/ M. Meroni, N. Tchebakova // Forest Ecology and Management. - 2002. - Vol. 169, № 1-2. - С. 115-122
Аннотация: Direct measurements of CO2 and water vapour of regenerating forests after fire events (secondary succession stages) are needed to determine the role of such disturbances in the biome carbon and water cycles functioning. An estimation of the extension of burnt areas is also required in order to quantify NBP (net biome productivity), a variable that includes large-scale carbon losses (such as fire) bypassing heterotrophic respiration. Hence, eddy covariance measurements Of CO2 and water vapour were carried out in a natural regenerating forest after a fire event. Measurements were collected continuously over a Betula spp. stand in central Siberia during summer 1999. Minimum carbon exchange rate (NEE, net ecosystem exchange) exceeded -30 mumol m(-2) s(-1) (net flux negative indicating CO2 uptake by vegetation) and the partitioning of the available energy was mostly dominated by latent heat flux. Structure, age and composition of the forest were analysed to understand the secondary succession stages. The results were compared with previous studies on coniferous forests where biospheric exchanges of energy were dominated by sensible heat fluxes and small carbon uptake rates, thus indicating rather limiting growing conditions. A classification of a Landsat-4 Thematic Mapper scene has been carried out to determine the magnitude of burnt areas and the extension of broadleaf regenerating forests. Analysis of burnt areas spatial frequency and carbon exchanges of the regenerating forest stress the importance of considering large area disturbances for full carbon accounting. (C) 2002 Elsevier Science B.V. All rights reserved.
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Scopus
Держатели документа:
Russian Acad Sci, Siberian Div, Sukachev Isnt Forestry, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Meroni, M. ; Мерони М.; Tchebakova, Nadezhda Mikhailovna; Чебакова, Надежда Михайловна
Труды сотрудников ИЛ им. В.Н. Сукачева СО РАН
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Найдено документов в текущей БД: 303
Climatic control of stand thinning in unmanaged spruce forests of the southern taiga in European Russia
/ N.N. Vygodskaya, E.-D. Schulze, N.M. Tchebakova et al // Tellus. Series B: Chemical and physical meteorology. - 2002. - Vol. 54B, № 5. - С. 443-461
Аннотация: The demography of Picea abies trees was studied over a period of about 30 yr on permanent plots in six forest types of an unmanaged forest located in a forest reserve of the Southern Taiga, NW of Moscow. This study encompassed a broad range of conditions that are typical for old growth spruce forests in the boreal region, including sites with a high water table and well drained sites, podzolic soils, acidic soils and organic soils. At all sites stand density, tree height, breast height diameter and age has been periodically recorded since 1968. Tree density ranged between 178 and 1035 trees ha(-1) for spruce and between 232 and 1168 trees ha-1 for the whole stand, including mainly Betula and Populus. Biomass ranged between 5.4 and 170 t(dw) ha(-1) for spruce and between 33 to 198 td, ha(-1) for the whole stand. Averaged over a long period of time, biomass did not change with stand density according to the self-thinning rule. in fact, on most sites biomass remained almost constant in the long term, while stand density decreased. The study demonstrates that the loss of living trees was not regulated by competitive interactions between trees, but by disturbances caused by climatic events. Dry years caused losses of minor and younger trees without affecting biomass. In contrast, periodic storms resulted in a loss of biomass without affecting density, except for extreme events, where the whole stand may fall. Dry years followed by wet years enhance the effect on stand density. Since mainly younger trees were lost, the apparent average age of the stand increased more than real time (20% for Picea). Average mortality was 2.8 +/- 0.5% yr(-1) for spruce. Thus, the forest is turned over once every 160-180 yr by disturbances. The demography of dead trees shows that the rate of decay depends on the way the tree died. Storm causes uprooting and stem breakage, where living trees fall to the forest floor and decay with a mean residence time (t(1/2)) of about 16 yr (decomposition rate constant k(d) = 0.042 yr(-1)). This contrasts with trees that die by drought or insect damage, and which remain as standing dead trees with a mean residence time of 3-13 yr until they are brought to ground, mainly by wind. These standing dead trees require an additional mean residence time of about 22 yr for decay on the ground (k(d) = 0.031). In conclusion, we demonstrate that, rather than competitive interactions, it is climate extremes, namely drought, rapid changes of dry years followed by wet years, and storm that determine stand structure, biomass and density, which then affect the net exchange with the atmosphere. The climatic effects are difficult to predict, because the sensitivity of a stand to climate extremes depends on the past history. This may range from no effect, if the stand was recovering from an earlier drought and exhibited a relatively low density, to a total collapse of canopies, if drought reduces stand density to an extent that other climatic extremes (especially wind) may cause further damage.
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Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок 50/28
Доп.точки доступа:
Schulze, E.-D.; Шульце Е-Д; Tchebakova, Nadezhda Mikhailovna; Чебакова, Надежда Михайловна; Выгодская Н.Н.
Аннотация: The demography of Picea abies trees was studied over a period of about 30 yr on permanent plots in six forest types of an unmanaged forest located in a forest reserve of the Southern Taiga, NW of Moscow. This study encompassed a broad range of conditions that are typical for old growth spruce forests in the boreal region, including sites with a high water table and well drained sites, podzolic soils, acidic soils and organic soils. At all sites stand density, tree height, breast height diameter and age has been periodically recorded since 1968. Tree density ranged between 178 and 1035 trees ha(-1) for spruce and between 232 and 1168 trees ha-1 for the whole stand, including mainly Betula and Populus. Biomass ranged between 5.4 and 170 t(dw) ha(-1) for spruce and between 33 to 198 td, ha(-1) for the whole stand. Averaged over a long period of time, biomass did not change with stand density according to the self-thinning rule. in fact, on most sites biomass remained almost constant in the long term, while stand density decreased. The study demonstrates that the loss of living trees was not regulated by competitive interactions between trees, but by disturbances caused by climatic events. Dry years caused losses of minor and younger trees without affecting biomass. In contrast, periodic storms resulted in a loss of biomass without affecting density, except for extreme events, where the whole stand may fall. Dry years followed by wet years enhance the effect on stand density. Since mainly younger trees were lost, the apparent average age of the stand increased more than real time (20% for Picea). Average mortality was 2.8 +/- 0.5% yr(-1) for spruce. Thus, the forest is turned over once every 160-180 yr by disturbances. The demography of dead trees shows that the rate of decay depends on the way the tree died. Storm causes uprooting and stem breakage, where living trees fall to the forest floor and decay with a mean residence time (t(1/2)) of about 16 yr (decomposition rate constant k(d) = 0.042 yr(-1)). This contrasts with trees that die by drought or insect damage, and which remain as standing dead trees with a mean residence time of 3-13 yr until they are brought to ground, mainly by wind. These standing dead trees require an additional mean residence time of about 22 yr for decay on the ground (k(d) = 0.031). In conclusion, we demonstrate that, rather than competitive interactions, it is climate extremes, namely drought, rapid changes of dry years followed by wet years, and storm that determine stand structure, biomass and density, which then affect the net exchange with the atmosphere. The climatic effects are difficult to predict, because the sensitivity of a stand to climate extremes depends on the past history. This may range from no effect, if the stand was recovering from an earlier drought and exhibited a relatively low density, to a total collapse of canopies, if drought reduces stand density to an extent that other climatic extremes (especially wind) may cause further damage.
