioregion, indicating that canopy reflectance and cambial production are broadly linked. Using a network of 21 TRW chronologies from south of Lake Baikal, we find a similarly strong regional correspondence with NDVI in a markedly drier region. We show that tree growth is dominated by variation at decadal and multidecadal time periods, which the satellite record is incapable of recording given its relatively short record.

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Держатели документа:
[Bunn, Andrew G.] Western Washington Univ, Dept Environm Sci, Huxley Coll, Bellingham, WA 98225 USA
[Hughes, Malcolm K.
Losleben, Mark] Univ Arizona, Tree Ring Res Lab, Tucson, AZ 85721 USA
[Kirdyanov, Alexander V.] VN Sukachev Inst Forest SB RAS, Krasnoyarsk, Russia
[Shishov, Vladimir V.
Vaganov, Eugene A.] Siberian Fed Univ, Krasnoyarsk, Russia
[Berner, Logan T.] Woods Hole Res Ctr, Falmouth, MA USA
[Oltchev, Alexander] RAS, Severtsov Inst Ecol & Evolut, Moscow 117901, Russia

Доп.точки доступа:
Bunn, A.G.; Hughes, M.K.; Kirdyanov, Alexander V.; Кирдянов, Александр Викторович; Losleben, M.; Shishov, V.V.; Berner, L.T.; Oltchev, A.; Vaganov, E.A.; Northern Eurasian Earth Science Partnership Initiative via NASA-LCLUC-NEESPI [NNX09AK58G]; NSF [0612341, 1044417]; Fulbright Scholar Program

    Climate signals in tree-ring width, density and δ13C from larches in Eastern Siberia (Russia)
/ A. V. Kirdyanov [et al.] // Chemical Geology. - 2008. - Vol. 252, Is. 1-2. - P31-41, DOI 10.1016/j.chemgeo.2008.01.023 . - ISSN 0009-2541
Аннотация: We present the first and longest (413 years) dataset on stable carbon isotope ratios in tree-ring cellulose (δ13C), tree-ring width (TRW), and maximum latewood density (MXD) obtained from larch trees growing on permafrost under continental climate in the Suntar Khayata mountain ridge in Eastern Siberia (Russia). With this first study we calibrate tree-ring parameters against climate quantities, and based on these results assess the potential added value of MXD and especially of δ13C complementing TRW analysis for future climate reconstruction purposes. δ13C chronologies were corrected for human induced changes in atmospheric CO2 since AD 1800. Two different approaches were compared i) a correction referring merely to the decline in atmospheric δ13C (δ13Catm) and ii) a correction additionally accounting for the increase in atmospheric partial pressure of CO2. δ13C chronologies are characterized by strong signal strength with only 4 trees representing the population signal at the site (mean inter-series correlation = 0.71 and EPS = 0.90). δ13C variation shows low similarity to TRW and MXD, while correlation between TRW and MXD is highly significant. Correlation analysis of tree-ring parameters with gridded instrumental data (Climate Research Unit, CRU TS 2.1) over the AD 1929-2000 calibration period demonstrates that TRW and MXD react as reported from other sites at cold and humid northern latitudes: precipitation plays no significant role, but strong dependencies on monthly mean, maximum and minimum temperatures, particularly of the current summer (June to August), are found (up to r = 0.60, p < 0.001). Combining instrumental data to a summer season mean (JJA) and TRW and MXD to a growth parameter mean (TRW + MXD), clearly shows the importance of the number of frost days and minimum temperatures during summer (r = 0.67, p < 0.001) to dominate tree growth and highlights the potential for climate reconstruction. Carbon isotope fixation in tree rings is obviously less controlled by temperature variables. In particular, the frost days and minimum temperature have a much smaller influence on δ13C than on tree growth. δ13C strongly reacts to current-year July precipitation (r = - 0.44, p < 0.05) and June-July maximum temperature (r = 0.46, p < 0.001). All significant (p < 0.05) correlation coefficients are higher when using the corrected δ13C chronology considering an additional plant physiological response on increasing atmospheric CO2 concentration, than using the chronology corrected for δ13Catm changes alone. Spatial distribution of correlations between tree-ring data and climate variables for Eastern Siberia indicates that the summer temperature regime in the studied region is mostly influenced by Arctic air masses, but precipitation in July seems to be brought out from the Pacific region. Both the combined TRW + MXD record and the δ13S{cyrillic} record revealed a high reconstruction potential for summer temperature and precipitation, respectively, particularly on decadal and longer-term scales. © 2008 Elsevier B.V. All rights reserved.

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Держатели документа:
V.N.Sukachev Institute of Forest SB RAS, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Swiss Federal Research Institute WSL, 8903 Birmensdorf, Switzerland
Melnikov Institute, Permafrost SB RAS Yakutsk, Russian Federation
Research Centre Juelich GmbH, Institute of Chemistry and Dynamics in Geosphere: ICG-V, Juelich, Germany

Доп.точки доступа:
Kirdyanov, A.V.; Treydte, K.S.; Nikolaev, A.; Helle, G.; Schleser, G.H.

