: сборник научных трудов / H. Santruckova, O. B. Shibistova // Tree species effects on soils: implications for global change. - 2005. - С. 229-246. - Библиогр. в конце ст.
Аннотация: Microbial parameters derived from the short-term Michaelis-Menten type model are tested and applied on the ecosystem study Soil dried immediately after sampling and stored at 4 graduate C was moistened to 60% water holding capacity and CO2 production was measured (GC) after 24 h (respiration response to water supply, Vds). The glucose was added into the soil and CO2 production was measured 16 to 24 h later (maximum respiration, Vmax). Substrate saturation kinetics of respiration was measured after addition of glucose in 6 different concentrations. Soil heterotrophic respiratory potential was expressed as Vds/Vmax ratio; biologically available C (ACbr) and potential flush of the biologically available C (ACds/ACbr) was estimated using Michaelis-Menten type model. After moistening of the soils, extra C is released, the amount of which is characteristic for the given soil. Application pf the short-term kinetic approach on the upper soil layer of various ecosystems (Western Canada, Central Siberia transect).
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок 50/28
Доп.точки доступа:
Santruckova, H.; Сантрукова Н.; Shibistova, Olga Borisovna; Шибистова, Ольга Борисовна
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Short-term microbial kinetics of soil microbial respiration - A general parameter across scales
Changes in properties of soils in foci of Siberian moth (Dendrolimus sibiricus) outbreaks
[Text] / Y. N. Krasnoshchekov, Z. V. Vishnyakova // Eurasian Soil Sci. - 2003. - Vol. 36, Is. 12. - P1298-1306. - Cited References: 15
. - 9. - ISSN 1064-2293
РУБ Soil Science
Аннотация: The experimental data on the transformation of properties of soddy-deeply podzolic soils and raw humus burozems under fir forests defoliated by the Siberian moth Dendrolimus sibiricus are analyzed. In the first two months after the addition of Siberian moth excrements to the forest litter, the population of all ecological-trophic groups of microorganisms was shown to increase by 13 times, that of ammonifying phototrophs and microorganisms, taking part in humus mineralization, by 42 and 9 times, respectively. The leaching of water-soluble carbon from litters in forests defoliated by the Siberian moth was by 21-26% higher than that from litters of control ones. A year later, it was reduced to 14%. The content of exchangeable hydrogen and total acidity decreased, and the degree of base saturation increased. Within 5-6 years after the Siberian moth invasion, the transformation of physicochemical, chemical, and microbiological properties of soils was specified by succession development of the plant cover.
WOS,
Scopus
Держатели документа:
Russian Acad Sci, Siberian Div, Sukachev Inst Forestry, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Krasnoshchekov, Y.N.; Vishnyakova, Z.V.
Аннотация: The experimental data on the transformation of properties of soddy-deeply podzolic soils and raw humus burozems under fir forests defoliated by the Siberian moth Dendrolimus sibiricus are analyzed. In the first two months after the addition of Siberian moth excrements to the forest litter, the population of all ecological-trophic groups of microorganisms was shown to increase by 13 times, that of ammonifying phototrophs and microorganisms, taking part in humus mineralization, by 42 and 9 times, respectively. The leaching of water-soluble carbon from litters in forests defoliated by the Siberian moth was by 21-26% higher than that from litters of control ones. A year later, it was reduced to 14%. The content of exchangeable hydrogen and total acidity decreased, and the degree of base saturation increased. Within 5-6 years after the Siberian moth invasion, the transformation of physicochemical, chemical, and microbiological properties of soils was specified by succession development of the plant cover.
WOS,
Scopus
Держатели документа:
Russian Acad Sci, Siberian Div, Sukachev Inst Forestry, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Krasnoshchekov, Y.N.; Vishnyakova, Z.V.
Water use strategies and ecosystem-atmosphere exchange of CO2 in two highly seasonal environments
[Text] / A. . Arneth [et al.] // Biogeosciences. - 2006. - Vol. 3, Is. 4. - P421-437. - Cited References: 67
. - 17. - ISSN 1726-4170
РУБ Ecology + Geosciences, Multidisciplinary
Аннотация: We compare assimilation and respiration rates, and water use strategies in four divergent ecosystems located in cold-continental central Siberia and in semi-arid southern Africa. These seemingly unrelated systems have in common a harsh and highly seasonal environment with a very sharp transition between the dormant and the active season, with vegetation facing dry air and soil conditions for at least part of the year. Moreover, the northern high latitudes and the semi-arid tropics will likely experience changes in key environmental parameters (e.g., air temperature and precipitation) in the future; indeed, in some regions marked climate trends have already been observed over the last decade or so. The magnitude of instantaneous or daily assimilation and respiration rates, derived from one to two years of eddy covariance measurements in each of the four ecosystems, was not related to the growth environment. For instance, respiration rates were clearly highest in the two deciduous systems included in the analysis (a Mopane woodland In northern Botswana and a Downy birch forest in Siberia; 300mmol m(-2) d(-1)), while assimilation rates in the Mopane woodland were relatively similar to a Siberian Scots pine canopy for a large part of the active season (ca. 420 mmol m(-2) d(-1)). Acknowledging the limited number of ecosystems compared here, these data nevertheless demonstrate that factors like vegetation type, canopy phenology or ecosystem age can override larger-scale climate differences in terms of their effects on carbon assimilation and respiration rates. By far the highest rates of assimilation were observed in Downy birch, an early successional species. These were achieved at a rather conservative water use, as indicated by relatively low levels of lambda the marginal water cost of plant carbon gain. Surprisingly, the Mopane woodland growing in the semi-arid environment had significantly higher values of lambda However, its water use strategy included a very plastic response to intermittently dry periods, and values of lambda were much more conservative overall during a rainy season with low precipitation and high air saturation deficits. Our comparison demonstrates that forest ecosystems can respond very dynamically in terms of water use strategy, both on interannual and much shorter time scales. But it remains to be evaluated whether and in which ecosystems this plasticity is mainly due to a short-term stomatal response, or alternatively goes hand in hand with changes in canopy photosynthetic capacity.
WOS,
Scopus
Держатели документа:
Lund Univ, Dept Phys Geog & Ecosyst Anal, S-22363 Lund, Sweden
Max Planck Inst Biogeochem, D-07701 Jena, Germany
Univ Wageningen & Res Ctr, Nat Conservat & Plant Ecol Grp, Wageningen, Netherlands
Univ Tuscia, Viterbo, Italy
Int Inst Geoinformat Sci & Earth Observat, Enschede, Netherlands
VN Sukachev Forest Inst, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Arneth, A...; Veenendaal, E.M.; Best, C...; Timmermans, W...; Kolle, O...; Montagnani, L...; Shibistova, O...
Рубрики:
SIBERIAN PINE FOREST
CARBON-DIOXIDE
INTERANNUAL VARIABILITY
TERRESTRIAL ECOSYSTEMS
VEGETATION DYNAMICS
CLIMATE-CHANGE
MODEL
RESPIRATION
FLUXES
ENERGY
SIBERIAN PINE FOREST
CARBON-DIOXIDE
INTERANNUAL VARIABILITY
TERRESTRIAL ECOSYSTEMS
VEGETATION DYNAMICS
CLIMATE-CHANGE
MODEL
RESPIRATION
FLUXES
ENERGY
Аннотация: We compare assimilation and respiration rates, and water use strategies in four divergent ecosystems located in cold-continental central Siberia and in semi-arid southern Africa. These seemingly unrelated systems have in common a harsh and highly seasonal environment with a very sharp transition between the dormant and the active season, with vegetation facing dry air and soil conditions for at least part of the year. Moreover, the northern high latitudes and the semi-arid tropics will likely experience changes in key environmental parameters (e.g., air temperature and precipitation) in the future; indeed, in some regions marked climate trends have already been observed over the last decade or so. The magnitude of instantaneous or daily assimilation and respiration rates, derived from one to two years of eddy covariance measurements in each of the four ecosystems, was not related to the growth environment. For instance, respiration rates were clearly highest in the two deciduous systems included in the analysis (a Mopane woodland In northern Botswana and a Downy birch forest in Siberia; 300mmol m(-2) d(-1)), while assimilation rates in the Mopane woodland were relatively similar to a Siberian Scots pine canopy for a large part of the active season (ca. 420 mmol m(-2) d(-1)). Acknowledging the limited number of ecosystems compared here, these data nevertheless demonstrate that factors like vegetation type, canopy phenology or ecosystem age can override larger-scale climate differences in terms of their effects on carbon assimilation and respiration rates. By far the highest rates of assimilation were observed in Downy birch, an early successional species. These were achieved at a rather conservative water use, as indicated by relatively low levels of lambda the marginal water cost of plant carbon gain. Surprisingly, the Mopane woodland growing in the semi-arid environment had significantly higher values of lambda However, its water use strategy included a very plastic response to intermittently dry periods, and values of lambda were much more conservative overall during a rainy season with low precipitation and high air saturation deficits. Our comparison demonstrates that forest ecosystems can respond very dynamically in terms of water use strategy, both on interannual and much shorter time scales. But it remains to be evaluated whether and in which ecosystems this plasticity is mainly due to a short-term stomatal response, or alternatively goes hand in hand with changes in canopy photosynthetic capacity.
WOS,
Scopus
Держатели документа:
Lund Univ, Dept Phys Geog & Ecosyst Anal, S-22363 Lund, Sweden
Max Planck Inst Biogeochem, D-07701 Jena, Germany
Univ Wageningen & Res Ctr, Nat Conservat & Plant Ecol Grp, Wageningen, Netherlands
Univ Tuscia, Viterbo, Italy
Int Inst Geoinformat Sci & Earth Observat, Enschede, Netherlands
VN Sukachev Forest Inst, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Arneth, A...; Veenendaal, E.M.; Best, C...; Timmermans, W...; Kolle, O...; Montagnani, L...; Shibistova, O...
Assessing the fire hazard from weather conditions in mountain forests of the Southern Baikal region
/ T. M. Sofronova, A. V. Volokitina, M. A. Sofronov // Geography and Natural Resources. - 2008. - Vol. 29, Is. 2. - P163-168, DOI 10.1016/j.gnr.2008.06.009
. - ISSN 1875-3728
Кл.слова (ненормированные):
fire hazard, vertical zonality, actual burnability of forests, rainless -- air temperature -- fire -- hazard assessment -- montane forest -- precipitation intensity -- saturation -- weather -- Baikal Region -- Eurasia -- Russian Federation
Аннотация: We suggest the scheme for compiling scales of daily district-by-district fire-hazard assessment having regard to the weather conditions. Information on air temperature and saturation deficiency for 14 hours, and also the amount of precipitation for 24 hours are used in calculating meteorological indices of fire hazard. В© 2008.
Scopus
Держатели документа:
Institute of Forest SB RAS, Krasnoyarsk, Russian Federation
Доп.точки доступа:
Sofronova, T.M.; Volokitina, A.V.; Sofronov, M.A.