WOS
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок 50/28
Доп.точки доступа:
Schulze, E.-D.; Шульце Е-Д; Tchebakova, Nadezhda Mikhailovna; Чебакова, Надежда Михайловна; Выгодская Н.Н.
Interannual and seasonal variations of energy and water vapour fluxes above a Pinus sylvestris forest in the Siberian middle taiga
/ N.M. Tchebakova et al, O. Shibistova // Tellus. Series B: Chemical and physical meteorology. - 2002. - Vol. 54B, № 5. - С. 537-551
Аннотация: Long-term eddy covariance measurements of energy and water fluxes and associated climatic parameters were carried out above a Scots pine (Pinus sylvestris) forest in the middle taiga zone of Central Siberia. Data from June 1998 through October 2000 are presented. With the exception of winter 1998/1999, data collection over this period were more or less continuous. A distinct seasonality in surface energy exchange characteristics was observed in all years. In early spring in the absence of physiological activity by the vegetation, about 80% of the net radiation was partitioned for sensible heat, resulting in Bowen ratios, beta, as high as 8. In the 1-2 wk period associated with onset of photosynthesis in spring, evaporation rates increased rapidly and beta rapidly dropped. However, even during summer months, sensible heat fluxes typically exceeded latent heat fluxes and beta remained above 2.0. Observed daily evaporation rates varied between 0.5-1.0 mm d(-1) in spring and autumn and 1.5-2 mm d(-1) in midsummer. The overall average for the three growing seasons examined was 1.25 mm d(-1). Precipitation was on average 230 mm for the growing period, with evaporation over the same time being about 190 mm for both 1999 and 2000. This represented only about 35% of the equilibrium evaporation rate. There was typically a positive hydrological balance of 40 mm for the growing season as a whole. However, in all three years examined, evaporation exceeded precipitation totals by 20-40 mm in at least one calendar month during summer. During the growing season, daily averaged surface conductances varied between 0.15 and 0.20 mol m(-2) s(-1) (3-4.5 mm s(-1)) in dry or cool months and 0.30-0.35 mol m(-2) s(-1) (6.5-8 mm s(-1)) in moist and warm months. Despite a negative hydrological balance during midsummer, there was little evidence for reduced canopy conductances in response to soil water deficits. This may have been the consequence of roots accessing water from within or just above a perched water table, located at about 2 m depth.
WOS,
Scopus
Держатели документа:
Russian Acad Sci, Sukachev Inst Forest
Доп.точки доступа:
Tchebakova, Nadezhda Mikhailovna; Чебакова, Надежда Михайловна; Shibistova, Olga Borisovna; Шибистова, Ольга Борисовна
Аннотация: Long-term eddy covariance measurements of energy and water fluxes and associated climatic parameters were carried out above a Scots pine (Pinus sylvestris) forest in the middle taiga zone of Central Siberia. Data from June 1998 through October 2000 are presented. With the exception of winter 1998/1999, data collection over this period were more or less continuous. A distinct seasonality in surface energy exchange characteristics was observed in all years. In early spring in the absence of physiological activity by the vegetation, about 80% of the net radiation was partitioned for sensible heat, resulting in Bowen ratios, beta, as high as 8. In the 1-2 wk period associated with onset of photosynthesis in spring, evaporation rates increased rapidly and beta rapidly dropped. However, even during summer months, sensible heat fluxes typically exceeded latent heat fluxes and beta remained above 2.0. Observed daily evaporation rates varied between 0.5-1.0 mm d(-1) in spring and autumn and 1.5-2 mm d(-1) in midsummer. The overall average for the three growing seasons examined was 1.25 mm d(-1). Precipitation was on average 230 mm for the growing period, with evaporation over the same time being about 190 mm for both 1999 and 2000. This represented only about 35% of the equilibrium evaporation rate. There was typically a positive hydrological balance of 40 mm for the growing season as a whole. However, in all three years examined, evaporation exceeded precipitation totals by 20-40 mm in at least one calendar month during summer. During the growing season, daily averaged surface conductances varied between 0.15 and 0.20 mol m(-2) s(-1) (3-4.5 mm s(-1)) in dry or cool months and 0.30-0.35 mol m(-2) s(-1) (6.5-8 mm s(-1)) in moist and warm months. Despite a negative hydrological balance during midsummer, there was little evidence for reduced canopy conductances in response to soil water deficits. This may have been the consequence of roots accessing water from within or just above a perched water table, located at about 2 m depth.