    Increasing relevance of spring temperatures for Norway spruce trees in Davos, Switzerland, after the 1950s
/ O. V. Churakova (Sidorova) [et al.] // Trees Struct. Funct. - 2014. - Vol. 28, Is. 1. - P183-191, DOI 10.1007/s00468-013-0941-6 . - ISSN 0931-1890

Кл.слова (ненормированные):
Climate -- Net ecosystem productivity -- Norway spruce -- Subalpine forest -- Tree-ring width

Аннотация: Key message: Relevance of spring temperatures for tree-ring growth steadily increased since 1950s. Closely linked tree-ring growth and net CO 2 exchange driven by spring temperatures. We investigated long-term (over 100 years) tree-ring width (TRW) variabilities as well as short-term (10 years) variations in net ecosystem productivity (NEP) in response to climate to assess the driving factors for stem growth of Norway spruce in a subalpine forest at Davos in Switzerland. A tree-ring width index (TRWi) chronology for the period from 1750 to 2006 was constructed and linked with climate data from 1876 to 2006, and with NEP available for the period from 1997 to 2006. Based on TRWi, we found that only two out of the 257 years exhibited extreme negative TRWi, compared to 29 years with extreme positive anomalies, observed mainly in recent decades. Annual temperature, annual precipitation, as well as autumn and winter temperature signals were well preserved in the TRWi chronology over the last 130 years. Spring temperatures became increasingly relevant for TRWi, explaining less than 1 % of the variation in TRWi for the period from 1876 to 2006, but 8 % for the period from 1950 to 2006 (p = 0.032), and even 47 % for 1997-2006 (p = 0.028). We also observed a strong positive relationship between annual TRWi and annual NEP (r = 0.661; p = 0.037), both strongly related to spring temperatures (r = 0.687 and r = 0.678 for TRWi and NEP, respectively; p = 0.028; p = 0.032). Moreover, we found strong links between monthly NEP of March and annual TRWi (r = 0.912; p = 0.0001), both related to March temperatures (r = 0.767, p = 0.010 and r = 0.724, p = 0.018, respectively). Thus, under future climate warming, we expect stem growth of these subalpine trees and also ecosystem carbon (C) sequestration to increase, as long as water does not become a limiting factor. © 2013 Springer-Verlag Berlin Heidelberg.

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Держатели документа:
V. N. Sukachev Institute of Forest SB RAS, 660036 Krasnoyarsk, Russian Federation
Institute of Agricultural Sciences, ETH Zurich, 8092 Zurich, Switzerland
Paul Scherrer Institute, 5232 Villigen, Switzerland
WSL, Swiss Federal Institute for Forest, Snow and Landscape Research, 8903 Birmensdorf, Switzerland

Доп.точки доступа:
Churakova (Sidorova), O.V.; Eugster, W.; Zielis, S.; Cherubini, P.; Etzold, S.; Saurer, M.; Siegwolf, R.; Buchmann, N.

    Revising midlatitude summer temperatures back to A.D. 600 based on a wood density network
/ L. Schneider [et al.] // Geophys. Res. Lett. - 2015. - Vol. 42, Is. 11. - P4556-4562, DOI 10.1002/2015GL063956 . - ISSN 0094-8276
Аннотация: Annually resolved and millennium-long reconstructions of large-scale temperature variability are primarily composed of tree ring width (TRW) chronologies. Changes in ring width, however, have recently been shown to bias the ratio between low- and high-frequency signals. To overcome limitations in capturing the full spectrum of past temperature variability, we present a network of 15 maximum latewood density (MXD) chronologies distributed across the Northern Hemisphere extratropics. Independent subsets of continental-scale records consistently reveal high MXD before 1580 and after 1910, with below average values between these periods. Reconstructed extratropical summer temperatures reflect not only these long-term trends but also distinct cooling pulses after large volcanic eruptions. In contrast to TRW-dominated reconstructions, this MXD-based record indicates a delayed onset of the Little Ice Age by almost two centuries. The reduced memory inherent in MXD is likely responsible for the rapid recovery from volcanic-induced cooling in the fourteenth century and the continuation of warmer temperatures until ~1600. ©2015. American Geophysical Union. All Rights Reserved.

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Держатели документа:
Department of Geography, Johannes Gutenberg University, Mainz, Germany
Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States
Swiss Federal Research Institute WSL, Birmensdorf, Switzerland
School of Geography and Geosciences, University of St Andrews, StAndrews, United Kingdom
Institute for the Humanities, Siberian Federal University, Krasnoyarsk, Russian Federation
V.N. Sukachev Institute of Forest SB RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Schneider, L.; Smerdon, J.E.; Buntgen, U.; Wilson, R.J.S.; Myglan, V.S.; Kirdyanov, A.V.; Esper, J.