Кл.слова (ненормированные):
fire hazard, vertical zonality, actual burnability of forests, rainless -- air temperature -- fire -- hazard assessment -- montane forest -- precipitation intensity -- saturation -- weather -- Baikal Region -- Eurasia -- Russian Federation
Аннотация: We suggest the scheme for compiling scales of daily district-by-district fire-hazard assessment having regard to the weather conditions. Information on air temperature and saturation deficiency for 14 hours, and also the amount of precipitation for 24 hours are used in calculating meteorological indices of fire hazard. В© 2008.
Scopus
Держатели документа:
Institute of Forest SB RAS, Krasnoyarsk, Russian Federation
Доп.точки доступа:
Sofronova, T.M.; Volokitina, A.V.; Sofronov, M.A.
Incorporating the mechanisms underlying inter-tree competition into a random point process model to improve spatial tree pattern analysis in forestry
/ A. Genet [et al.] // Ecol. Model. - 2014. - Vol. 288. - P143-154, DOI 10.1016/j.ecolmodel.2014.06.002
. - ISSN 0304-3800
Кл.слова (ненормированные):
Area-interaction point process -- Forest ecosystem -- Geyer's saturation point process -- Inter-tree competition -- Spatial point processes -- Spatial tree patterns -- Ecology -- Forest ecosystem -- Point process -- Saturation point -- Spatial point process -- Tree pattern -- Forestry -- Competition -- Ecosystems -- Forests
Аннотация: The spatial structure of complex forest stands results from competitive interactions among trees which is one of the most important ecological processes influencing forest development. The aim of the study is to incorporate in a new class of random point process models a coherent representation of the competition process driving forest stand dynamics to establish a direct link between pattern and ecological processes. The resulting area-saturation model was defined by a set statistic characterised by overlapping discs representing tree interactions. Unlike previous approaches, this new spatial model has the advantage of allowing a straightforward interpretation of its parameters in terms of inter-tree competition. A 60. m. ?. 60. m plot of even-aged Scots pines was used to illustrate the potential of this approach in modelling the spatial structure of a plant community. The social status of each tree was taken into account, leading to a multivariate point pattern exhibiting various spatial properties (regularity, clustering and randomness) at different scales. We considered a hierarchical structure of interactions to account for the fact that competition for light is size-asymmetric. According to the analysis, the generalised area-saturation model has the required flexibility to capture complex spatial tree patterns. © 2014 Elsevier B.V.
Scopus,
Полный текст,
WOS
Держатели документа:
Centre d' etude de la foret, Departement des sciences du bois et de la foret, Pavillon Abitibi-Price, Universite Laval, 2405 rue de la Terrasse, Quebec, QC G1V 0A6, Canada
Institute of Physico-Chemical and Biological Problems in Soil Science, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russian Federation
Sukachev Institute of Forest, Siberian Branch of Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Доп.точки доступа:
Genet, A.; Grabarnik, P.; Sekretenko, O.; Pothier, D.
Кл.слова (ненормированные):
Area-interaction point process -- Forest ecosystem -- Geyer's saturation point process -- Inter-tree competition -- Spatial point processes -- Spatial tree patterns -- Ecology -- Forest ecosystem -- Point process -- Saturation point -- Spatial point process -- Tree pattern -- Forestry -- Competition -- Ecosystems -- Forests
Аннотация: The spatial structure of complex forest stands results from competitive interactions among trees which is one of the most important ecological processes influencing forest development. The aim of the study is to incorporate in a new class of random point process models a coherent representation of the competition process driving forest stand dynamics to establish a direct link between pattern and ecological processes. The resulting area-saturation model was defined by a set statistic characterised by overlapping discs representing tree interactions. Unlike previous approaches, this new spatial model has the advantage of allowing a straightforward interpretation of its parameters in terms of inter-tree competition. A 60. m. ?. 60. m plot of even-aged Scots pines was used to illustrate the potential of this approach in modelling the spatial structure of a plant community. The social status of each tree was taken into account, leading to a multivariate point pattern exhibiting various spatial properties (regularity, clustering and randomness) at different scales. We considered a hierarchical structure of interactions to account for the fact that competition for light is size-asymmetric. According to the analysis, the generalised area-saturation model has the required flexibility to capture complex spatial tree patterns. © 2014 Elsevier B.V.
Scopus,
Полный текст,
WOS
Держатели документа:
Centre d' etude de la foret, Departement des sciences du bois et de la foret, Pavillon Abitibi-Price, Universite Laval, 2405 rue de la Terrasse, Quebec, QC G1V 0A6, Canada
Institute of Physico-Chemical and Biological Problems in Soil Science, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russian Federation
Sukachev Institute of Forest, Siberian Branch of Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Доп.точки доступа:
Genet, A.; Grabarnik, P.; Sekretenko, O.; Pothier, D.
Landslide-induced changes of soil physicochemical properties in Xitou, Central Taiwan
/ C. -H. Cheng [et al.] // Geoderma. - 2016. - Vol. 265. - P187-195, DOI 10.1016/j.geoderma.2015.11.028
. - ISSN 0016-7061
Кл.слова (ненормированные):
Exchangeable cations -- Pedology -- Soil morphology -- Soil organic carbon -- Total nitrogen -- Deposition -- Ecology -- Ecosystems -- Forestry -- Landslides -- Nitrogen -- Organic carbon -- pH -- Positive ions -- Revegetation -- Soil conservation -- Soil surveys -- Exchangeable cation -- Pedology -- Soil morphology -- Soil organic carbon -- Total nitrogen -- Soils
Аннотация: Steep mountain terrain, fractured geological environments, and intense precipitation events are primary factors that contribute to frequent landslides in mountainous regions. Landslides exert an immense impact on forest ecosystems and substantially change soil properties; understanding these changes is crucial to facilitating subsequent forest revegetation and management. In this study, the effects of landslide on soil physicochemical properties were investigated in a moist montane forest ecosystem in Xitou, Central Taiwan. We established a dataset comprised historical soil survey data obtained in 1976 and data from soil samples taken in 2012 at the same locations to compare differences in soil properties after landslide deposition, and also conducted soil sampling along a landslide/nonlandslide affected sequence to determine how the degree of landslide deposition affected soil physicochemical properties. The results indicated that rock fragment content, soil pH value, bulk density, inorganic carbon, and base saturation increased following landslide deposition and that severe landslide deposition caused more substantial increases. By contrast, the thicknesses of the O and A horizons, soil organic carbon, total nitrogen, and cation-exchange capacity significantly decreased following landslides; these decreases were more substantial with increasing degree of landslide deposition. Exchangeable potassium, calcium, magnesium, and available phosphorus content, however, were unaffected by landslide deposition. The results demonstrated that soil physicochemical properties were significantly altered after landslide deposition; these resultant changes, particularly in regard to high soil pH value, poor structure, and low soil organic carbon and total nitrogen, are expected to influence functions in forest ecosystems. © 2015 Elsevier B.V.
Scopus,
WOS
Держатели документа:
School of Forestry and Resource Conservation, National Taiwan University, Taipei, Taiwan
NTU Experimental Forest, National Taiwan University, Nantou, Taiwan
Institute of Forest SR RAS, Krasnoyarsk, Russian Federation
Доп.точки доступа:
Cheng, C.-H.; Hsiao, S.-C.; Huang, Y.-S.; Hung, C.-Y.; Pai, C.-W.; Chen, C.-P.; Menyailo, O. V.
Свободных экз. нет
Кл.слова (ненормированные):
Exchangeable cations -- Pedology -- Soil morphology -- Soil organic carbon -- Total nitrogen -- Deposition -- Ecology -- Ecosystems -- Forestry -- Landslides -- Nitrogen -- Organic carbon -- pH -- Positive ions -- Revegetation -- Soil conservation -- Soil surveys -- Exchangeable cation -- Pedology -- Soil morphology -- Soil organic carbon -- Total nitrogen -- Soils
Аннотация: Steep mountain terrain, fractured geological environments, and intense precipitation events are primary factors that contribute to frequent landslides in mountainous regions. Landslides exert an immense impact on forest ecosystems and substantially change soil properties; understanding these changes is crucial to facilitating subsequent forest revegetation and management. In this study, the effects of landslide on soil physicochemical properties were investigated in a moist montane forest ecosystem in Xitou, Central Taiwan. We established a dataset comprised historical soil survey data obtained in 1976 and data from soil samples taken in 2012 at the same locations to compare differences in soil properties after landslide deposition, and also conducted soil sampling along a landslide/nonlandslide affected sequence to determine how the degree of landslide deposition affected soil physicochemical properties. The results indicated that rock fragment content, soil pH value, bulk density, inorganic carbon, and base saturation increased following landslide deposition and that severe landslide deposition caused more substantial increases. By contrast, the thicknesses of the O and A horizons, soil organic carbon, total nitrogen, and cation-exchange capacity significantly decreased following landslides; these decreases were more substantial with increasing degree of landslide deposition. Exchangeable potassium, calcium, magnesium, and available phosphorus content, however, were unaffected by landslide deposition. The results demonstrated that soil physicochemical properties were significantly altered after landslide deposition; these resultant changes, particularly in regard to high soil pH value, poor structure, and low soil organic carbon and total nitrogen, are expected to influence functions in forest ecosystems. © 2015 Elsevier B.V.
Scopus,
WOS
Держатели документа:
School of Forestry and Resource Conservation, National Taiwan University, Taipei, Taiwan
NTU Experimental Forest, National Taiwan University, Nantou, Taiwan
Institute of Forest SR RAS, Krasnoyarsk, Russian Federation
Доп.точки доступа:
Cheng, C.-H.; Hsiao, S.-C.; Huang, Y.-S.; Hung, C.-Y.; Pai, C.-W.; Chen, C.-P.; Menyailo, O. V.