WOS,
Scopus
Держатели документа:
Russian Acad Sci, Sukachev Inst Forest
Доп.точки доступа:
Tchebakova, Nadezhda Mikhailovna; Чебакова, Надежда Михайловна; Shibistova, Olga Borisovna; Шибистова, Ольга Борисовна
Seasonal and spatial variability in soil CO2 efflux rates for a central Siberian Pinus sylvestris forest
/ O. Shibistova et al, S. Efgrafova, G. Zrazhevskaya // Tellus. Series B: Chemical and physical meteorology. - 2002. - Vol. 54B, № 5. - С. 552-567
Аннотация: Rates of CO2 efflux from the floor of a central Siberian Scots pine (Pinus sylvestris) forest were measured using a dynamic closed chamber system and by a eddy covariance system placed 2.5 m above the forest floor. Measurements were undertaken for a full growing season: from early May to early October 1999. Spatial variability as determined by the chamber measurements showed the rate of CO2 efflux to depend on location, with rates from relatively open areas ("glades") only being about 50% those observed below or around trees. This was despite generally higher temperatures in the glade during the day. A strong relationship between CO2 efflux rate and root density was observed in early spring, suggesting that lower rates in open areas may have been attributable to fewer roots there. Continuous measurements with the eddy covariance system provided good temporal coverage. This method, however, provided estimates of ground CO2 efflux rate rates that were about 50% lower than chamber measurements that were undertaken in areas considered to be representative of the forest as a whole. An examination of the seasonal pattern of soil CO2 efflux rates suggests that much of the variability in CO2 efflux rate could be accounted for by variations in soil temperature. Nevertheless, there were also some indications that the soil water deficits served to reduce soil CO2 efflux rates during mid-summer. Overall the sensitivity of CO2 efflux rate to temperature seems to be greater for this boreal ecosystem than has been the case for most other studies.
WOS,
Scopus
Держатели документа:
Russian Acad Sci, VN Sukacehv Forest Inst, Siberian Branch, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Shibistova, Olga Borisovna; Шибистова, Ольга Борисовна; Yevgrafova, Svetlana Yur'yevna; Евграфова, Светлана Юрьевна; Zrazhevskaya, Galina Kirillovna; Зражевская, Галина Кирилловна
Аннотация: Rates of CO2 efflux from the floor of a central Siberian Scots pine (Pinus sylvestris) forest were measured using a dynamic closed chamber system and by a eddy covariance system placed 2.5 m above the forest floor. Measurements were undertaken for a full growing season: from early May to early October 1999. Spatial variability as determined by the chamber measurements showed the rate of CO2 efflux to depend on location, with rates from relatively open areas ("glades") only being about 50% those observed below or around trees. This was despite generally higher temperatures in the glade during the day. A strong relationship between CO2 efflux rate and root density was observed in early spring, suggesting that lower rates in open areas may have been attributable to fewer roots there. Continuous measurements with the eddy covariance system provided good temporal coverage. This method, however, provided estimates of ground CO2 efflux rate rates that were about 50% lower than chamber measurements that were undertaken in areas considered to be representative of the forest as a whole. An examination of the seasonal pattern of soil CO2 efflux rates suggests that much of the variability in CO2 efflux rate could be accounted for by variations in soil temperature. Nevertheless, there were also some indications that the soil water deficits served to reduce soil CO2 efflux rates during mid-summer. Overall the sensitivity of CO2 efflux rate to temperature seems to be greater for this boreal ecosystem than has been the case for most other studies.
WOS,
Scopus
Держатели документа:
Russian Acad Sci, VN Sukacehv Forest Inst, Siberian Branch, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Shibistova, Olga Borisovna; Шибистова, Ольга Борисовна; Yevgrafova, Svetlana Yur'yevna; Евграфова, Светлана Юрьевна; Zrazhevskaya, Galina Kirillovna; Зражевская, Галина Кирилловна
Soil and canopy CO2, 13CO2, H2O and sensible heat flux partitions in a forest canopy inferred from concentration measurements
/ J.M. Styles et al, O. Shibistova // Tellus. Series B: Chemical and physical meteorology. - 2002. - Vol. 54B, № 5. - С. 655-676
Аннотация: A canopy scale model is presented that utilises Lagrangian dispersal theory to describe the relationship between source distribution and concentration within the canopy. The present study differs from previous studies in three ways: (1) source/sink distributions are solved simultaneously for CO2, (CO2)-C-13, H2O and sensible heat to find a solution consistent with leaf-level constraints imposed by photosynthetic capacity, stomatal and boundary layer conductance, available energy and carbon isotopic discrimination during diffusion and carboxylation; (2) the model is used to solve for parameters controlling the nonlinear source interactions rather than the sources themselves; and (3) this study used plant physiological principles to allow the incorporation of within- and above-canopy measurements of the C-13/C-12 ratios Of CO2 as an additional constraint. Source strengths Of CO2, H2O, sensible heat and (CO2)-C-13 within a Siberian mixed-coniferous forest were constrained by biochemical and energy-balance principles applied to sun and shaded leaves throughout the canopy. Parameters relating to maximum photosynthetic capacity, stomatal conductance, radiation penetration and turbulence structure were determined by the optimisation procedure to match modelled and measured concentration profiles, effectively inverting the concentration data. Ground fluxes Of CO2, H2O and sensible heat were also determined by the inversion. Total ecosystem fluxes predicted from the inversion were compared to hourly averaged above-canopy eddy covariance measurements over a ten-day period, with good agreement. Model results showed that stomatal conductance and maximum photosynthetic capacity were depressed due to the low temperatures experienced during snow melt; radiation penetrated further than simple theoretical predictions because of leaf clumping and penumbra, and stability effects were important in the morning and evening. The inversion was limited by little vertical structure in the concentration profiles, particularly of water vapour, and by co-dependence of canopy parameters.