    Climate-induced larch growth response within the central Siberian permafrost zone
/ V. I. Kharuk [et al.] // Environ.Res.Lett. - 2015. - Vol. 10, Is. 12, DOI 10.1088/1748-9326/10/12/125009 . - ISSN 1748-9318
Аннотация: Aim: estimation of larch (Larix gmelinii) growth response to current climate changes. Location: permafrost area within the northern part of Central Siberia (∼65.8°N, 98.5°E). Method: analysis of dendrochronological data, climate variables, drought index SPEI, GPP (gross primary production) and EVI vegetation index (both Aqua/MODIS satellite derived), and soil water content anomalies (GRACE satellite measurements of equivalent water thickness anomalies, EWTA). Results: larch tree ring width (TRW) correlated with previous year August precipitation (r = 0.63), snow accumulation (r = 0.61), soil water anomalies (r = 0.79), early summer temperatures and water vapor pressure (r = 0.73 and r = 0.69, respectively), May and June drought index (r = 0.68-0.82). There are significant positive trends of TRW since late 1980 s and GPP since the year 2000. Mean TRW increased by about 50%, which is similar to post-Little Ice Age warming. TRW correlated with GPP and EVI of larch stands (r = 0.68-0.69). Main conclusions: within the permafrost zone of central Siberia larch TRW growth is limited by early summer temperatures, available water from snowmelt, water accumulated within soil in the previous year, and permafrost thaw water. Water stress is one of the limiting factors of larch growth. Larch TRW growth and GPP increased during recent decades. © 2015 IOP Publishing Ltd.

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Держатели документа:
Sukachev Institute of Forest, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Siberian State Aerospace University, Krasnoyarsk, Russian Federation
NASA's GSFC, Greenbelt, MD, United States

Доп.точки доступа:
Kharuk, V. I.; Ranson, K. J.; Im, S. T.; Petrov, I. A.

    Growth coherency and climate sensitivity of Larix sibirica at the upper treeline in the Russian Altai-Sayan Mountains
/ A. V. Taynik [et al.] // Dendrochronologia. - 2016. - Vol. 39: Workshop on Current Status and the Potential of Tree-Ring Research in (JAN 20-21, 2015, Krasnoyarsk, RUSSIA). - P10-16, DOI 10.1016/j.dendro.2015.12.003. - Cited References:38 . - ISSN 1125-7865. - ISSN 1612-0051
РУБ Plant Sciences + Forestry + Geography, Physical

Аннотация: Tree-ring research in the Altai-Sayan Mountains so far only considered a limited number of well replicated site chronologies. The dendroecological and palaeoclimatological potential and limitations of large parts of south-central Russia therefore remain rather unexplored. Here, we present a newly updated network of 13 larch (Larix sibirica Ldb.) tree-ring width (TRW) chronologies from mid to higher elevations along a nearly 1000 km west-to-east transect across the greater Altai-Sayan region. All data were sampled between 2009 and 2014. The corresponding site chronologies cover periods from 440 to 860 years. The highest TRW agreement is found between chronologies >= 2200 m asl, whereas the material from lower elevations reveals overall less synchronized interannual to longer-term growth variability. While fluctuations in average June July temperature predominantly contribute to the growth at higher elevations, arid air masses from Mongolia mainly affect TRW formation at lower elevations. Our results are indicative for the dendroclimatological potential of the Altai-Sayan Mountains, where both, variation in summer temperature and hydroclimate can be robustly reconstructed back in time. These findings are valid for a huge region in central Asia where reliable meteorological observations are spatially scarce and temporally restricted to the second half of the 20th century. The development of new high-resolution climate reconstruction over several centuries to millennia will further appear beneficial for timely endeavors at the interface of archaeology, climatology and history. (C) 2015 Elsevier GmbH. All rights reserved.

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Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Sukachev Inst Forest SB RAS, Krasnoyarsk 660036, Russia.
Tuva State Univ, Kyzyl 667000, Republic Of Tuv, Russia.
Swiss Fed Res Inst WSL, Zurcherstr 111, CH-8903 Birmensdorf, Switzerland.

Доп.точки доступа:
Taynik, Anna V.; Barinov, Valentin V.; Oidupaa, Orlan Ch.; Myglan, Vladimir S.; Reinig, Frederick; Buntgen, Ulf

    Dendro-provenancing of Arctic driftwood
/ L. Hellmann [et al.] // Quat. Sci. Rev. - 2017. - Vol. 162. - P1-11, DOI 10.1016/j.quascirev.2017.02.025 . - ISSN 0277-3791

Кл.слова (ненормированные):
Arctic ocean -- Boreal forest -- Dendro-provenancing -- Driftwood -- Larix sp. -- Climate change -- Forestry -- Sea ice -- Sea level -- Transportation routes -- Arctic ocean -- Boreal forests -- Dendro-provenancing -- Driftwood -- Larix sp -- Wood -- Larix -- Larix sp. -- Picea