Свободных экз. нет
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)]
Altitudinal differentiation of acid-base properties of the river valley peat soils in the Kuznetsk Alatau
/ T. T. Efremova [и др.] // Vestn. Tomsk. Gos. Univ. Biol. - 2018. - Is. 41. - С. 135-155, DOI 10.17223/19988591/41/8
. - ISSN 1998-8591
Кл.слова (ненормированные):
Buffering -- Geochemical association -- Mountain peatlands -- multivariate statistical analysis -- Nonexchangeable acidity -- Salt pH -- Saturation with bases -- Water pH
Аннотация: In the complex structure of the vertical altitudinal zonality of the Altai-Sayan mountain country, peat soils were almost not represented. The aim of this research was to develop a topographic series of peat soils of the Kuznetsk Alatau. The studied peatlands were confined to the basins of the Belyi Iyus and the Chernyi Iyus rivers and located at different hypsometric levels of the relief on the Eastern slope of the Kuznetsk Alatau, at 1543, 1087, 832, 622, 579 and 547m above sea level (See Fig. 1). As a criterion of vertical structural organization of soil, we used acid-base properties: water pH (water extract), salt pH (extract of 1M KCl) and general potential - nonexchangeable acidity (extract of 1M CH3COONa). The determined value of acidity was multiplied by an empirical coefficient 1.75. The sum of exchangeable cations (by Kappen-Hilkovits) was found in the extract of 0.1M HCl, in which the Ca2++Mg2+ was determined by complexometric titration. According to the difference between the sum of exchangeable cations and Ca2++Mg2+, we identified the content of other (unidentified) cations. The degree of soil saturation with bases, expressed in %, was calculated as the proportion of exchangeable bases in 0.1M HCl solution to the sum (exchangeable bases + nonexchangeable acidity). The V-diagrams, constructed on the basis of water pH, salt pH and saturation of soil absorbing complex (SAC) with exchangeable calcium and magnesium, describe the acidic trace of soil formation and simulate the acidification of top soil horizons in the course of peat genesis (See Fig. 2). High-precision regression model was proposed for the prediction of exchangeble acidity value (pHKCl) by the value of active acidity (pHH2O).Using the methods of multivariate statistical analysis (discriminant, multidimensional scaling), we grouped peat soils into three clusters with acid-base characteristics. The parameter of SAC saturation by alkaline-earth cations and pH salt value makes the dominant contribution to the organization of peat soil clusters with a final prediction 89% (See Table 3, Fig. 4). In the structure of vertical soil zones of the Altai-Sayan mountain country, particularly of the Eastern slopes of the Kuznetsk Alatau, the geochemical associations (clusters) of peat soils were identified: a) acidic and unsaturated by calcium and magnesium (<30-50%) on the whole profile within the boundaries of alpine tundra and subalpine complexes at the altitude of 1500-1100 m; b) slightly acidic and slightly saturated with bases (50-70%) within the mountaintaiga zone of dark coniferous forests 1100-800 m a.s.; c) neutral and moderately saturated with alkaline-earth base (70-90%) associations of peat soils within the zone of subtaiga-forest-steppe 800-500 m a.s. (See Table 4). Chorological organization of peat soils is in accordance with the hydrochemical zoning of underground waters and high-zone structure of the vegetation cover at automorphic sites. However, in the forest zone of wetlands of the Kuznetsk Alatau eastern slope, regardless of acid-base properties of peat soils, spruce forests mainly form, reflecting the main characteristics of soil hydromorphism. In this regard, the status of indigenous groups of swamp spruce forests can be considered as sufficient objective criteria of a regional climate change towards dryness. © 2018 Tomsk State University. All rights reserved.
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Держатели документа:
Laboratory of Phytocoenology and Forest Resource Studies, VN Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Sciences, Federal Research Center, Krasnoyarsk Science Center SB RAS, Siberian Branch of the Russian Academy of Sciences, 50 Akademgorodok, bld. 28, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Efremova, T. T.; Efremov, S. P.; Melent'Eva, N. V.; Avrova, A. F.
Кл.слова (ненормированные):
Buffering -- Geochemical association -- Mountain peatlands -- multivariate statistical analysis -- Nonexchangeable acidity -- Salt pH -- Saturation with bases -- Water pH
Аннотация: In the complex structure of the vertical altitudinal zonality of the Altai-Sayan mountain country, peat soils were almost not represented. The aim of this research was to develop a topographic series of peat soils of the Kuznetsk Alatau. The studied peatlands were confined to the basins of the Belyi Iyus and the Chernyi Iyus rivers and located at different hypsometric levels of the relief on the Eastern slope of the Kuznetsk Alatau, at 1543, 1087, 832, 622, 579 and 547m above sea level (See Fig. 1). As a criterion of vertical structural organization of soil, we used acid-base properties: water pH (water extract), salt pH (extract of 1M KCl) and general potential - nonexchangeable acidity (extract of 1M CH3COONa). The determined value of acidity was multiplied by an empirical coefficient 1.75. The sum of exchangeable cations (by Kappen-Hilkovits) was found in the extract of 0.1M HCl, in which the Ca2++Mg2+ was determined by complexometric titration. According to the difference between the sum of exchangeable cations and Ca2++Mg2+, we identified the content of other (unidentified) cations. The degree of soil saturation with bases, expressed in %, was calculated as the proportion of exchangeable bases in 0.1M HCl solution to the sum (exchangeable bases + nonexchangeable acidity). The V-diagrams, constructed on the basis of water pH, salt pH and saturation of soil absorbing complex (SAC) with exchangeable calcium and magnesium, describe the acidic trace of soil formation and simulate the acidification of top soil horizons in the course of peat genesis (See Fig. 2). High-precision regression model was proposed for the prediction of exchangeble acidity value (pHKCl) by the value of active acidity (pHH2O).Using the methods of multivariate statistical analysis (discriminant, multidimensional scaling), we grouped peat soils into three clusters with acid-base characteristics. The parameter of SAC saturation by alkaline-earth cations and pH salt value makes the dominant contribution to the organization of peat soil clusters with a final prediction 89% (See Table 3, Fig. 4). In the structure of vertical soil zones of the Altai-Sayan mountain country, particularly of the Eastern slopes of the Kuznetsk Alatau, the geochemical associations (clusters) of peat soils were identified: a) acidic and unsaturated by calcium and magnesium (<30-50%) on the whole profile within the boundaries of alpine tundra and subalpine complexes at the altitude of 1500-1100 m; b) slightly acidic and slightly saturated with bases (50-70%) within the mountaintaiga zone of dark coniferous forests 1100-800 m a.s.; c) neutral and moderately saturated with alkaline-earth base (70-90%) associations of peat soils within the zone of subtaiga-forest-steppe 800-500 m a.s. (See Table 4). Chorological organization of peat soils is in accordance with the hydrochemical zoning of underground waters and high-zone structure of the vegetation cover at automorphic sites. However, in the forest zone of wetlands of the Kuznetsk Alatau eastern slope, regardless of acid-base properties of peat soils, spruce forests mainly form, reflecting the main characteristics of soil hydromorphism. In this regard, the status of indigenous groups of swamp spruce forests can be considered as sufficient objective criteria of a regional climate change towards dryness. © 2018 Tomsk State University. All rights reserved.
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Laboratory of Phytocoenology and Forest Resource Studies, VN Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Sciences, Federal Research Center, Krasnoyarsk Science Center SB RAS, Siberian Branch of the Russian Academy of Sciences, 50 Akademgorodok, bld. 28, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Efremova, T. T.; Efremov, S. P.; Melent'Eva, N. V.; Avrova, A. F.
Impact of forest fire on soil properties (Review)
/ A. A. Dymov [et al.] // Theor. Appl. Ecol. - 2018. - Vol. 2018, Is. 4. - P13-23, DOI 10.25750/1995-4301-2018-4-013-023
. - ISSN 1995-4301
Кл.слова (ненормированные):
Black carbon -- Fires -- Forest soils -- Secondary successions -- Soil organic matter
Аннотация: We examined changes in the morphological, physicochemical properties and features of the organic matter of forest soils impacted by wildfires on the territory of Russia. Morphological signs of pyrogenesis (pyrogenic horizon formation, partial charring of litter and illuviation of organic compounds) are most evident detected in the first decade after a fire. Ground fires in lichen pine forests, formed on Albic Podzols lead to complete burning of litter. Low intensity ground fires in sphagnum pine forests, developing on Histic Podzols, contribute to partial burning of litter (charring). Fires change the hydrothermal regime of soils, which is most clearly demonstrated for soils formed on permafrost soils / cryosols. Fires lead to hydrophobization of the upper mineral horizons, estimated from the contact angle of wetting. Resistant products of pyrogenesis (charcoals, soot) are retained in soils for several centuries. The most common changes in the physical and chemical properties of soils after fires are a decrease in acidity by 1–2 units of pH, an increase of saturation with base saturation. Fires increase aromaticity of soil organic matter. After fires, the content of polyaromatic hydrocarbons in soils increases, and the concentrations of water-soluble organic compounds decrease. Restoration of soil properties to the prefire state takes a decade to several centuries. The introduction of a universal subtype “pyrogenic” is proposed in describing the morphological characteristics of forest soils. © Publishing House O- Kratkoe. All rights reserved.
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Держатели документа:
Institute of Biology, Komi Science Centre, Ural Branch of RAS, 28, Kommunisticheskaya St., Syktyvkar, 167982, Russian Federation
Piritim Sorokin Syktyvkar State University, 55, Oktyabrskiy Prospect, Syktyvkar, 167000, Russian Federation
St. Petersburg State University, Department of Applied Ecology, 29, 16th Line, St. Petersburg, 199178, Russian Federation
Siberian Federal University, 79/10, Svobodny St., Krasnoyarsk, 660041, Russian Federation
Sukachev Institute of Forest Siberian Branch of RAS, 50/28, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Department of Soil Science of Temperate Ecosystems, Georg-August-Universitat Gottingen, 1, Wilhelmsplats, Gottingen, 37077, Germany
Lomonosov Moscow State University, 1, Leninskie Gory, Moscow, 119991, Russian Federation
Dokuchaev Soil Science Institute, 7, Pyzhevskiy Pereulok, Moscow, 119017, Russian Federation
Доп.точки доступа:
Dymov, A. A.; Abakumov, E. V.; Bezkorovaynaya, N.; Prokushkin, A. S.; Kuzyakov, V.; Milanovsky, E.
Кл.слова (ненормированные):
Black carbon -- Fires -- Forest soils -- Secondary successions -- Soil organic matter
Аннотация: We examined changes in the morphological, physicochemical properties and features of the organic matter of forest soils impacted by wildfires on the territory of Russia. Morphological signs of pyrogenesis (pyrogenic horizon formation, partial charring of litter and illuviation of organic compounds) are most evident detected in the first decade after a fire. Ground fires in lichen pine forests, formed on Albic Podzols lead to complete burning of litter. Low intensity ground fires in sphagnum pine forests, developing on Histic Podzols, contribute to partial burning of litter (charring). Fires change the hydrothermal regime of soils, which is most clearly demonstrated for soils formed on permafrost soils / cryosols. Fires lead to hydrophobization of the upper mineral horizons, estimated from the contact angle of wetting. Resistant products of pyrogenesis (charcoals, soot) are retained in soils for several centuries. The most common changes in the physical and chemical properties of soils after fires are a decrease in acidity by 1–2 units of pH, an increase of saturation with base saturation. Fires increase aromaticity of soil organic matter. After fires, the content of polyaromatic hydrocarbons in soils increases, and the concentrations of water-soluble organic compounds decrease. Restoration of soil properties to the prefire state takes a decade to several centuries. The introduction of a universal subtype “pyrogenic” is proposed in describing the morphological characteristics of forest soils. © Publishing House O- Kratkoe. All rights reserved.