WOS,
Scopus
Держатели документа:
VN Sukachev Inst Forests, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Styles , J.M.; Стайлес Дж.М.; Shibistova, Olga Borisovna; Шибистова, Ольга Борисовна
Аннотация: A canopy scale model is presented that utilises Lagrangian dispersal theory to describe the relationship between source distribution and concentration within the canopy. The present study differs from previous studies in three ways: (1) source/sink distributions are solved simultaneously for CO2, (CO2)-C-13, H2O and sensible heat to find a solution consistent with leaf-level constraints imposed by photosynthetic capacity, stomatal and boundary layer conductance, available energy and carbon isotopic discrimination during diffusion and carboxylation; (2) the model is used to solve for parameters controlling the nonlinear source interactions rather than the sources themselves; and (3) this study used plant physiological principles to allow the incorporation of within- and above-canopy measurements of the C-13/C-12 ratios Of CO2 as an additional constraint. Source strengths Of CO2, H2O, sensible heat and (CO2)-C-13 within a Siberian mixed-coniferous forest were constrained by biochemical and energy-balance principles applied to sun and shaded leaves throughout the canopy. Parameters relating to maximum photosynthetic capacity, stomatal conductance, radiation penetration and turbulence structure were determined by the optimisation procedure to match modelled and measured concentration profiles, effectively inverting the concentration data. Ground fluxes Of CO2, H2O and sensible heat were also determined by the inversion. Total ecosystem fluxes predicted from the inversion were compared to hourly averaged above-canopy eddy covariance measurements over a ten-day period, with good agreement. Model results showed that stomatal conductance and maximum photosynthetic capacity were depressed due to the low temperatures experienced during snow melt; radiation penetrated further than simple theoretical predictions because of leaf clumping and penumbra, and stability effects were important in the morning and evening. The inversion was limited by little vertical structure in the concentration profiles, particularly of water vapour, and by co-dependence of canopy parameters.
WOS,
Scopus
Держатели документа:
VN Sukachev Inst Forests, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Styles , J.M.; Стайлес Дж.М.; Shibistova, Olga Borisovna; Шибистова, Ольга Борисовна
Estimates of regional surface carbon dioxide exchange and carbon and oxygen isotope discrimination during photosynthesis from concentration profiles in the atmospheric boundary layer
/ J.M. Styles et al, N. Tchebakova // Tellus. Series B: Chemical and physical meteorology. - 2002. - Vol. 54B, № 5. - С. 768-783
Аннотация: The integrating properties of the atmospheric boundary layer allow the influence of surface exchange processes on the atmosphere to be quantified and estimates of large-scale fluxes of trace gases and plant isotopic discrimination to be made. Five flights were undertaken over two days in and above the convective boundary layer (CBL) in a vegetated region in central Siberia. Vertical profiles Of CO2 and H2O concentrations, temperature and pressure were obtained during each flight. Air flask samples were taken at various heights for carbon and oxygen isotopic analysis Of CO2. Two CBL budget methods were compared to estimate regional surface fluxes Of CO2 and plant isotopic discrimination against (CO2)-C-13 and (COO)-O-18-O-16. Flux estimates were compared to ground-based eddy covariance measurements. The fluxes obtained for CO2 using the first method agreed to within 10% of fluxes measured in the forest at the study site by eddy covariance. Those obtained from the second method agreed to within 35% when a correction was applied for air loss out of the integrating column and for subsidence. The values for C-13 discrimination were within the range expected from knowledge Of C-3 plant discriminations during photosynthesis, while the inferred O-18 discrimination varied considerably over the two-day period. This variation may in part be explained by the enrichment of chloroplast water during the day due to evaporation from an initial signature in the morning close to source water. Additional potential complications arising from the heterogeneous nature of the landscape are discussed.
WOS,
Scopus
Держатели документа:
Russian Acad Sci, VN Sukachev Forest Inst, Siberian Div, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Styles et al, J.M.; Стайлес Дж.М.; Tchebakova, Nadezhda Mikhailovna; Чебакова, Надежда Михайловна
Аннотация: The integrating properties of the atmospheric boundary layer allow the influence of surface exchange processes on the atmosphere to be quantified and estimates of large-scale fluxes of trace gases and plant isotopic discrimination to be made. Five flights were undertaken over two days in and above the convective boundary layer (CBL) in a vegetated region in central Siberia. Vertical profiles Of CO2 and H2O concentrations, temperature and pressure were obtained during each flight. Air flask samples were taken at various heights for carbon and oxygen isotopic analysis Of CO2. Two CBL budget methods were compared to estimate regional surface fluxes Of CO2 and plant isotopic discrimination against (CO2)-C-13 and (COO)-O-18-O-16. Flux estimates were compared to ground-based eddy covariance measurements. The fluxes obtained for CO2 using the first method agreed to within 10% of fluxes measured in the forest at the study site by eddy covariance. Those obtained from the second method agreed to within 35% when a correction was applied for air loss out of the integrating column and for subsidence. The values for C-13 discrimination were within the range expected from knowledge Of C-3 plant discriminations during photosynthesis, while the inferred O-18 discrimination varied considerably over the two-day period. This variation may in part be explained by the enrichment of chloroplast water during the day due to evaporation from an initial signature in the morning close to source water. Additional potential complications arising from the heterogeneous nature of the landscape are discussed.
WOS,
Scopus
Держатели документа:
Russian Acad Sci, VN Sukachev Forest Inst, Siberian Div, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Styles et al, J.M.; Стайлес Дж.М.; Tchebakova, Nadezhda Mikhailovna; Чебакова, Надежда Михайловна
Fluxes and activity of dissolved organic carbon in larch ecosystems of the Northern part of Central Siberia
: материалы временных коллективов / A. S. Prokushkin [и др.] // Proceedings of the eighth symposium on the joint Siberian permafrost studies between Japan and Russia in 1999. - Onogawa : National Institute for Environmental Studies, 2000. - С. 135-142. - Библиогр. в конце ст.
Аннотация: Estimation of the flux of water soluble organic matter through larch stand components has showed that potential DOC stock of forest floor, litter and upper 5-cm soil layer depended on stand location on relief.
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок 50/28
Доп.точки доступа:
Prokushkin, Anatoly Stanislavovich; Прокушкин, Анатолий Станиславович; Prokushkin, Staniclav Grigor'evich; Прокушкин Станислав Григорьевич; Koike, T.; Койке Т.; Abaimov, Anatoly Platonovich ; Абаимов Анатолий Платонович
Аннотация: Estimation of the flux of water soluble organic matter through larch stand components has showed that potential DOC stock of forest floor, litter and upper 5-cm soil layer depended on stand location on relief.