Аннотация: Arctic driftwood may represent a cross-disciplinary proxy archive at the interface of marine and terrestrial environments, which will likely gain in importance under future global climate change. Circumpolar network analyses that systematically consider species-specific boreal origin areas, transport routes and deposition characteristics of Arctic driftwood, are, however, missing. Here, we present tree-ring width (TRW) measurements of 2412 pine, larch and spruce driftwood samples from Greenland, Iceland, Svalbard, the Faroe Islands, and the Lena Delta in northeastern Siberia. Representing the largest Arctic driftwood TRW compilation, these data are compared against 495 TRW reference chronologies from the boreal forests of Eurasia and North America. The southern Yenisei region is the main source for recent pine driftwood at all Arctic sampling sites, whereas spruce mainly originates in western Russia and central Siberia, as well as in northern North America. Larch driftwood is, for the first time, dendro-provenanced to central and eastern Siberia. A new larch driftwood chronology extends the middle Lena River reference chronology back to 1203 CE. Annually resolved radiocarbon measurements further date six larch driftwood chronologies between 1294 and 2013 CE. Although being highly replicated, our study emphasizes the importance of interdisciplinary research efforts including radiocarbon dating, isotopic tracing and aDNA processing for improving Arctic driftwood provenancing in space and time. If successful, Arctic driftwood studies will contribute to the reconstruction of past boreal summer temperature variations and ocean current dynamics, as well as changes in sea ice extent and relative sea level over the last centuries to millennia. © 2017 Elsevier Ltd

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Держатели документа:
Instituto Argentino de Nivologia, Glaciologia y Ciencias Ambientales, CCT CONICET, Mendoza, Argentina
Swiss Federal Research Institute, WSL, Birmensdorf, Switzerland
Institute for Forest Sciences, University of Freiburg, Freiburg, Germany
V.N. Sukachev Institute of Forest SB RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
North-Eastern Federal University, Yakutsk, Russian Federation
Melnikov Permafrost Institute, Yakutsk, Russian Federation
Iceland Forest Service Mogilsa, Reykjavik, Iceland
Institute of Botany, Czech Academy of Sciences, Pruhonice, Czech Republic
ETH, Department of Physics, Ion Beam Physics, Zurich, Switzerland
Department of Geography, University of Cambridge, Cambridge, United Kingdom
CzechGlobe, Global Change Research Institute CAS and Masaryk University, Brno, Czech Republic

Доп.точки доступа:
Hellmann, L.; Tegel, W.; Geyer, J.; Kirdyanov, A. V.; Nikolaev, A. N.; Eggertsson, O.; Altman, J.; Reinig, F.; Morganti, S.; Wacker, L.; Buntgen, U.

    Fir decline and mortality in the southern Siberian Mountains
/ V. I. Kharuk [et al.] // Reg. Envir. Chang. - 2017. - Vol. 17, Is. 3. - P803-812, DOI 10.1007/s10113-016-1073-5. - Cited References:44. - This study was supported by Russian Science Fund (RNF) (Grant No. 14-24-00112). K. J. Ranson's contribution was supported in part by the NASA's Terrestrial Ecology Program. . - ISSN 1436-3798. - ISSN 1436-378X
РУБ Environmental Sciences + Environmental Studies

Аннотация: Increased dieback and mortality of ``dark needle conifer'' (DNC) stands (composed of fir (Abies sibirica), Siberian pine (Pinus sibirica) and spruce (Picea obovata)) were documented in Russia during recent decades. Here we analyzed spatial and temporal patterns of fir decline and mortality in the southern Siberian Mountains based on satellite, in situ and dendrochronological data. The studied stands are located within the boundary between DNC taiga to the north and forest-steppe to the south. Fir decline and mortality were observed to originate where topographic features contributed to maximal water-stress risk, i.e., steep (18 degrees - 25 degrees), convex, south-facing slopes with a shallow well-drained root zone. Fir regeneration survived droughts and increased stem radial growth, while upper canopy trees died. Tree ring width (TRW) growth negatively correlated with vapor pressure deficit (VPD), drought index and occurrence of late frosts, and positively with soil water content. Previous year growth conditions (i.e., drought index, VPD, soil water anomalies) have a high impact on current TRW (r = 0.60-0.74). Fir mortality was induced by increased water stress and severe droughts (as a primary factor) in synergy with bark-beetles and fungi attacks (as secondary factors). Dendrochronology data indicated that fir mortality is a periodic process. In a future climate with increased aridity and drought frequency, fir (and Siberian pine) may disappear from portions of its current range (primarily within the boundary with the foreststeppe) and is likely to be replaced by drought-tolerant species such as Pinus sylvestris and Larix sibirica.

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Держатели документа:
Sukachev Inst Forest, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.
Siberian State Aerosp Univ, Krasnoyarsk, Russia.
NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.