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Держатели документа:
Institute of Biology, Komi Science Centre, Ural Branch of RAS, 28, Kommunisticheskaya St., Syktyvkar, 167982, Russian Federation
Piritim Sorokin Syktyvkar State University, 55, Oktyabrskiy Prospect, Syktyvkar, 167000, Russian Federation
St. Petersburg State University, Department of Applied Ecology, 29, 16th Line, St. Petersburg, 199178, Russian Federation
Siberian Federal University, 79/10, Svobodny St., Krasnoyarsk, 660041, Russian Federation
Sukachev Institute of Forest Siberian Branch of RAS, 50/28, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Department of Soil Science of Temperate Ecosystems, Georg-August-Universitat Gottingen, 1, Wilhelmsplats, Gottingen, 37077, Germany
Lomonosov Moscow State University, 1, Leninskie Gory, Moscow, 119991, Russian Federation
Dokuchaev Soil Science Institute, 7, Pyzhevskiy Pereulok, Moscow, 119017, Russian Federation
Доп.точки доступа:
Dymov, A. A.; Abakumov, E. V.; Bezkorovaynaya, N.; Prokushkin, A. S.; Kuzyakov, V.; Milanovsky, E.
631*415
Р 32
Р 32
РЕГРЕССИОННЫЕ МОДЕЛИ КИСЛОТНО-ОСНОВНЫХ СВОЙСТВ ТОРФЯНЫХ БОЛОТ КАК ОПЕРАТИВНЫЕ КРИТЕРИИ ИХ КЛАССИФИКАЦИИ ПО ХИМИЧЕСКОМУ ПРИНЦИПУ
[Текст] : статья / Тамара Тимофеевна Ефремова, Ада Федоровна Аврова // Сибирский экологический журнал. - 2019. - Т. 26, № 4. - С. 397-409, DOI 10.15372/SEJ20190403
. - ISSN 0869-8619
Перевод заглавия: REGRESSION MODELS OF ACID-BASE PROPERTIES OF PEAT SWAMPS AS OPERATIONAL CRITERIA FOR THEIR CHEMICAL CLASSIFICATION
Кл.слова (ненормированные):
болота -- торфяные почвы -- кислотность среды -- обменные основания -- диагностика -- парный регрессионный анализ -- swamps -- peat soil -- acidity -- exchange bases -- diagnostics -- paired regression analysis
Аннотация: По типу линейной функции установлены количественные связи активной кислотности (рН<sub>Н<sub>2</sub>О</sub>) торфяных почв с величиной обменной (рН<sub>KCl</sub>) и гидролитической (общей) кислотности, содержанием обменных катионов и щелочноземельных оснований, а также со степенью насыщенности основаниями. Приведены коэффициенты полученных уравнений регрессии. Доказаны высокие прогностические возможности регрессионных моделей на примере независимых данных. Применение регрессионных уравнений избавляет от выполнения трудоемких аналитических работ, что позволяет оперативно осуществлять классификацию болот и торфяных почв по химическому принципу - насыщенности щелочноземельными основаниями и величине рН. Индикаторная роль ботанического состава может заслуживать доверия при условии невысокой степени разложения торфа и специальных знаний морфологии и анатомии сфагновых мхов и сосудистых болотных растений.
The quantitative relationships of active acidity (pH<sub>H<sub>2</sub>O</sub>) of peat soils with the value of exchange acidity (pH<sub>KCl</sub>), nonexchangeble (total potential) acidity (1M CH<sub>3</sub>COONa extract), and the content of exchange cations and alkaline-earth bases, as well as the degree of bases saturation were established by the type of linear function. The coefficients of the regression equations are given. Using independent data, we proved the high predictive capability of regression models. Using the regression equations eliminates the time-consuming execution of analytical works, which allows to quickly classification the wetlands and peat soils on the chemical principle - saturation of alkaline-earth bases and pH value. The indicator role of the botanical composition may be credible provided the low peat decomposition degree and special knowledge of morphology and anatomy of sphagnum mosses and vascular bog plants.
РИНЦ,
SPRINGER
Держатели документа:
ИЛ СО РАН : 660036, Красноярск, Академгородок, 50, стр. 28
Доп.точки доступа:
Ефремова, Тамара Тимофеевна; Efremova T.T.; Аврова, Ада Федоровна; Avrova A.F.
Перевод заглавия: REGRESSION MODELS OF ACID-BASE PROPERTIES OF PEAT SWAMPS AS OPERATIONAL CRITERIA FOR THEIR CHEMICAL CLASSIFICATION
| УДК |
Кл.слова (ненормированные):
болота -- торфяные почвы -- кислотность среды -- обменные основания -- диагностика -- парный регрессионный анализ -- swamps -- peat soil -- acidity -- exchange bases -- diagnostics -- paired regression analysis
Аннотация: По типу линейной функции установлены количественные связи активной кислотности (рН<sub>Н<sub>2</sub>О</sub>) торфяных почв с величиной обменной (рН<sub>KCl</sub>) и гидролитической (общей) кислотности, содержанием обменных катионов и щелочноземельных оснований, а также со степенью насыщенности основаниями. Приведены коэффициенты полученных уравнений регрессии. Доказаны высокие прогностические возможности регрессионных моделей на примере независимых данных. Применение регрессионных уравнений избавляет от выполнения трудоемких аналитических работ, что позволяет оперативно осуществлять классификацию болот и торфяных почв по химическому принципу - насыщенности щелочноземельными основаниями и величине рН. Индикаторная роль ботанического состава может заслуживать доверия при условии невысокой степени разложения торфа и специальных знаний морфологии и анатомии сфагновых мхов и сосудистых болотных растений.
The quantitative relationships of active acidity (pH<sub>H<sub>2</sub>O</sub>) of peat soils with the value of exchange acidity (pH<sub>KCl</sub>), nonexchangeble (total potential) acidity (1M CH<sub>3</sub>COONa extract), and the content of exchange cations and alkaline-earth bases, as well as the degree of bases saturation were established by the type of linear function. The coefficients of the regression equations are given. Using independent data, we proved the high predictive capability of regression models. Using the regression equations eliminates the time-consuming execution of analytical works, which allows to quickly classification the wetlands and peat soils on the chemical principle - saturation of alkaline-earth bases and pH value. The indicator role of the botanical composition may be credible provided the low peat decomposition degree and special knowledge of morphology and anatomy of sphagnum mosses and vascular bog plants.
РИНЦ,
SPRINGER
Держатели документа:
ИЛ СО РАН : 660036, Красноярск, Академгородок, 50, стр. 28
Доп.точки доступа:
Ефремова, Тамара Тимофеевна; Efremova T.T.; Аврова, Ада Федоровна; Avrova A.F.
Formal Criteria for the Humus Status of Mountainous Peat Soils in Altitudinal Zones
/ T. T. Efremova [et al.] // Eurasian Soil Sci. - 2019. - Vol. 52, Is. 8. - P892-902, DOI 10.1134/S1064229319080076. - Cited References:46
. - ISSN 1064-2293. - ISSN 1556-195X
РУБ Soil Science
Аннотация: Cryogenic oligotrophic (Hyperdystric Cryic Fibric Histosols), oligomesotrophic (Dystric Fibric Histosols), mesoeutrophic (Oligeoeutric Fibric Histosols), and eutrophic (Hypereutric Fibric Histosols) peat soils were studied on the eastern slopes of the Kuznetsk Alatau Ridge (Republic of Khakassia). Their altitudinal differentiation was examined, and clustering according to the qualitative and quantitative composition of organic matter was performed. The most informative indicators of similarity and/or differences between the clusters were suggested. The group composition of organic matter was analyzed using acid and alkaline extractions. Multivariate statistical analyses (cluster, discriminant, and canonic) were applied for evaluation of the humus status. Indicators of organic matter status, which are significant for discrimination form two discriminant functions. Function 1 discriminates between the clusters (80%) and includes the indicators characterizing the depths of peat soil transformation: humification degree ( n-ary sumation HA + n-ary sumation FA), type of humus (C-HA/C-FA ratio), and ratio between the fractions of humic acids extracted by 0.02 N NaOH and 0.1 N NaOH (C-0.02 n NaOH/C-0.1 n NaOH). Function 1 clearly separates clusters of permafrost-affected oligotrophic peat soils of the alpine tundra zone (>1460 m a.s.l.) from oligo-mesotrophic peat soils of the subalpine zone (1087 m a.s.l.). Function 2 discriminates (at the 16% difference level) the clusters of peat soils of the forest zone-meso-eutrophic peat soils of the taiga zone (832 m a.s.l.) and eutrophic peat soils of the subtaiga-forest-steppe zone (622-573 m a.s.l.); it also includes hemicellulose and cellulose-characteristics of the initial state of peat-forming plants. The humus status of the mountainous peat soils corresponds to their diagnostics according to the base saturation and pH criteria and reflects a general pedogenetic trend in mountains: an increase in the humus content in soils with the altitude, which was earlier shown for mineral soils.
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Держатели документа:
Russian Acad Sci, Sukachev Inst Forestry, Siberian Branch, Krasnoyarsk 660036, Russia.
Доп.точки доступа:
Efremova, T. T.; Efremov, S. P.; Melent'eva, N. V.; Avrova, A. F.
Рубрики:
ORGANIC-MATTER
FOREST
Кл.слова (ненормированные):
mountainous peat soils -- organic matter -- diagnostics -- formalized -- classification -- multivariate statistical analysis
ORGANIC-MATTER
FOREST
Кл.слова (ненормированные):
mountainous peat soils -- organic matter -- diagnostics -- formalized -- classification -- multivariate statistical analysis
Аннотация: Cryogenic oligotrophic (Hyperdystric Cryic Fibric Histosols), oligomesotrophic (Dystric Fibric Histosols), mesoeutrophic (Oligeoeutric Fibric Histosols), and eutrophic (Hypereutric Fibric Histosols) peat soils were studied on the eastern slopes of the Kuznetsk Alatau Ridge (Republic of Khakassia). Their altitudinal differentiation was examined, and clustering according to the qualitative and quantitative composition of organic matter was performed. The most informative indicators of similarity and/or differences between the clusters were suggested. The group composition of organic matter was analyzed using acid and alkaline extractions. Multivariate statistical analyses (cluster, discriminant, and canonic) were applied for evaluation of the humus status. Indicators of organic matter status, which are significant for discrimination form two discriminant functions. Function 1 discriminates between the clusters (80%) and includes the indicators characterizing the depths of peat soil transformation: humification degree ( n-ary sumation HA + n-ary sumation FA), type of humus (C-HA/C-FA ratio), and ratio between the fractions of humic acids extracted by 0.02 N NaOH and 0.1 N NaOH (C-0.02 n NaOH/C-0.1 n NaOH). Function 1 clearly separates clusters of permafrost-affected oligotrophic peat soils of the alpine tundra zone (>1460 m a.s.l.) from oligo-mesotrophic peat soils of the subalpine zone (1087 m a.s.l.). Function 2 discriminates (at the 16% difference level) the clusters of peat soils of the forest zone-meso-eutrophic peat soils of the taiga zone (832 m a.s.l.) and eutrophic peat soils of the subtaiga-forest-steppe zone (622-573 m a.s.l.); it also includes hemicellulose and cellulose-characteristics of the initial state of peat-forming plants. The humus status of the mountainous peat soils corresponds to their diagnostics according to the base saturation and pH criteria and reflects a general pedogenetic trend in mountains: an increase in the humus content in soils with the altitude, which was earlier shown for mineral soils.