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок 50/28
Доп.точки доступа:
Prokushkin, Anatoly Stanislavovich; Прокушкин, Анатолий Станиславович; Prokushkin, Staniclav Grigor'evich; Прокушкин Станислав Григорьевич; Koike, T.; Койке Т.; Abaimov, Anatoly Platonovich ; Абаимов Анатолий Платонович
The response of the soil CO2 emissions of a deciduou mixed stands in Hokkaido (Japan) to doubling of atmospheric carbon dioxide concentration
: материалы временных коллективов / O. V. Masyagina, S. G. Prokushkin, T. Koike // Лесные экосистемы Северо-Восточной Азии и их динамика: Материалы международной конференции. - Владивосток : Дальнаука, 2006. - С. 64-67. - Библиогр. в конце ст.
Аннотация: We examined effect of soil temperature and mineral soil water content on soil respiration regarding to CO2 conditions and soil type. Only a few correlations between soil respiration and ecological factors had been found. Thus, there was one negative significant correlation between soil respiratiion and Tsoil of volcanic soil at elevated CO2 in July (r2=-0.67, p=0.002, N=18). We found negative correlations between Rsoil and MSWC in volcanic soil at elevated CO2 in July (r2=-0.57, p=0.015, N=18), in brown forest soil at elevaedt CO2 in August (r2=-0.53, p=0.023, N=18), and in brown forest soil at ambient CO2 in October (r2=-0.59, p=0.010, N=18). We did not find any effect of soil type on soil respiration during vegetative period.
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок 50/28
Доп.точки доступа:
Prokushkin, Staniclav Grigor'evich; Прокушкин Станислав Григорьевич; Koike, T.; Койке Т.; Масягина, Оксана Викторовна
Имеются экземпляры в отделах:
РСФ (25.10.2006г. (1 экз.) - Б.ц.) - свободны 1
Аннотация: We examined effect of soil temperature and mineral soil water content on soil respiration regarding to CO2 conditions and soil type. Only a few correlations between soil respiration and ecological factors had been found. Thus, there was one negative significant correlation between soil respiratiion and Tsoil of volcanic soil at elevated CO2 in July (r2=-0.67, p=0.002, N=18). We found negative correlations between Rsoil and MSWC in volcanic soil at elevated CO2 in July (r2=-0.57, p=0.015, N=18), in brown forest soil at elevaedt CO2 in August (r2=-0.53, p=0.023, N=18), and in brown forest soil at ambient CO2 in October (r2=-0.59, p=0.010, N=18). We did not find any effect of soil type on soil respiration during vegetative period.
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок 50/28
Доп.точки доступа:
Prokushkin, Staniclav Grigor'evich; Прокушкин Станислав Григорьевич; Koike, T.; Койке Т.; Масягина, Оксана Викторовна
Имеются экземпляры в отделах:
РСФ (25.10.2006г. (1 экз.) - Б.ц.) - свободны 1
РСФ
S 55
S 55
Short-term microbial kinetics of soil microbial respiration - A general parameter across scales
: 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
Имеются экземпляры в отделах:
РСФ (13.03.2007г. (1 экз.) - Б.ц.) - свободны 1
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
Имеются экземпляры в отделах:
РСФ (13.03.2007г. (1 экз.) - Б.ц.) - свободны 1
Structure and biomass of larch stands regenerating naturally after clear-cut logging
: материалы временных коллективов / I. M. Danilin // Water, air & soil pollution. - 1995. - Vol. 82, № 1-2. - С. 125-131. - Библиогр. в конце ст.
Аннотация: Variations in the succession following cutting of a herbaceous Larix sibirica Ledeb. phytocoenosis along the southern boundary of boreal forests in southern Siberia and in Eastern Hentey, Mongolia, were studied. Morphometric methods were used to determine the dimensional hierarchies of coenopopulation individuals. Structure and productivity of the aboveground components including standing wood, herbaceous cover and litter were studied. The maximum aboveground phytomass was measured.
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Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036 Красноярск, Академгородок 50/28
Доп.точки доступа:
Данилин, Игорь Михайлович
Имеются экземпляры в отделах:
Арх (02.05.2007г. (1 экз.) - Б.ц.) - свободны 1
Аннотация: Variations in the succession following cutting of a herbaceous Larix sibirica Ledeb. phytocoenosis along the southern boundary of boreal forests in southern Siberia and in Eastern Hentey, Mongolia, were studied. Morphometric methods were used to determine the dimensional hierarchies of coenopopulation individuals. Structure and productivity of the aboveground components including standing wood, herbaceous cover and litter were studied. The maximum aboveground phytomass was measured.
Scopus,
Полный текст,
WOS
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036 Красноярск, Академгородок 50/28
Доп.точки доступа:
Данилин, Игорь Михайлович
Имеются экземпляры в отделах:
Арх (02.05.2007г. (1 экз.) - Б.ц.) - свободны 1
Modelling forest regeneration processes in clear-cut and burned areas in Angara Region
: материалы временных коллективов / V. A. Sokolov, S. K. Farber, I. M. Danilin // Water, air & soil pollution. - 1995. - Vol. 82, № 1-2. - С. 155-160. - Библиогр. в конце ст.
Аннотация: A method to select measures for enhancing natural forest-regeneration process in areas under extensive management is discussed. Using available information on geomorphological site characteristics and stand parameters, indices are determined using a specific criterion that describes the forest regeneration process. Using these indices as model inputs, cleacuts and burns can be classified; within each stratum the natural forest regeneration proces is similar. Analysing these strata, one can select a regime of forest treatment that is appropriate for a given stratum and, consequently, for the clearcuts (or burns) it includes.
Scopus,
Полный текст,
WOS
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036 Красноярск, Академгородок 50/28
Доп.точки доступа:
Farber, Sergey Kimovich; Danilin, Igor' Mikhaylovich; Соколов, Владимир Алексеевич
Имеются экземпляры в отделах:
Арх (02.05.2007г. (1 экз.) - Б.ц.) - свободны 1
Аннотация: A method to select measures for enhancing natural forest-regeneration process in areas under extensive management is discussed. Using available information on geomorphological site characteristics and stand parameters, indices are determined using a specific criterion that describes the forest regeneration process. Using these indices as model inputs, cleacuts and burns can be classified; within each stratum the natural forest regeneration proces is similar. Analysing these strata, one can select a regime of forest treatment that is appropriate for a given stratum and, consequently, for the clearcuts (or burns) it includes.