Доп.точки доступа:
Kharuk, Viacheslav I.; Im, Sergei T.; Petrov, Ilya A.; Dvinskaya, Mariya L.; Fedotova, Elena V.; Ranson, Kenneth J.; Russian Science Fund (RNF) [14-24-00112]; NASA's Terrestrial Ecology Program

    Siberian tree-ring and stable isotope proxies as indicators of temperature and moisture changes after major stratospheric volcanic eruptions
/ O. V. Churakova [et al.] // Clim. Past. - 2019. - Vol. 15, Is. 2. - P685-700, DOI 10.5194/cp-15-685-2019. - Cited References:91. - This work was supported by a Marie Curie International Incoming Fellowship (EU_ISOTREC 235122), a Reintegration Marie Curie Fellowship (909122), and grants to the following: a UFZ scholarship (2006), RFBR (09-05-98015_r_sibir_a), granted to Olga V. Churakova (Sidorova); SNSF to Matthias Saurer (200021_ 121838/1); an Era. Net RusPlus project granted to Markus Stoffel (SNF IZRPZ0_ 164735); RFBR (no. 16-55-76012 Era_ a) granted to Eugene A. Vaganov; and a project grant to Vladimir S. Myglan RNF, Russian Scientific Fund (no. 15-14-30011). Alexander V. Kirdyanov was supported by the Ministry of Education and Science of the Russian Federation (no. 5.3508.2017/4.6) and RSF (no. 14-14-00295). We acknowledge a Scientific School (3297.2014.4) grant to Eugene A. Vaganov, US National Science Foundation (NSF) grants (no. 9413327, no. 970966, no. 0308525) to Malcolm K. Hughes, and US CRDF grant no. RC1-279 to Malcolm K. Hughes and Eugene A. Vaganov. We thank Tatjana Boettger for her support and access to the stable isotope facilities within the framework of the UFZ Haale/Saale scholarship 2006 and stable isotope facilities at the Paul Scherrer Institute (PSI), Switzerland; we thank Anne Verstege and Daniel Nievergelt for their help with sample preparation for the MXD and Paolo Cherubini for providing lab access at the Swiss Federal Institute for Forest, Snow and Landscape Research (WSL). . - ISSN 1814-9324. - ISSN 1814-9332
РУБ Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences

Аннотация: Stratospheric volcanic eruptions have far-reaching impacts on global climate and society. Tree rings can provide valuable climatic information on these impacts across different spatial and temporal scales. To detect temperature and hydroclimatic changes after strong stratospheric Common Era (CE) volcanic eruptions for the last 1500 years (535 CE unknown, 540 CE unknown, 1257 CE Samalas, 1640 CE Parker, 1815 CE Tambora, and 1991 CE Pinatubo), we measured and analyzed tree-ring width (TRW), maximum late-wood density (MXD), cell wall thickness (CWT), and delta C-13 and delta O-18 in tree-ring cellulose chronologies of climate-sensitive larch trees from three different Siberian regions (northeastern Yakutia - YAK, eastern Taimyr - TAY, and Russian Altai - ALT). All tree-ring proxies proved to encode a significant and specific climatic signal of the growing season. Our findings suggest that TRW, MXD, and CWT show strong negative summer air temperature anomalies in 536, 541-542, and 1258-1259 at all studied regions. Based on delta C-13, 536 was extremely humid at YAK, as was 537-538 in TAY. No extreme hydroclimatic anomalies occurred in Siberia after the volcanic eruptions in 1640, 1815, and 1991, except for 1817 at ALT. The signal stored in delta O-18 indicated significantly lower summer sunshine duration in 542 and 1258-1259 at YAK and 536 at ALT. Our results show that trees growing at YAK and ALT mainly responded the first year after the eruptions, whereas at TAY, the growth response occurred after 2 years. The fact that differences exist in climate responses to volcanic eruptions - both in space and time - underlines the added value of a multiple tree-ring proxy assessment. As such, the various indicators used clearly help to provide a more realistic picture of the impact of volcanic eruption on past climate dynamics, which is fundamental for an improved understanding of climate dynamics, but also for the validation of global climate models.

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Держатели документа:
Univ Geneva, Inst Environm Sci, 66 Bvd Carl Vogt, CH-1205 Geneva, Switzerland.
Siberian Fed Univ, Inst Ecol & Geog, Svobodny Pr 79, Krasnoyarsk 660041, Russia.
Swiss Fed Inst Forest Snow & Landscape Res WSL, Zurcherstr 111, CH-8903 Birmensdorf, Switzerland.
Paul Scherrer Inst, CH-5232 Villigen, Switzerland.
Univ Blaise Pascal, Geolab, CNRS, UMR 6042, 4 Rue Ledru, F-63057 Clermont Ferrand, France.
Siberian Fed Univ, Inst Humanities, Svobodny Pr 82, Krasnoyarsk 660041, Russia.
RAS, VN Sukachev Inst Forest, SB, Fed Res Ctr Krasnoyarsk Sci Ctr, Akademgorodok 50,Bldg 28, Krasnoyarsk 660036, Russia.
Univ Cambridge, Dept Geog, Downing Pl, Cambridge CB2 3EN, England.
Siberian Fed Univ, Inst Fundamental Biol & Biotechnol, Svobodny Pr 79, Krasnoyarsk 660041, Russia.
Univ Arizona, Lab Tree Ring Res, 1215 E Lowell St, Tucson, AZ 85721 USA.
Siberian Fed Univ, Rectorate, Svobodny Pr 79-10, Krasnoyarsk 660041, Russia.
Univ Geneva, Dept Earth Sci, 13 Rue Maraichers, CH-1205 Geneva, Switzerland.
Univ Geneva, Dept FA Forel Environm & Aquat Sci, 66 Blvd Carl Vogt, CH-1205 Geneva, Switzerland.