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Держатели документа:
Russian Acad Sci, Sukachev Inst Forestry, Siberian Branch, Krasnoyarsk 660036, Russia.
Доп.точки доступа:
Efremova, T. T.; Efremov, S. P.; Melent'eva, N. V.; Avrova, A. F.
Regression Models of Acid-Base Properties of Peat Swamps as Operational Criteria for Their Chemical Classification
/ T. T. Efremova, A. F. Avrova // Contemp. Probl. Ecol. - 2019. - Vol. 12, Is. 4. - P321-331, DOI 10.1134/S1995425519040024. - Cited References:20. - This study was performed in the framework of base project VI.52.2.1. "Biodiversity of Primary Coniferous and Secondary Forest Ecosystems" (no. 0356-2016-0301).
. - ISSN 1995-4255. - ISSN 1995-4263
РУБ Ecology
Аннотация: Quantitative relationships between the active acidity of peat soils on the one hand and their exchange acidity (pH(KCl)), nonexchangeble (total potential) acidity (1M CH3COONa extract), contents of exchange cations and alkaline-earth bases, and base saturation degree, on the other hand, have been identified in the form of a linear function. Coefficients of the resultant regression equations are provided. The high predictive capability of the produced regression models is proven using independent data as examples. The use of regression equations eliminates the need for time-consuming chemical analytical works, thus making it possible to operatively classify wetlands and peat soils on the basis on their chemical properties: saturation with alkaline-earth bases and pH value. The botanical composition may also be used as a reliable indicator, provided that the degree of peat decomposition is low and subject to special knowledge of morphology and anatomy of sphagnum mosses and vascular swamp plants.
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Держатели документа:
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, West Siberian Dept,Sukachev Inst Forest,Fed Res C, Krasnoyarsk 660036, Russia.
Доп.точки доступа:
Efremova, T. T.; Avrova, A. F.; [VI.52.2.1]; [0356-2016-0301]
Рубрики:
SOILS
Кл.слова (ненормированные):
swamps -- peat soils -- acidity -- exchange bases -- diagnostics -- paired -- regression analysis
SOILS
Кл.слова (ненормированные):
swamps -- peat soils -- acidity -- exchange bases -- diagnostics -- paired -- regression analysis
Аннотация: Quantitative relationships between the active acidity of peat soils on the one hand and their exchange acidity (pH(KCl)), nonexchangeble (total potential) acidity (1M CH3COONa extract), contents of exchange cations and alkaline-earth bases, and base saturation degree, on the other hand, have been identified in the form of a linear function. Coefficients of the resultant regression equations are provided. The high predictive capability of the produced regression models is proven using independent data as examples. The use of regression equations eliminates the need for time-consuming chemical analytical works, thus making it possible to operatively classify wetlands and peat soils on the basis on their chemical properties: saturation with alkaline-earth bases and pH value. The botanical composition may also be used as a reliable indicator, provided that the degree of peat decomposition is low and subject to special knowledge of morphology and anatomy of sphagnum mosses and vascular swamp plants.
WOS,
Смотреть статью,
Scopus
Держатели документа:
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, West Siberian Dept,Sukachev Inst Forest,Fed Res C, Krasnoyarsk 660036, Russia.
Доп.точки доступа:
Efremova, T. T.; Avrova, A. F.; [VI.52.2.1]; [0356-2016-0301]
631.417.2;631.445.12
Е 92
Е 92
ФОРМАЛИЗОВАННЫЙ АНАЛИЗ ГУМУСНОГО СОСТОЯНИЯ ГОРНЫХ ТОРФЯНЫХ ПОЧВ НА УРОВНЕ ВЫСОТНЫХ ПОЯСОВ
[Текст] : статья / Т. Т. Ефремова, С. П. Ефремов, Н. В. Мелентьева, А. Ф. Аврова // Почвоведение. - 2019. - № 8. - С. 923-934, DOI 10.1134/S0032180X19080070
. - ISSN 0032-180X
Перевод заглавия: Formal Criteria of the Humus Status of Mountainous Peat Soilsat the Level of Altitudinal Zones
Кл.слова (ненормированные):
ГОРНЫЕ ТОРФЯНЫЕ ПОЧВЫ -- ОРГАНИЧЕСКОЕ ВЕЩЕСТВО -- ДИАГНОСТИКА -- ФОРМАЛИЗОВАННАЯ КЛАССИФИКАЦИЯ -- МНОГОМЕРНЫЙ СТАТИСТИЧЕСКИЙ АНАЛИЗ -- MOUNTAINOUS PEAT SOILS -- ORGANIC MATTER -- DIAGNOSTICS -- FORMALIZED CLASSIFICATION -- MULTIVARIATE STATISTICAL ANALYSIS
Аннотация: Исследован качественный и количественный состав органического вещества горных торфяных почв криогенных олиготрофных (Hyperdystric Cryic Histosols), олиго-мезотрофных (Orthodystric Histosols), мезо-эутрофных (Oligeoeutric Histosols) и эутрофных (Hypereutric Histosols) восточного макросклона Кузнецкого Алатау (республика Хакасия). Изучена высотно-поясная дифференциация и выполнена объективная группировка (кластеризация) торфяных почв по гумусному состоянию, установлены наиболее информативные признаки сходства и/или различия кластеров. Проведены последовательный анализ группового состава органического вещества методом кислотной и щелочной экстракции, оценка по системе показателей гумусного состояния почв, многомерный статистический анализ (кластерный, дискриминантный, канонический). Значимые для дискриминации показатели состояния органического вещества формируют две дискриминантные функции. Первая обладает наибольшими дискриминирующими возможностями различать кластеры (80%) и включает показатели, которые характеризуют глубину преобразования торфяных почв: степень гумификации (∑ГК + ∑ФК), тип гумуса (отношение СГК/СФК), соотношение фракций гумусовых веществ (С0.02 н NaOH/C0.1 н NaOH). Функцией 1 дискриминируются кластеры торфяных почв высокогорья: мерзлотные олиготрофные альпийско-тундрового пояса (1460 м над ур. м.) и олиго-мезотрофные субальпийского пояса (1087 м). Вторая дискриминантная функция обеспечивает меньшую долю различия (16%) и включает показатели исходного состояния растений-торфообразователей: гемицеллюлозы и целлюлоза. Функцией 2 дискриминируются кластеры торфяных почв лесного пояса: мезоэутрофные горно-таежного пояса (832 м) и эутрофные подтаежно-лесостепного пояса (622–573 м над ур. м.). Гумусное состояние горных торфяных почв соответствует их диагностике по принципу насыщенности основаниями и величине рН, а также отражает общие признаки горного почвообразования – увеличение гумусированности с высотой, установленной ранее для почв минерального ряда
Cryogenic oligotrophic (Hyperdystric Cryic Fibric Histosols), oligo-mesotrophic (Dystric Fibric Histosols), meso-eutrophic (Oligeoeutric Fibric Histosols), and eutrophic (Hypereutric Fibric Histosols) peat soils on the eastern slopes of the Kuznetsk Alatau Ridge (Khakassia Republic) were studied. Their altitudinal differentiation was examined, and their clustering according to qualitative and quantitative composition of organic matter was performed. The most informative indicators of similarity and/or differences of the clusters were suggested. The group composition of organic matter was studied using acid and alkaline extractions. Multivariate statistical analyses (cluster, discriminant, and canonic) were applied for evaluation of the humus state of soils. Significant indicators of the organic matter status form two discriminant functions. Function 1 discriminates between the clusters (80%) and includes the following indicators: humification degree (∑HA + ∑FA), type of humus (Cha/Cfa ratio), and ratio between the fractions of humic acids extracted by 0.02 N and 0.1 N NaOH (С0.02N NaOH/C0.1N NaOH). Function 1 clearly separates permafrost-affected oligotrophic peat soils of the tundra zone (>1460 m a.s.l.) from oligo-mesotrophic peat soils of the subalpine zone (1087 m a.s.l.). Function 2 discriminates between the clusters of peat soils of the forest zone—meso-eutrophic peat soils of the taiga zone (832 m a.s.l.) and eutrophic peat soils of the subtaiga–forest-steppe zone (622–573 m a.s.l.) at the 16% difference level. The humus status of the mountainous peat soils corresponds to their diagnostics according to the base saturation and pH criteria and reflects a general tendency for an increase in the soil humus content at higher altitudes, which has earlier been shown the mineral soils
Статья в РИНЦ
Держатели документа:
ИЛ СО РАН : 660036, Красноярск, Академгородок, 50, стр. 28
Доп.точки доступа:
Ефремова, Тамара Тимофеевна; Ефремов, Станислав Петрович; Yefryemov S.P.; Мелентьева, Надежда Васильевна; Melent'yeva Nadezhda Vasil'yevna; Аврова, Ада Федоровна; Avrova Ada Fyedorovna; Efremova T.T.