Scopus,
Полный текст,
WOS
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036 Красноярск, Академгородок 50/28
Доп.точки доступа:
Farber, Sergey Kimovich; Danilin, Igor' Mikhaylovich; Соколов, Владимир Алексеевич
Имеются экземпляры в отделах:
Арх (02.05.2007г. (1 экз.) - Б.ц.) - свободны 1
Carbon pools and fluxes of 25-year old coniferous and deciduous stands in Middle Siberia
: материалы временных коллективов / E. F. Vedrova // Water, air & soil pollution. - 1995. - Vol. 82, № 1-2. - С. 239-246. - Библиогр. в конце ст.
Аннотация: Between 72 and 88% of carbon (C) loss in forest litter decomposition returns to the atmosphere in the form of carbon dioxide. The share of water-soluble organic products does not exceed 3-4%. Between 8% under spruce and 25% under aspen and pine of the total C loss from litter organic matter goes to the formation of humus. Decomposition intensity of the dead organic matter on the soil surface is close to annual litterfall income (except under cedar). The specific rate of decomposition processes among the coniferous litters is minimum for cedar (167 mg C g-1 yr-1) and maximum for larch (249 mg C-1 yr-1). The spicific rate of decomposition of organic residues under aspen and birch canopies are 344 and 362 mg C-1 yr-1.
Scopus,
Полный текст,
WOS
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036 Красноярск, Академгородок 50/28
Доп.точки доступа:
Ведрова Эстелла Федоровна
Имеются экземпляры в отделах:
Арх (02.05.2007г. (1 экз.) - Б.ц.) - свободны 1
Аннотация: Between 72 and 88% of carbon (C) loss in forest litter decomposition returns to the atmosphere in the form of carbon dioxide. The share of water-soluble organic products does not exceed 3-4%. Between 8% under spruce and 25% under aspen and pine of the total C loss from litter organic matter goes to the formation of humus. Decomposition intensity of the dead organic matter on the soil surface is close to annual litterfall income (except under cedar). The specific rate of decomposition processes among the coniferous litters is minimum for cedar (167 mg C g-1 yr-1) and maximum for larch (249 mg C-1 yr-1). The spicific rate of decomposition of organic residues under aspen and birch canopies are 344 and 362 mg C-1 yr-1.
Scopus,
Полный текст,
WOS
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036 Красноярск, Академгородок 50/28
Доп.точки доступа:
Ведрова Эстелла Федоровна
Имеются экземпляры в отделах:
Арх (02.05.2007г. (1 экз.) - Б.ц.) - свободны 1
Aspen bark photosynthesis and its significance to remote sensing and carbon budget estimates in the boreal ecosystem
: материалы временных коллективов / V. I. Kharuk // Water, air & soil pollution. - 1995. - Vol. 82, № 1-2. - С. 483-497. - Библиогр. в конце ст.
Аннотация: Our findings have shown that the spectral characteristics of aspen bark differ considerably from the "grey body" representations typically utilised in radiative transfer models. Also, since the bark and leaf canopy fractions have different C assimilation capacities, the partitioning of canopy Chl into leaf and bark strata should improve C assimilation estimates. Remote sensing technology must be relied upon, especially in vast and largely in accessible regions such as the boreal biome, for landscape- and regional-scale studies of C budgets. In these studies, estimates of forest productivity and C exchange currently rely on spectral indices obtained from remote satellite/aircraft sensors; these spectral ratios are used to indirectly estimate C assimilation through correlation with chlorophyll and photosynthetic capacity.
Полный текст,
Scopus
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036 Красноярск, Академгородок 50/28
Доп.точки доступа:
Kharuk, Vyacheslav Ivanovich; Харук Вячеслав Иванович
Имеются экземпляры в отделах:
Арх (04.05.2007г. (1 экз.) - Б.ц.) - свободны 1
Аннотация: Our findings have shown that the spectral characteristics of aspen bark differ considerably from the "grey body" representations typically utilised in radiative transfer models. Also, since the bark and leaf canopy fractions have different C assimilation capacities, the partitioning of canopy Chl into leaf and bark strata should improve C assimilation estimates. Remote sensing technology must be relied upon, especially in vast and largely in accessible regions such as the boreal biome, for landscape- and regional-scale studies of C budgets. In these studies, estimates of forest productivity and C exchange currently rely on spectral indices obtained from remote satellite/aircraft sensors; these spectral ratios are used to indirectly estimate C assimilation through correlation with chlorophyll and photosynthetic capacity.
Полный текст,
Scopus
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036 Красноярск, Академгородок 50/28
Доп.точки доступа:
Kharuk, Vyacheslav Ivanovich; Харук Вячеслав Иванович
Имеются экземпляры в отделах:
Арх (04.05.2007г. (1 экз.) - Б.ц.) - свободны 1
Carbon in vegetation of Russian forests: methods to estimate storage and geographical distribution
: материалы временных коллективов / V. Alexeyev [и др.] // Water, air & soil pollution. - 1995. - Vol. 82, № 1-2. - С. 271-282. - Библиогр. в конце ст.
Аннотация: Estimates of carbon (C) storage for the forest vegetation of Russia vary to a considerable extent. In this paper we describe methods of estimating C storage of forest ecosystems and present estimates of C storage in the forest vegetationb of administrative territories and ecoregion of Russia. Estimates of C storage are based on National Forest Inventory data, estimates of the phytomass of trees and other vegetation of different forest ecosystems in various ecoregions of Russia, and mapped data for natural ecoregions. The forest ecosystems of Russia (771.1 Mha) have 118.8 Pg of C with 23.6% of the total in forest vegetation, 14.1% in the countries with temperate and boreal forest ecosystems.
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Полный текст
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Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036 Красноярск, Академгородок 50/28
Доп.точки доступа:
Alexeyev, Vladislav Alexandrovich; Алексеев, Владислав Александрович; Birdsey, R.A.; Бёдси Р.А.; Stakanov, Vladimir Dmitriyevich; Стаканов, Виктор Дмитриевич; Korotkov, Ivan Alexandrovich; Коротков Иван Александрович
Имеются экземпляры в отделах:
Арх (04.05.2007г. (1 экз.) - Б.ц.) - свободны 1
Аннотация: Estimates of carbon (C) storage for the forest vegetation of Russia vary to a considerable extent. In this paper we describe methods of estimating C storage of forest ecosystems and present estimates of C storage in the forest vegetationb of administrative territories and ecoregion of Russia. Estimates of C storage are based on National Forest Inventory data, estimates of the phytomass of trees and other vegetation of different forest ecosystems in various ecoregions of Russia, and mapped data for natural ecoregions. The forest ecosystems of Russia (771.1 Mha) have 118.8 Pg of C with 23.6% of the total in forest vegetation, 14.1% in the countries with temperate and boreal forest ecosystems.