Доп.точки доступа:
Churakova, O. V.; Fonti, Marina V.; Saurer, Matthias; Guillet, Sebastien; Corona, Christophe; Fonti, Patrick; Myglan, Vladimir S.; Kirdyanov, Alexander V.; Naumova, Oksana V.; Ovchinnikov, Dmitriy V.; Shashkin, Alexander V.; Panyushkina, Irina P.; Buntgen, Ulf; Hughes, Malcolm K.; Vaganov, Eugene A.; Siegwolf, Rolf T. W.; Stoffel, Markus; Churakova, Olga; Marie Curie International Incoming Fellowship [EU_ISOTREC 235122]; Reintegration Marie Curie Fellowship [909122]; RFBR [16-55-76012, 09-05-98015_r_sibir_a]; SNSF [200021_ 121838/1, SNF IZRPZ0_ 164735]; Russian Scientific Fund [15-14-30011]; Ministry of Education and Science of the Russian Federation [5.3508.2017/4.6]; RSF [14-14-00295, 3297.2014.4]; US National Science Foundation (NSF) [9413327, 970966, 0308525]; US CRDF [RC1-279]

    Eco-physiological response of conifers from high-latitude and -altitude eurasian regions to stratospheric volcanic eruptions
/ O. V. Churakova, M. V. Fonti, A. V. Kirdyanov [и др.] // Journal of Siberian Federal University - Biology. - 2020. - Vol. 13, Is. 1. - С. 5-24, DOI 10.17516/1997-1389-0313 . - ISSN 1997-1389
Аннотация: Stratospheric volcanic eruptions have had significant impacts on the radiation budget, atmospheric and surface temperatures, precipitation and regional weather patterns, resulting in global climatic changes. The changes associated with such eruptions most commonly result in cooling during several years after events. This study aimed to reveal eco-physiological response of larch trees from northeastern Yakutia (YAK), eastern Taimyr (TAY) and Altai (ALT) regions to climatic anomalies after major volcanic eruptions CE 535, 540, 1257, 1641, 1815 and 1991 using new multiple tree-ring parameters: Tree-ring width (TRW), maximum latewood density (MXD), cell wall thicknesses (CWT), ?13C and ?18O in tree-ring cellulose. This investigation showed that TRW, CWT, MXD and ?18O chronologies recorded temperature signal, while information about precipitation and vapor pressure deficit was captured by ?13C chronologies. Sunshine duration was well recorded in ?18O from YAK and ALT. Tree-ring parameters recorded cold, wet and cloudy summer anomalies during the 6th and 13th centuries. However, significant summer anomalies after Tambora (1815) and Pinatubo (1991) eruptions were not captured by any tree-ring parameters. © 2020 JMIR Human Factors.All right reserved.

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Держатели документа:
Siberian Federal University, Krasnoyarsk, Russian Federation
University of Geneva, Geneva, Switzerland
Swiss Federal Research Institute for Forest, Snow and Landscape WSL, Birmensdorf, Switzerland
Sukachev Institute of Forest SB RASFRC "Krasnoyarsk Science Center SB RAS", Krasnoyarsk, Russian Federation
University of Cambridge, Cambridge, United Kingdom
Paul Scherrer Institute Villigen - PSI, Switzerland
Universite Blaise Pascal Clermont-Ferrand, France
University of Arizona, Tucson, United States

Доп.точки доступа:
Churakova, O. V.; Fonti, M. V.; Kirdyanov, A. V.; Myglan, V. S.; Barinov, V. V.; Sviderskaya, I. V.; Naumova, O. V.; Ovchinnikov, D. V.; Shashkin, A. V.; Saurer, M.; Guillet, S.; Corona, C.; Fonti, P.; Panyushkina, I. P.; Buntgen, U.; Hughes, M. K.; Siegwolf, R. T.W.; Stoffel, M.; Vaganov, E. A.