Перевод заглавия: Formal Criteria of the Humus Status of Mountainous Peat Soilsat the Level of Altitudinal Zones
| УДК |
Кл.слова (ненормированные):
ГОРНЫЕ ТОРФЯНЫЕ ПОЧВЫ -- ОРГАНИЧЕСКОЕ ВЕЩЕСТВО -- ДИАГНОСТИКА -- ФОРМАЛИЗОВАННАЯ КЛАССИФИКАЦИЯ -- МНОГОМЕРНЫЙ СТАТИСТИЧЕСКИЙ АНАЛИЗ -- MOUNTAINOUS PEAT SOILS -- ORGANIC MATTER -- DIAGNOSTICS -- FORMALIZED CLASSIFICATION -- MULTIVARIATE STATISTICAL ANALYSIS
Аннотация: Исследован качественный и количественный состав органического вещества горных торфяных почв криогенных олиготрофных (Hyperdystric Cryic Histosols), олиго-мезотрофных (Orthodystric Histosols), мезо-эутрофных (Oligeoeutric Histosols) и эутрофных (Hypereutric Histosols) восточного макросклона Кузнецкого Алатау (республика Хакасия). Изучена высотно-поясная дифференциация и выполнена объективная группировка (кластеризация) торфяных почв по гумусному состоянию, установлены наиболее информативные признаки сходства и/или различия кластеров. Проведены последовательный анализ группового состава органического вещества методом кислотной и щелочной экстракции, оценка по системе показателей гумусного состояния почв, многомерный статистический анализ (кластерный, дискриминантный, канонический). Значимые для дискриминации показатели состояния органического вещества формируют две дискриминантные функции. Первая обладает наибольшими дискриминирующими возможностями различать кластеры (80%) и включает показатели, которые характеризуют глубину преобразования торфяных почв: степень гумификации (∑ГК + ∑ФК), тип гумуса (отношение СГК/СФК), соотношение фракций гумусовых веществ (С0.02 н NaOH/C0.1 н NaOH). Функцией 1 дискриминируются кластеры торфяных почв высокогорья: мерзлотные олиготрофные альпийско-тундрового пояса (1460 м над ур. м.) и олиго-мезотрофные субальпийского пояса (1087 м). Вторая дискриминантная функция обеспечивает меньшую долю различия (16%) и включает показатели исходного состояния растений-торфообразователей: гемицеллюлозы и целлюлоза. Функцией 2 дискриминируются кластеры торфяных почв лесного пояса: мезоэутрофные горно-таежного пояса (832 м) и эутрофные подтаежно-лесостепного пояса (622–573 м над ур. м.). Гумусное состояние горных торфяных почв соответствует их диагностике по принципу насыщенности основаниями и величине рН, а также отражает общие признаки горного почвообразования – увеличение гумусированности с высотой, установленной ранее для почв минерального ряда
Cryogenic oligotrophic (Hyperdystric Cryic Fibric Histosols), oligo-mesotrophic (Dystric Fibric Histosols), meso-eutrophic (Oligeoeutric Fibric Histosols), and eutrophic (Hypereutric Fibric Histosols) peat soils on the eastern slopes of the Kuznetsk Alatau Ridge (Khakassia Republic) were studied. Their altitudinal differentiation was examined, and their clustering according to qualitative and quantitative composition of organic matter was performed. The most informative indicators of similarity and/or differences of the clusters were suggested. The group composition of organic matter was studied using acid and alkaline extractions. Multivariate statistical analyses (cluster, discriminant, and canonic) were applied for evaluation of the humus state of soils. Significant indicators of the organic matter status form two discriminant functions. Function 1 discriminates between the clusters (80%) and includes the following indicators: humification degree (∑HA + ∑FA), type of humus (Cha/Cfa ratio), and ratio between the fractions of humic acids extracted by 0.02 N and 0.1 N NaOH (С0.02N NaOH/C0.1N NaOH). Function 1 clearly separates permafrost-affected oligotrophic peat soils of the tundra zone (>1460 m a.s.l.) from oligo-mesotrophic peat soils of the subalpine zone (1087 m a.s.l.). Function 2 discriminates between the clusters of peat soils of the forest zone—meso-eutrophic peat soils of the taiga zone (832 m a.s.l.) and eutrophic peat soils of the subtaiga–forest-steppe zone (622–573 m a.s.l.) at the 16% difference level. The humus status of the mountainous peat soils corresponds to their diagnostics according to the base saturation and pH criteria and reflects a general tendency for an increase in the soil humus content at higher altitudes, which has earlier been shown the mineral soils
Статья в РИНЦ
Держатели документа:
ИЛ СО РАН : 660036, Красноярск, Академгородок, 50, стр. 28
Доп.точки доступа:
Ефремова, Тамара Тимофеевна; Ефремов, Станислав Петрович; Yefryemov S.P.; Мелентьева, Надежда Васильевна; Melent'yeva Nadezhda Vasil'yevna; Аврова, Ада Федоровна; Avrova Ada Fyedorovna; Efremova T.T.
LandRS: A Virtual Constellation Simulator for InSAR, LiDAR Waveform and Stereo Imagery over Mountainous Forest Landscapes
/ W. Ni, G. Sun, K. J. Ranson [et al.] // International Geoscience and Remote Sensing Symposium (IGARSS) : Institute of Electrical and Electronics Engineers Inc., 2019. - 39th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2019 (28 July 2019 through 2 August 2019, ) Conference code: 154792. - P4892-4895, DOI 10.1109/IGARSS.2019.8898106
. -
Кл.слова (ненормированные):
AGB -- biomass -- forest -- InSAR -- LandLidar -- LandSAR -- LandStereo -- lidar -- stereo -- waveform
Аннотация: The accurate mapping of forest AGB using remote sensing dataset is hindered by the saturation problem and the terrain effects. Direct measurement of forest spatial structures and terrains should be the solutions of these problems. However, the information of forest vertical structure and ground surface terrain are always mixed together in remote sensing datasets which can directly measure the elevations of ground objects. One potential way is to separate them is to synthesize InSAR, stereo imagery and lidar waveform. Theoretical model is needed for this effort. In this study, a unified model was presented, which can be used to simulate InSAR, stereo imagery and lidar waveforms over mountainous forest landscapes. © 2019 IEEE.
Scopus
Держатели документа:
Institute of Remote Sensing Applications of Chinese Academy of Sciences, State Key Laboratory of Remote Sensing Science, Beijing, 100101, China
Department of Geographical Sciences, University of Maryland, College Park, MD 20742, United States
Biospheric Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771, United States
Science Systems and Applications, Inc., 10210 Greenbelt Road, Lanham, MD 20706, United States
Institute of Forest Resource Information Technique, Chinese Academy of Forestry, Beijing, 100091, China
VN Sukachev Institute of Forest, Siberian Federal University, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Ni, W.; Sun, G.; Ranson, K. J.; Montesano, P.; Liu, Q.; Li, Z.; Kharuk, V. I.; Zhang, Z.
Кл.слова (ненормированные):
AGB -- biomass -- forest -- InSAR -- LandLidar -- LandSAR -- LandStereo -- lidar -- stereo -- waveform
Аннотация: The accurate mapping of forest AGB using remote sensing dataset is hindered by the saturation problem and the terrain effects. Direct measurement of forest spatial structures and terrains should be the solutions of these problems. However, the information of forest vertical structure and ground surface terrain are always mixed together in remote sensing datasets which can directly measure the elevations of ground objects. One potential way is to separate them is to synthesize InSAR, stereo imagery and lidar waveform. Theoretical model is needed for this effort. In this study, a unified model was presented, which can be used to simulate InSAR, stereo imagery and lidar waveforms over mountainous forest landscapes. © 2019 IEEE.
Scopus
Держатели документа:
Institute of Remote Sensing Applications of Chinese Academy of Sciences, State Key Laboratory of Remote Sensing Science, Beijing, 100101, China
Department of Geographical Sciences, University of Maryland, College Park, MD 20742, United States
Biospheric Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771, United States
Science Systems and Applications, Inc., 10210 Greenbelt Road, Lanham, MD 20706, United States
Institute of Forest Resource Information Technique, Chinese Academy of Forestry, Beijing, 100091, China
VN Sukachev Institute of Forest, Siberian Federal University, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Ni, W.; Sun, G.; Ranson, K. J.; Montesano, P.; Liu, Q.; Li, Z.; Kharuk, V. I.; Zhang, Z.
LANDRS: A VIRTUAL CONSTELLATION SIMULATOR FOR INSAR, LIDAR WAVEFORM AND STEREO IMAGERY OVER MOUNTAINOUS FOREST LANDSCAPES
/ W. J. Ni, G. Q. Sun, K. J. Ranson [et al.] // 2019 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS : IEEE, 2019. - IEEE International Geoscience and Remote Sensing Symposium (IGARSS) (JUL 28-AUG 02, 2019, Yokohama, JAPAN). - P4892-4895. - (IEEE International Symposium on Geoscience and Remote Sensing IGARSS). - Cited References:15. - This study is sponsored by National Key R&D Program of China (2017YFA0603002), National Natural Science Foundation of China (Grant No. 41471311), National Basic Research Program of China (Grant No. 2013CB733401, 2013CB733404).
. -
РУБ Geosciences, Multidisciplinary + Remote Sensing
Аннотация: The accurate mapping of forest AGB using remote sensing dataset is hindered by the saturation problem and the terrain effects. Direct measurement of forest spatial structures and terrains should be the solutions of these problems. However, the information of forest vertical structure and ground surface terrain are always mixed together in remote sensing datasets which can directly measure the elevations of ground objects. One potential way is to separate them is to synthesize InSAR, stereo imagery and lidar waveform. Theoretical model is needed for this effort. In this study, a unified model was presented, which can be used to simulate InSAR, stereo imagery and lidar waveforms over mountainous forest landscapes.
WOS
Держатели документа:
Chinese Acad Sci, Inst Remote Sensing Applicat, State Key Lab Remote Sensing Sci, Beijing 100101, Peoples R China.
Univ Maryland, Dept Geog Sci, College Pk, MD 20742 USA.
NASA, Biospher Sci Lab, Goddard Space Flight Ctr, Code 618, Greenbelt, MD 20771 USA.
Sci Syst & Applicat Inc, 10210 Greenbelt Rd, Lanham, MD 20706 USA.
Chinese Acad Forestry, Inst Forest Resource Informat Tech, Beijing 100091, Peoples R China.
Siberian Fed Univ, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia.
Доп.точки доступа:
Ni, Wenjian; Sun, Guoqing; Ranson, Kenneth Jon; Montesano, Paul; Liu, Qinhuo; Li, Zengyuan; Kharuk, Vyacheslav I.; Zhang, Zhiyu; National Key R&D Program of China [2017YFA0603002]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China [41471311]; National Basic Research Program of ChinaNational Basic Research Program of China [2013CB733401, 2013CB733404]
Рубрики:
RADAR BACKSCATTER MODEL
MICROWAVE BACKSCATTERING
L-BAND
Кл.слова (ненормированные):
InSAR -- stereo -- lidar -- waveform -- LandSAR -- LandStereo -- LandLidar -- forest -- biomass -- AGB
RADAR BACKSCATTER MODEL
MICROWAVE BACKSCATTERING
L-BAND
Кл.слова (ненормированные):
InSAR -- stereo -- lidar -- waveform -- LandSAR -- LandStereo -- LandLidar -- forest -- biomass -- AGB
Аннотация: The accurate mapping of forest AGB using remote sensing dataset is hindered by the saturation problem and the terrain effects. Direct measurement of forest spatial structures and terrains should be the solutions of these problems. However, the information of forest vertical structure and ground surface terrain are always mixed together in remote sensing datasets which can directly measure the elevations of ground objects. One potential way is to separate them is to synthesize InSAR, stereo imagery and lidar waveform. Theoretical model is needed for this effort. In this study, a unified model was presented, which can be used to simulate InSAR, stereo imagery and lidar waveforms over mountainous forest landscapes.
WOS
Держатели документа:
Chinese Acad Sci, Inst Remote Sensing Applicat, State Key Lab Remote Sensing Sci, Beijing 100101, Peoples R China.
Univ Maryland, Dept Geog Sci, College Pk, MD 20742 USA.
NASA, Biospher Sci Lab, Goddard Space Flight Ctr, Code 618, Greenbelt, MD 20771 USA.
Sci Syst & Applicat Inc, 10210 Greenbelt Rd, Lanham, MD 20706 USA.
Chinese Acad Forestry, Inst Forest Resource Informat Tech, Beijing 100091, Peoples R China.