Scopus,
Полный текст
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036 Красноярск, Академгородок 50/28
Доп.точки доступа:
Alexeyev, Vladislav Alexandrovich; Алексеев, Владислав Александрович; Birdsey, R.A.; Бёдси Р.А.; Stakanov, Vladimir Dmitriyevich; Стаканов, Виктор Дмитриевич; Korotkov, Ivan Alexandrovich; Коротков Иван Александрович
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Арх (04.05.2007г. (1 экз.) - Б.ц.) - свободны 1
РСФ
C 98
C 98
Cytoginetical studies of Batrachium Kauffmannii (CLERC) V. KRECZ. from Yenisey river in region of radioactive impact
: absracts / M. G. Kornilova [и др.] // Enviromis. International conference on enviromental observations, modelling and information systems, Tomsk, Russia, July 1-8, 2006: program and abstracts. - 2006. - С. 138-139
Аннотация: Results of Batrachium kauffmannii (Clerc) V. Krecz. cytoginetical studies from Yenisey river in region of radiactive impact of Mining-and-Chemical Combine (MCC) are presented. The samples were selected in area of water with maximym influence of wide spectrum of pollution: mouth of Tel' river (95km from Krasnoyarsk), Bol'shoy Balchug (97km from Krasnoyarsk), and Esaulovo as control (45 km from Krasnoyarsk higher in stream).
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок, 50, стр., 28
Доп.точки доступа:
Kornilova, M.G.; Корнилова М.Г.; Pimenov, Alexandr Vladimirovich; Пименов, Александр Владимирович; Sedel'nikova, Tamara Stanislavovna; Седельникова, Тамара Станиславовна; Muratova, Elena Nikolayevna; Муратова, Елена Николаевна
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РСФ (13.03.2008г. (1 экз.) - Б.ц.) - свободны 1
Аннотация: Results of Batrachium kauffmannii (Clerc) V. Krecz. cytoginetical studies from Yenisey river in region of radiactive impact of Mining-and-Chemical Combine (MCC) are presented. The samples were selected in area of water with maximym influence of wide spectrum of pollution: mouth of Tel' river (95km from Krasnoyarsk), Bol'shoy Balchug (97km from Krasnoyarsk), and Esaulovo as control (45 km from Krasnoyarsk higher in stream).
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок, 50, стр., 28
Доп.точки доступа:
Kornilova, M.G.; Корнилова М.Г.; Pimenov, Alexandr Vladimirovich; Пименов, Александр Владимирович; Sedel'nikova, Tamara Stanislavovna; Седельникова, Тамара Станиславовна; Muratova, Elena Nikolayevna; Муратова, Елена Николаевна
Имеются экземпляры в отделах:
РСФ (13.03.2008г. (1 экз.) - Б.ц.) - свободны 1
Changing world, boreal forests and IBFRA
: материалы временных коллективов / A. Z. Shvidenko // Boreal forests in a changing world: challenges and needs for action: Proceedings of the International conference August 15-21 2011, Krasnoyarsk, Russia. - Krasnoyarsk : V.N. Sukachev Institute of forest SB RAS, 2011. - С. 8-12. - Библиогр. в конце ст.
Аннотация: Boreal forests play substantial role in sustainable functioning of the Earth system, protect water and soil, are a home for many indigenous nations, and serve as a unique source of valuable industrial wood and other forest products. Ongoing and future climate change is expected to be the most dramatic in high latitudes that put dangerous challenges for the boreal world. Increasing anthropogenic pressure may accelerate the nagative impact of climate change on boreal ecosystems. There is an urgent need for development and implementation of anticipatory strategies of boreal forest to, and mitigation of, the negative consequences of global change. IBFRA has to play an outstanding role in this process.
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок 50/28
Доп.точки доступа:
Швиденко, Анатолий Зиновьевич
Аннотация: Boreal forests play substantial role in sustainable functioning of the Earth system, protect water and soil, are a home for many indigenous nations, and serve as a unique source of valuable industrial wood and other forest products. Ongoing and future climate change is expected to be the most dramatic in high latitudes that put dangerous challenges for the boreal world. Increasing anthropogenic pressure may accelerate the nagative impact of climate change on boreal ecosystems. There is an urgent need for development and implementation of anticipatory strategies of boreal forest to, and mitigation of, the negative consequences of global change. IBFRA has to play an outstanding role in this process.
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок 50/28
Доп.точки доступа:
Швиденко, Анатолий Зиновьевич
Energy, water and CO2 exchange in major ecosystems in Central Siberia (from eddy covariance measuraments)
: материалы временных коллективов / N. M. Tchebakova [и др.] // Boreal forests in a changing world: challenges and needs for action: Proceedings of the International conference August 15-21 2011, Krasnoyarsk, Russia. - Krasnoyarsk : V.N. Sukachev Institute of forest SB RAS, 2011. - С. 95-100. - Библиогр. в конце ст.
Аннотация: Daily, seasonal and annual dynamics of energy (radiation and neat balance components) and mass (water and carbon dioxide) exchange between the atmosphere and major Siberian ecosystems: a pine forerst, a Sphagnum bog, a true steppe, and a tussock tundra along the yenisei meridian (about 90 graduates E) were analyzed from eddy covariance mrasurements obtained during 1998-2000 and 2002-2004 in the flame of the Siberia-Carbon and TCOS-Siberia projects. All these ecosystems were found to be a carbon of a different strength: -38,-52,-115 and -156 gCm -2 yr in the tundra, bog, steppe, and forest respectively.