    Contribution of xylem anatomy to tree-ring width of two larch species in permafrost and non-permafrost zones of Siberia
/ M. I. Popkova, V. V. Shishov, E. A. Vaganov [et al.] // Forests. - 2020. - Vol. 11, Is. 12. - Ст. 1343. - P1-13, DOI 10.3390/f11121343 . - ISSN 1999-4907
Аннотация: Plants exhibit morphological and anatomical adaptations to cope the environmental constraints of their habitat. How can mechanisms for adapting to contrasting environmental conditions change the patterns of tree rings formation? In this study, we explored differences in climatic conditions of permafrost and non-permafrost zones and assessed their influence on radial growth and wood traits of Larix gmelinii Rupr (Rupr) and Larix sibirica L., respectively. We quantified the contribution of xylem cell anatomy to the tree-ring width variability. Comparison of the anatomical tree-ring parameters over the period 1963–2011 was tested based on non-parametric Mann-Whitney U test. The generalized linear modeling shows the common dependence between TRW and the cell structure characteristics in contrasting environments, which can be defined as non-specific to external conditions. Thus, the relationship between the tree-ring width and the cell production in early-and latewood are assessed as linear, whereas the dependence between the radial cell size in early-and latewood and the tree-ring width becomes significantly non-linear for both habitats. Moreover, contribution of earlywood (EW) and latewood (LW) cells to the variation of TRW (in average 56.8% and 24.4% respectively) was significantly higher than the effect of cell diameters (3.3% (EW) and 17.4% (LW)) for the environments. The results show that different larch species from sites with diverging climatic conditions converge towards similar xylem cell structures and relationships between xylem production and cell traits. The work makes a link between climate and tree-ring structure, and promotes a better understanding the anatomical adaptation of larch species to local environment conditions. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.

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Держатели документа:
Laboratory of Complex Research of Forest Dynamics in Eurasia, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Environmental and Research Center, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China
Scientific Laboratory of Forest Health, Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, 660041, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
V.N. Sukachev Institute of Forest SB RAS, Federal Research Centre, Krasnoyarsk, 660036, Russian Federation
Laboratory of Ecosystems Biogeochemistry, Institute of Ecology and Geography, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Landscape Dynamics, Swiss Federal Research Institute WSL, Birmensdorf, CH-8903, Switzerland
Khakass Technical Institute, Siberian Federal University, Abakan, 655017, Russian Federation
Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China
Departement des Sciences Fondamentales, Universite du Quebec a Chicoutimi, Chicoutimi, QC G7H 2B1, Canada

Доп.точки доступа:
Popkova, M. I.; Shishov, V. V.; Vaganov, E. A.; Fonti, M. V.; Kirdyanov, A. V.; Babushkina, E. A.; Huang, J. -G.; Rossi, S.

    Modeling the radial stem growth of the pine (Pinus sylvestris l.) forests using the satellite-derived ndvi and lst (modis/aqua) data
/ Y. Ivanova, A. Kovalev, V. Soukhovolsky // Atmosphere. - 2021. - Vol. 12, Is. 1. - Ст. 12. - P1-15, DOI 10.3390/atmos12010012 . - ISSN 2073-4433
Аннотация: The paper considers a new approach to modeling the relationship between the increase in woody phytomass in the pine forest and satellite-derived Normalized Difference Vegetation Index (NDVI) and Land Surface Temperature (LST) (MODIS/AQUA) data. The developed model combines the phenological and forest growth processes. For the analysis, NDVI and LST (MODIS) satellite data were used together with the measurements of tree-ring widths (TRW). NDVI data contain features of each growing season. The models include parameters of parabolic approximation of NDVI and LST time series transformed using principal component analysis. The study shows that the current rate of TRW is determined by the total values of principal components of the satellite indices over the season and the rate of tree increment in the preceding year. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.

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Держатели документа:
Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, Krasnoyarsk, 660036, Russian Federation
Federal Research Center “Krasnoyarsk Science Center SB RAS”, Krasnoyarsk, 660036, Russian Federation
Sukachev Institute of Forest SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Ivanova, Y.; Kovalev, A.; Soukhovolsky, V.

    Contribution of Xylem Anatomy to Tree-Ring Width of Two Larch Species in Permafrost and Non-Permafrost Zones of Siberia
/ M. I. Popkova, V. V. Shishov, E. A. Vaganov [et al.] // Forests. - 2020. - Vol. 11, Is. 12. - Ст. 1343, DOI 10.3390/f11121343. - Cited References:58. - This work was supported by the Russian Ministry of Science and Higher Education (projects #FSRZ-2020-0010 and #FSRZ-2020-0014) and the Russian Science Foundation [Grant 18-14-00072]. M. Popkova received a Merit scholarship for foreign students from Fonds de Recherche du Quebec-Nature et Technologie (FRQNT) for completing this work. MVF was supported by RFBR and Krasnoyarsk Region (project number 18-45-240001 r_a). V.V.S. appreciates the support of the project #FEFE-2020-0014 (Russian Ministry of Science and Higher Education). . - ISSN 1999-4907
РУБ Forestry