Siberian Fed Univ, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia.
Доп.точки доступа:
Ni, Wenjian; Sun, Guoqing; Ranson, Kenneth Jon; Montesano, Paul; Liu, Qinhuo; Li, Zengyuan; Kharuk, Vyacheslav I.; Zhang, Zhiyu; National Key R&D Program of China [2017YFA0603002]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China [41471311]; National Basic Research Program of ChinaNational Basic Research Program of China [2013CB733401, 2013CB733404]
Pedogenetic and Geographic Features of Granuzems
/ Y. I. Yershov // Eurasian Soil Sci. - 2021. - Vol. 54, Is. 5. - P653-664, DOI 10.1134/S1064229321050070. - Cited References:38
. - ISSN 1064-2293. - ISSN 1556-195X
РУБ Soil Science
Кл.слова (ненормированные):
Subarctic -- Central Siberian Plateau -- mafic rocks -- glaciofluvial -- deposits -- rounded-grain aggregation -- soil classification
Аннотация: At present, the genesis, nomenclature, and classification of granuzems remain debatable, which is explained by scarce data on these soils. In this paper, data on granuzems described in the forest-tundra of the Norilsk depression, in the valleys of the Tukalanda, Akkit, and Khantaika rivers (68 degrees 30 ' N, 88 degrees 15 ' E) and in the northern taiga within the lower reaches of the Nizhnyaya Tunguska River (66 degrees 20 ' N, 89 degrees 00 ' E) are discussed. Genetic and geographic features of granuzems are closely related to the mineralogy and texture of their parent materials represented by moraine and glaciofluvial loamy and clayey sediments derived from quartz-containing dolerites. Granuzems are characterized by the strongly acid or acid to neutral reaction and, accordingly, by the low base saturation in the upper horizons and moderate base saturation in the lower horizons. Granuzems are characterized by the elevated content of humus of the fulvate composition (C-ha/C-fa < 1) and by the high content of oxalate-extractable iron. The main soil-forming processes are weathering and aggregation of the coagulative cryochemogenic nature. The horizon with strong rounded-grain or crumb-granular structure serves as a diagnostic horizon of granuzems. The surface litter horizon may have different thickness and decomposition degree.
WOS
Держатели документа:
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Sukachev Inst Forest, Akademgorodok 50-28, Krasnoyarsk 660036, Russia.
Доп.точки доступа:
Yershov, Yu, I
Кл.слова (ненормированные):
Subarctic -- Central Siberian Plateau -- mafic rocks -- glaciofluvial -- deposits -- rounded-grain aggregation -- soil classification
Аннотация: At present, the genesis, nomenclature, and classification of granuzems remain debatable, which is explained by scarce data on these soils. In this paper, data on granuzems described in the forest-tundra of the Norilsk depression, in the valleys of the Tukalanda, Akkit, and Khantaika rivers (68 degrees 30 ' N, 88 degrees 15 ' E) and in the northern taiga within the lower reaches of the Nizhnyaya Tunguska River (66 degrees 20 ' N, 89 degrees 00 ' E) are discussed. Genetic and geographic features of granuzems are closely related to the mineralogy and texture of their parent materials represented by moraine and glaciofluvial loamy and clayey sediments derived from quartz-containing dolerites. Granuzems are characterized by the strongly acid or acid to neutral reaction and, accordingly, by the low base saturation in the upper horizons and moderate base saturation in the lower horizons. Granuzems are characterized by the elevated content of humus of the fulvate composition (C-ha/C-fa < 1) and by the high content of oxalate-extractable iron. The main soil-forming processes are weathering and aggregation of the coagulative cryochemogenic nature. The horizon with strong rounded-grain or crumb-granular structure serves as a diagnostic horizon of granuzems. The surface litter horizon may have different thickness and decomposition degree.
WOS
Держатели документа:
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Sukachev Inst Forest, Akademgorodok 50-28, Krasnoyarsk 660036, Russia.
Доп.точки доступа:
Yershov, Yu, I
Геохимические особенности морфометрических фракций торфянистых подстилок в южнотаежных болотных березняках Западной Сибири
[Текст] / Т. Т. Ефремова, С. П. Ефремов, А. Ф. Аврова // Лесоведение. - 2023. - № 3. - С. 290-303, DOI 10.31857/S002411482303004X
. - ISSN 0024-1148
Кл.слова (ненормированные):
мезотрофные березняки -- дериваты -- макро- и микроэлементы -- гумусное состояние -- суммарный показатель загрязнения -- многомерный статистический анализ
Аннотация: Изучались торфянистые подстилки мохово-древесного состава в насаждениях березы пушистой (Betula pubescens Ehrh.) травяно-мшистых групп типов леса в северной части междуречья Оби и Томи (географические координаты 56°23′186″ с.ш., 084°32′519″ в.д.). Подстилки характеризуются слабой насыщенностью основаниями – 35.6%, кислой реакцией среды – pHH2O 4.0, зольностью – 8.9%. Среднее содержание макро- и микроэлементов образует следующий нисходящий ряд, мг/кг: Сa5105 > > Fe4201 > Al3614 > K986 > Mg893 > Mn468 > Sr230 > Na153 > Zn51 >Pb13 > Cu6.8 > Ni5 > Cr4.6 > Co2.9 > Cd0.2. Согласно факторному анализу, состав минеральной компоненты подстилок в процессе деструкции растительных остатков на 57% определяется изменчивостью содержания тяжёлых металлов, на 37% – щелочных, щелочноземельных, Zn, Cd. Методом древовидной кластеризации морфометрические фракции растительных фрагментов (дериваты) организовались следующим образом: >10 мм, [(10–5) + + (5–3) + (3–2) + (2–1)] и [(1–0.5) + (0.5–0.25) + <0.25] мм. Дискриминантный анализ показал 100% попадание в соответствующую группу. Наибольший вклад в предсказание вносят Al и Са. По мере распада растительных фрагментов тяжелые металлы и алюминий последовательно накапливаются, щелочные и щелочноземельные металлы вымываются и наиболее активно – на стадии ферментации. Распределение минеральных компонентов в дериватах подстилок согласуется с их гумусным состоянием. В мелких морфометрических фракциях по сравнению с крупными фрагментами расширяется отношение (∑ГК + ∑ФК)/полисахариды, сужается величина С/N, накапливаются гуминовые и фульвокислоты главным образом 1-й фракции. Торфянистые подстилки характеризуются средним, умеренно опасным уровнем загрязнения: суммарный показатель загрязнения (Zc) – 18. В составе токсикантов доминируют Pb, Zn – химические элементы I класса опасности
Peat litter of moss-woody composition was studied in swamp birch (Betula pubescens Ehrh.) forests of the grass-mossy forest types in the northern part of the Ob and Tom interfluve (geographical coordinates N 56°23′186″, E 084°32′519″). The litter samples are characterized by a low base saturation of 35.6%; an acidic reaction (pHH2O 4.0); and an ash content of 8.9%. The average content of macro- and microelements forms the following descending series, mg/kg: Ca5105 > Fe4201 > Al3614 > K986 > Mg893 > Mn468 > Sr230 > Na153 > > Zn51 > Pb13 > Cu6.8 > Ni5 > Cr4.6 > Co2.9 > Cd0.2. According to the factor analysis, the mineral component composition of the litter during the plant residues destruction is 57% determined by the variability of the heavy metals content, 37% by the content of alkali, alkaline earth, Zn and Cd. Using the tree clustering method, the morphometric fractions of plant fragments (derivatives) were organized as follows: >10 mm, [(10–5) + + (5–3) + (3–2) + (2–1)] and [(1–0.5) + (0.5–0.25) + <0.25] mm. Discriminant analysis showed 100% fit in the corresponding group. Al and Ca make the greatest contribution to the prediction. As plant fragments decompose, heavy metals and aluminium gradually accumulate while alkali and alkaline earth metals get washed away, the processes being most active at the fermentation stage. The distribution of mineral components in litter derivatives is consistent with their humus state. In small morphometric fractions, compared to large fragments, the ratio (∑HA + ∑FA)/polysaccharides expands, the C/N value gets lower, humic and fulvic acids accumulation occurs mainly for the 1st fraction ones. Peat litter is characterized by an average, moderately dangerous level of pollution: the total pollution index (Zc) is 18. The toxicants composition is dominated by Pb and Zn – chemical elements of the hazard class I.
РИНЦ
Держатели документа:
ИЛ СО РАН : 660036, Красноярск, Академгородок, 50, стр. 28
Доп.точки доступа:
Ефремов, Станислав Петрович; Efremov S.P.; Аврова, Ада Федоровна; Avrova Ada Fyedorovna; Efremova T.T.
| ГРНТИ |
Кл.слова (ненормированные):
мезотрофные березняки -- дериваты -- макро- и микроэлементы -- гумусное состояние -- суммарный показатель загрязнения -- многомерный статистический анализ
Аннотация: Изучались торфянистые подстилки мохово-древесного состава в насаждениях березы пушистой (Betula pubescens Ehrh.) травяно-мшистых групп типов леса в северной части междуречья Оби и Томи (географические координаты 56°23′186″ с.ш., 084°32′519″ в.д.). Подстилки характеризуются слабой насыщенностью основаниями – 35.6%, кислой реакцией среды – pHH2O 4.0, зольностью – 8.9%. Среднее содержание макро- и микроэлементов образует следующий нисходящий ряд, мг/кг: Сa5105 > > Fe4201 > Al3614 > K986 > Mg893 > Mn468 > Sr230 > Na153 > Zn51 >Pb13 > Cu6.8 > Ni5 > Cr4.6 > Co2.9 > Cd0.2. Согласно факторному анализу, состав минеральной компоненты подстилок в процессе деструкции растительных остатков на 57% определяется изменчивостью содержания тяжёлых металлов, на 37% – щелочных, щелочноземельных, Zn, Cd. Методом древовидной кластеризации морфометрические фракции растительных фрагментов (дериваты) организовались следующим образом: >10 мм, [(10–5) + + (5–3) + (3–2) + (2–1)] и [(1–0.5) + (0.5–0.25) + <0.25] мм. Дискриминантный анализ показал 100% попадание в соответствующую группу. Наибольший вклад в предсказание вносят Al и Са. По мере распада растительных фрагментов тяжелые металлы и алюминий последовательно накапливаются, щелочные и щелочноземельные металлы вымываются и наиболее активно – на стадии ферментации. Распределение минеральных компонентов в дериватах подстилок согласуется с их гумусным состоянием. В мелких морфометрических фракциях по сравнению с крупными фрагментами расширяется отношение (∑ГК + ∑ФК)/полисахариды, сужается величина С/N, накапливаются гуминовые и фульвокислоты главным образом 1-й фракции. Торфянистые подстилки характеризуются средним, умеренно опасным уровнем загрязнения: суммарный показатель загрязнения (Zc) – 18. В составе токсикантов доминируют Pb, Zn – химические элементы I класса опасности
Peat litter of moss-woody composition was studied in swamp birch (Betula pubescens Ehrh.) forests of the grass-mossy forest types in the northern part of the Ob and Tom interfluve (geographical coordinates N 56°23′186″, E 084°32′519″). The litter samples are characterized by a low base saturation of 35.6%; an acidic reaction (pHH2O 4.0); and an ash content of 8.9%. The average content of macro- and microelements forms the following descending series, mg/kg: Ca5105 > Fe4201 > Al3614 > K986 > Mg893 > Mn468 > Sr230 > Na153 > > Zn51 > Pb13 > Cu6.8 > Ni5 > Cr4.6 > Co2.9 > Cd0.2. According to the factor analysis, the mineral component composition of the litter during the plant residues destruction is 57% determined by the variability of the heavy metals content, 37% by the content of alkali, alkaline earth, Zn and Cd. Using the tree clustering method, the morphometric fractions of plant fragments (derivatives) were organized as follows: >10 mm, [(10–5) + + (5–3) + (3–2) + (2–1)] and [(1–0.5) + (0.5–0.25) + <0.25] mm. Discriminant analysis showed 100% fit in the corresponding group. Al and Ca make the greatest contribution to the prediction. As plant fragments decompose, heavy metals and aluminium gradually accumulate while alkali and alkaline earth metals get washed away, the processes being most active at the fermentation stage. The distribution of mineral components in litter derivatives is consistent with their humus state. In small morphometric fractions, compared to large fragments, the ratio (∑HA + ∑FA)/polysaccharides expands, the C/N value gets lower, humic and fulvic acids accumulation occurs mainly for the 1st fraction ones. Peat litter is characterized by an average, moderately dangerous level of pollution: the total pollution index (Zc) is 18. The toxicants composition is dominated by Pb and Zn – chemical elements of the hazard class I.