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок 50/28
Доп.точки доступа:
Tchebakova, Nadezhda Mikhailovna; Чебакова, Надежда Михайловна; Arneth, A.; Арнес А.; Parfenova, Elena Ivanovna; Парфенова, Елена Ивановна; Vaganov, Yevgeny Alexandrovich; Ваганов Евгений Александрович
Аннотация: Daily, seasonal and annual dynamics of energy (radiation and neat balance components) and mass (water and carbon dioxide) exchange between the atmosphere and major Siberian ecosystems: a pine forerst, a Sphagnum bog, a true steppe, and a tussock tundra along the yenisei meridian (about 90 graduates E) were analyzed from eddy covariance mrasurements obtained during 1998-2000 and 2002-2004 in the flame of the Siberia-Carbon and TCOS-Siberia projects. All these ecosystems were found to be a carbon of a different strength: -38,-52,-115 and -156 gCm -2 yr in the tundra, bog, steppe, and forest respectively.
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок 50/28
Доп.точки доступа:
Tchebakova, Nadezhda Mikhailovna; Чебакова, Надежда Михайловна; Arneth, A.; Арнес А.; Parfenova, Elena Ivanovna; Парфенова, Елена Ивановна; Vaganov, Yevgeny Alexandrovich; Ваганов Евгений Александрович
Hydrological consequences of forest harvesting in boreal forests of Central Siberia
: материалы временных коллективов / T. A. Burenina, E. V. Fedotova // Boreal forests in a changing world: challenges and needs for action: Proceedings of the International conference August 15-21 2011, Krasnoyarsk, Russia. - Krasnoyarsk : V.N. Sukachev Institute of forest SB RAS, 2011. - С. 118-121. - Библиогр. в конце ст.
Аннотация: Soil and water protection functions of boreal forests in West Sayan and Northern Priangarye are greatly effected by forest industry, firstly, timber cutting. After concentrated timber felling all ecological forest functions are changing. On the base of long time forest and hydrology investigations on cuts and in secondary forest an estimation of water balance was made taking into account forest structure change during regeneration succsssion. Obtained data showed soil erosion rate depending on soil properties, topography, and moisture conditions, the latter determining surface runoff development.
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок 50/28
Доп.точки доступа:
Fedotova, Elena Viktorovna; Федотова, Елена Викторовна; Буренина, Тамара Анисимовна
Аннотация: Soil and water protection functions of boreal forests in West Sayan and Northern Priangarye are greatly effected by forest industry, firstly, timber cutting. After concentrated timber felling all ecological forest functions are changing. On the base of long time forest and hydrology investigations on cuts and in secondary forest an estimation of water balance was made taking into account forest structure change during regeneration succsssion. Obtained data showed soil erosion rate depending on soil properties, topography, and moisture conditions, the latter determining surface runoff development.
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок 50/28
Доп.точки доступа:
Fedotova, Elena Viktorovna; Федотова, Елена Викторовна; Буренина, Тамара Анисимовна
Modeling of CO2 fluxes between boreal forest and atmosphere
: материалы временных коллективов / I. N. Bezkorovaynaya // Boreal forests in a changing world: challenges and needs for action: Proceedings of the International conference August 15-21 2011, Krasnoyarsk, Russia. - Krasnoyarsk : V.N. Sukachev Institute of forest SB RAS, 2011. - С. 305-307. - Библиогр. в конце ст.
Аннотация: Estimating terrestrial ecosystem CO2 fluxes is very important for our understanding of the global carbon cycle. This paper presents a zero-dimensional mathematical model of the ecosystem of Siberian boreal forests. It was used for comparison tall-tower-based CO2 fluxes with biometric field measurements. The model is a system of ordinary differential equations with additional conditions superimposed on the parameters. The main occurring proceses.are described - photosynthesis, respiration, seasonal changes of active phytomass, water balance of trees, the influence of light, humidity, and temperature of phytosynthesis and respiration.
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок 50/28
Доп.точки доступа:
Barkhatov, Y.V.; Бархатов Й.В.; Timokhina, Anastasiya Vladimirovna; Panov, Alexey Vasil'yevich; Панов, Алексей Васильевич; Vedrova, Estella Fedorovna; Ведрова, Эстелла Федоровна; Trefilova, Ol'ga Vladimirovna; Трефилова, Ольга Владимировна
Аннотация: Estimating terrestrial ecosystem CO2 fluxes is very important for our understanding of the global carbon cycle. This paper presents a zero-dimensional mathematical model of the ecosystem of Siberian boreal forests. It was used for comparison tall-tower-based CO2 fluxes with biometric field measurements. The model is a system of ordinary differential equations with additional conditions superimposed on the parameters. The main occurring proceses.are described - photosynthesis, respiration, seasonal changes of active phytomass, water balance of trees, the influence of light, humidity, and temperature of phytosynthesis and respiration.
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок 50/28
Доп.точки доступа:
Barkhatov, Y.V.; Бархатов Й.В.; Timokhina, Anastasiya Vladimirovna; Panov, Alexey Vasil'yevich; Панов, Алексей Васильевич; Vedrova, Estella Fedorovna; Ведрова, Эстелла Федоровна; Trefilova, Ol'ga Vladimirovna; Трефилова, Ольга Владимировна
Modelling of seasonal dynamics and annual photosynthesis in conifers and its relation with radial growth
: материалы временных коллективов / A. V. Benkova // Workshop on climate change, the tree growth response, and reconstruction of climate 25-29 January 2006, V.N. Sukachev Institute of Forest SB RAS, Krasnoyarsk, Russia. - Krasnoyarsk : V.N. Sukachev Institute of Forest SB RAS, 2006. - С. 32
Аннотация: At high latitudes, where temperature determines the growth process, the calculated dynamics of productivity adequately describe real dynamics of certain conifer growth. In time periods, when the link between productivity and radiall growth decreases, water regime of a tree plays an increasingly important role.
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок 50/28
Доп.точки доступа:
Бенькова, Анна Викторовна
Аннотация: At high latitudes, where temperature determines the growth process, the calculated dynamics of productivity adequately describe real dynamics of certain conifer growth. In time periods, when the link between productivity and radiall growth decreases, water regime of a tree plays an increasingly important role.
Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок 50/28
Доп.точки доступа:
Бенькова, Анна Викторовна