Аннотация: Plants exhibit morphological and anatomical adaptations to cope the environmental constraints of their habitat. How can mechanisms for adapting to contrasting environmental conditions change the patterns of tree rings formation? In this study, we explored differences in climatic conditions of permafrost and non-permafrost zones and assessed their influence on radial growth and wood traits of Larix gmelinii Rupr (Rupr) and Larix sibirica L., respectively. We quantified the contribution of xylem cell anatomy to the tree-ring width variability. Comparison of the anatomical tree-ring parameters over the period 1963-2011 was tested based on non-parametric Mann-Whitney U test. The generalized linear modeling shows the common dependence between TRW and the cell structure characteristics in contrasting environments, which can be defined as non-specific to external conditions. Thus, the relationship between the tree-ring width and the cell production in early- and latewood are assessed as linear, whereas the dependence between the radial cell size in early- and latewood and the tree-ring width becomes significantly non-linear for both habitats. Moreover, contribution of earlywood (EW) and latewood (LW) cells to the variation of TRW (in average 56.8% and 24.4% respectively) was significantly higher than the effect of cell diameters (3.3% (EW) and 17.4% (LW)) for the environments. The results show that different larch species from sites with diverging climatic conditions converge towards similar xylem cell structures and relationships between xylem production and cell traits. The work makes a link between climate and tree-ring structure, and promotes a better understanding the anatomical adaptation of larch species to local environment conditions.

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Держатели документа:
Siberian Fed Univ, Lab Complex Res Forest Dynam Eurasia, Krasnoyarsk 660041, Russia.
Chinese Acad Sci, Environm & Res Ctr, South China Bot Garden, Guangzhou 510650, Peoples R China.
Reshetnev Siberian State Univ Sci & Technol, Sci Lab Forest Hlth, Krasnoyarsk 660041, Russia.
Siberian Fed Univ, Rectorate, Krasnoyarsk 660041, Russia.
VN Sukachev Inst Forest SB RAS, Fed Res Ctr, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Ecol & Geog, Lab Ecosyst Biogeochem, Krasnoyarsk 660041, Russia.
Swiss Fed Res Inst WSL, Landscape Dynam, CH-8903 Birmensdorf, Switzerland.
Siberian Fed Univ, Khakass Tech Inst, Abakan 655017, Russia.
Chinese Acad Sci, Key Lab Vegetat Restorat & Management Degraded Ec, South China Bot Garden, Guangzhou 510650, Peoples R China.
Univ Quebec Chicoutimi, Dept Sci Fondamentales, Chicoutimi, PQ G7H 2B1, Canada.

Доп.точки доступа:
Popkova, Margarita, I; Shishov, Vladimir V.; Vaganov, Eugene A.; Fonti, Marina, V; Kirdyanov, Alexander, V; Babushkina, Elena A.; Huang, Jian-Guo; Rossi, Sergio; Russian Ministry of Science and Higher Education [FSRZ-2020-0010, FSRZ-2020-0014, FEFE-2020-0014]; Russian Science FoundationRussian Science Foundation (RSF) [18-14-00072]; Fonds de Recherche du Quebec-Nature et Technologie (FRQNT); RFBRRussian Foundation for Basic Research (RFBR) [18-45-240001 r_a]; Krasnoyarsk Region [18-45-240001 r_a]

    Modeling the Radial Stem Growth of the Pine (Pinus sylvestris L.) Forests Using the Satellite-Derived NDVI and LST (MODIS/AQUA) Data
/ Y. Ivanova, A. Kovalev, V. Soukhovolsky // Atmosphere. - 2021. - Vol. 12, Is. 1. - Ст. 12, DOI 10.3390/atmos12010012. - Cited References:51. - This research was funded by RFBR according to the research project number 18-04-00119-a. . - ISSN 2073-4433
РУБ Environmental Sciences + Meteorology & Atmospheric Sciences

Кл.слова (ненормированные):
boreal forests -- tree and forest functioning -- tree ring width -- field -- measurements -- remote sensing data analysis -- modeling studies of forest

Аннотация: The paper considers a new approach to modeling the relationship between the increase in woody phytomass in the pine forest and satellite-derived Normalized Difference Vegetation Index (NDVI) and Land Surface Temperature (LST) (MODIS/AQUA) data. The developed model combines the phenological and forest growth processes. For the analysis, NDVI and LST (MODIS) satellite data were used together with the measurements of tree-ring widths (TRW). NDVI data contain features of each growing season. The models include parameters of parabolic approximation of NDVI and LST time series transformed using principal component analysis. The study shows that the current rate of TRW is determined by the total values of principal components of the satellite indices over the season and the rate of tree increment in the preceding year.

WOS

Держатели документа:
RAS, Krasnoyarsk Sci Ctr SB, Fed Res Ctr, Inst Biophys, Krasnoyarsk 660036, Russia.
RAS, Krasnoyarsk Sci Ctr SB, Fed Res Ctr, Krasnoyarsk 660036, Russia.
RAS, Krasnoyarsk Sci Ctr SB, Fed Res Ctr, Sukachev Inst Forest, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Ivanova, Yulia; Kovalev, Anton; Soukhovolsky, Vlad; RFBRRussian Foundation for Basic Research (RFBR) [18-04-00119-a]