РИНЦ
Держатели документа:
ИЛ СО РАН : 660036, Красноярск, Академгородок, 50, стр. 28
Доп.точки доступа:
Ефремов, Станислав Петрович; Efremov S.P.; Аврова, Ада Федоровна; Avrova Ada Fyedorovna; Efremova T.T.
Восстановление растительности на залежах в лесостепи Красноярского края
[Текст] : статья / Н. М. Ковалева, Р. С. Собачкин // Лесоведение. - 2023. - № 5. - С. 502-512, DOI 10.31857/S0024114823040058
. - ISSN 0024-1148
Перевод заглавия: RESTORATION OF VEGETATION ON FALLOWS IN KRASNOYARSK TERRITORY’S FOREST STEPPES
Кл.слова (ненормированные):
СОСНА ОБЫКНОВЕННАЯ -- ЗАЛЕЖЬ -- ЛЕСОСТЕПЬ -- ВИДОВОЕ РАЗНООБРАЗИЕ -- НАДЗЕМНАЯ ФИТОМАССА -- ЭКОЛОГО-ЦЕНОТИЧЕСКИЕ ГРУППЫ -- SCOTS PINE -- LONG-FALLOW LANDS -- FOREST-STEPPE -- SPECIES DIVERSITY -- ABOVEGROUND PHYTOMASS -- ECOLOGICAL AND COENOTIC GROUPS
Аннотация: Видовое богатство залежных земель лесостепной зоны Красноярского края насчитывает 64 вида сосудистых растений из 50 родов и 19 семейств. Ведущие семейства ценофлоры: бобовые (Leguminosae) (10 видов или 16%), сложноцветные (Compositae) (10 или 16%), мятликовые (Poaceae) (9 или 14%), розоцветные (Rosaceae) (7 или 11%). Основу флоры залежей составили мезофиты (69%) с незначительным участием мезоксерофитов (17%) и мезогигрофитов (9%). Среди эколого-ценотических групп наибольшее участие принимали виды лугово-лесного разнотравья и злаков (34%), рудеральные (22%) и лесостепные (14%). Надземная фитомасса травяного покрова зависела от возраста залежи (p < 0.001) и густоты соснового подроста (p < 0.05). Разнотравно-кострецовые залежи являлись наиболее продуктивными среди залежей лесостепной зоны (1.14 ± 0.11–2.02 ± 0.25 т га–1). Разнотравно-злаковые залежи, испытывающие на себе существенное эдификаторное влияние сосны обыкновенной (Pinus sylvestris L.) (густота 29.6 тыс. шт. га–1 в пересчете в крупный подрост), имели наименьшую надземную фитомассу (0.23 ± 0.06 т га–1). Залежные участки возрастом 7–18 лет активно возобновляются древесной растительностью, где густота сосны обыкновенной варьировала в широких пределах от 0.9 до 29.6 тыс. шт. га–1 в пересчете в крупный подрост. Установлено, что при увеличении густоты сосны обыкновенной происходит снижение числа видов, видового разнообразия, видовой насыщенности, а также проективного покрытия травяного покрова (p < 0.001).
The species richness of the long-fallow lands in the Krasnoyarsk Territory’s forest-steppe zone includes 64 species of vascular plants from 50 genera and 19 families. Leading families of cenoflora are Leguminosae (10 species or 16%), Compositae (10 or 16%), Poaceae (9 or 14%) and Rosaceae (7 or 11%). The basis of the long-fallow lands flora were mesophytes (69%) with an insignificant participation of mesoxerophytes (17%) and mesohygrophytes (9%). Among the ecological-coenotic groups, species of meadow-forest forbs and grasses (34%), ruderal (22%) and forest-steppe (14%) species took the largest part. The aboveground phytomass of the grass cover depended on the age of the fallow (p < 0.001) and the density of the pine undergrowth (p < 0.05). Forb-brome fallows were the most productive among all in the forest-steppe zone (1.14 ± 0.11–2.02 ± 0.25 t ha–1). Forb-gramineous fallows, experiencing a significant edificatory influence of Scots pine (Pinus sylvestris L.) (density of 29600 units ha–1 in terms of large undergrowth), had the lowest aboveground phytomass (0.23 ± 0.06 t ha–1). Fallow plots aged 7–18 years undergo rapid reforestation, with the density of Scots pine varying widely from 0.9 to 29.6 thousand units ha–1 in terms of large undergrowth. It has been established that with an increase in the Scots pine density, the number of species, species diversity, species saturation, as well as the projective grass cover tend to decrease (p < 0.001).
Статья в РИНЦ
Держатели документа:
Институт леса им. В.Н. Сукачева СО РАН : 660036, Красноярск, Академгородок, 50, стр. 28
Доп.точки доступа:
Ковалева, Наталья Михайловна; Собачкин, Роман Сергеевич; Sobachkin, Roman Sergyeyevich; Kovalyeva, Natal'ya Mikhaylovna
Перевод заглавия: RESTORATION OF VEGETATION ON FALLOWS IN KRASNOYARSK TERRITORY’S FOREST STEPPES
Кл.слова (ненормированные):
СОСНА ОБЫКНОВЕННАЯ -- ЗАЛЕЖЬ -- ЛЕСОСТЕПЬ -- ВИДОВОЕ РАЗНООБРАЗИЕ -- НАДЗЕМНАЯ ФИТОМАССА -- ЭКОЛОГО-ЦЕНОТИЧЕСКИЕ ГРУППЫ -- SCOTS PINE -- LONG-FALLOW LANDS -- FOREST-STEPPE -- SPECIES DIVERSITY -- ABOVEGROUND PHYTOMASS -- ECOLOGICAL AND COENOTIC GROUPS
Аннотация: Видовое богатство залежных земель лесостепной зоны Красноярского края насчитывает 64 вида сосудистых растений из 50 родов и 19 семейств. Ведущие семейства ценофлоры: бобовые (Leguminosae) (10 видов или 16%), сложноцветные (Compositae) (10 или 16%), мятликовые (Poaceae) (9 или 14%), розоцветные (Rosaceae) (7 или 11%). Основу флоры залежей составили мезофиты (69%) с незначительным участием мезоксерофитов (17%) и мезогигрофитов (9%). Среди эколого-ценотических групп наибольшее участие принимали виды лугово-лесного разнотравья и злаков (34%), рудеральные (22%) и лесостепные (14%). Надземная фитомасса травяного покрова зависела от возраста залежи (p < 0.001) и густоты соснового подроста (p < 0.05). Разнотравно-кострецовые залежи являлись наиболее продуктивными среди залежей лесостепной зоны (1.14 ± 0.11–2.02 ± 0.25 т га–1). Разнотравно-злаковые залежи, испытывающие на себе существенное эдификаторное влияние сосны обыкновенной (Pinus sylvestris L.) (густота 29.6 тыс. шт. га–1 в пересчете в крупный подрост), имели наименьшую надземную фитомассу (0.23 ± 0.06 т га–1). Залежные участки возрастом 7–18 лет активно возобновляются древесной растительностью, где густота сосны обыкновенной варьировала в широких пределах от 0.9 до 29.6 тыс. шт. га–1 в пересчете в крупный подрост. Установлено, что при увеличении густоты сосны обыкновенной происходит снижение числа видов, видового разнообразия, видовой насыщенности, а также проективного покрытия травяного покрова (p < 0.001).
The species richness of the long-fallow lands in the Krasnoyarsk Territory’s forest-steppe zone includes 64 species of vascular plants from 50 genera and 19 families. Leading families of cenoflora are Leguminosae (10 species or 16%), Compositae (10 or 16%), Poaceae (9 or 14%) and Rosaceae (7 or 11%). The basis of the long-fallow lands flora were mesophytes (69%) with an insignificant participation of mesoxerophytes (17%) and mesohygrophytes (9%). Among the ecological-coenotic groups, species of meadow-forest forbs and grasses (34%), ruderal (22%) and forest-steppe (14%) species took the largest part. The aboveground phytomass of the grass cover depended on the age of the fallow (p < 0.001) and the density of the pine undergrowth (p < 0.05). Forb-brome fallows were the most productive among all in the forest-steppe zone (1.14 ± 0.11–2.02 ± 0.25 t ha–1). Forb-gramineous fallows, experiencing a significant edificatory influence of Scots pine (Pinus sylvestris L.) (density of 29600 units ha–1 in terms of large undergrowth), had the lowest aboveground phytomass (0.23 ± 0.06 t ha–1). Fallow plots aged 7–18 years undergo rapid reforestation, with the density of Scots pine varying widely from 0.9 to 29.6 thousand units ha–1 in terms of large undergrowth. It has been established that with an increase in the Scots pine density, the number of species, species diversity, species saturation, as well as the projective grass cover tend to decrease (p < 0.001).
Статья в РИНЦ
Держатели документа:
Институт леса им. В.Н. Сукачева СО РАН : 660036, Красноярск, Академгородок, 50, стр. 28
Доп.точки доступа:
Ковалева, Наталья Михайловна; Собачкин, Роман Сергеевич; Sobachkin, Roman Sergyeyevich; Kovalyeva, Natal'ya Mikhaylovna