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

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Найдено документов в текущей БД: 14

    Forest-tundra ecotone response to climate change in the Western Sayan Mountains, Siberia
/ V. I. Kharuk, S. T. Im, M. L. Dvinskaya // Scandinavian Journal of Forest Research. - 2010. - Vol. 25, Is. 3. - P224-233, DOI 10.1080/02827581003766959 . - ISSN 0282-7581

Кл.слова (ненормированные):
Alpine forest line -- Climate-induced tree response -- Forest-tundra ecotone -- Landsat -- Siberian pine -- Vegetation spatial pattern -- Air temperature -- Climate trends -- Crown closures -- Forest stand -- Forest-tundra ecotone -- Ground observations -- Krummholz -- LANDSAT -- Multi-temporal -- Pine vegetation -- Shift-and -- SIBERIA -- Slope steepness -- Spatial patterns -- Temperature limits -- Temperature trends -- Tree growth -- Upper boundary -- Data flow analysis -- Landforms -- Reforestation -- Temperature -- Vegetation -- Climate change -- Altitude -- Climates -- Data Processing -- Growth -- Mountains -- Pinus -- Plants -- Reforestation -- Satellites -- Trees -- Abies -- Pinus sibirica

Аннотация: Tree response to climate trends is most likely to be observed in the forest-tundra ecotone, where mainly temperature limits tree growth. On-ground observation and multitemporal Landsat data were used in the analysis of forest-tundra ecotone dynamics (from 1976 to 2000) in the Western Sayan Mountains, Siberia. Observations showed an increase in forest stand crown closure, upward tree-line and regeneration shift and the transformation of Siberian pine and fir krummholz into arboreal forms. Closed stands were increasing in the area at a rate of 0.8% year -1 and advancing their upper boundary at an altitudinal rate of 0.6 m year -1; these changes were shown mainly by the transformation of sparse stands into closed stands. The altitudinal rate of regeneration propagation was estimated at 1.2 m year -1. It was also found that these changes correlated positively with temperature trends. The response of tree vegetation to air temperature increase was dependent on topographic relief features (azimuth and slope steepness). В© 2010 Taylor & Francis.

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Держатели документа:
V. N. Sukachev Institute of Forest, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Kharuk, V.I.; Im, S.T.; Dvinskaya, M.L.

    Land use impacts on river hydrological regimes in Northern Asia
/ A. Onuchin [et al.] // IAHS-AISH Publication. - 2009. - Vol. 331: Symposium JS.4 at the Joint Convention of the International Association of Hydrological Sciences, IAHS and the International Association of Hydrogeologists, IAH (6 September 2009 through 12 September 2009, Hyderabad) Conference code: 83573. - P163-170 . -

Кл.слова (ненормированные):
Afforestation -- Clear cuts -- Forest logging -- Hydrological regime -- Precipitation -- River catchments -- River flow -- Afforestation -- Clear cuts -- Forest logging -- Hydrological regime -- Precipitation -- River catchments -- River flow -- Catchments -- Decision making -- Groundwater -- Hydrogeology -- Land use -- Landforms -- Reforestation -- Runoff -- Stream flow -- Water resources -- Watersheds -- Rivers -- afforestation -- assessment method -- catchment -- clearcutting -- decision making -- environmental indicator -- human activity -- hydrological regime -- hydrology -- land cover -- land use change -- logging (geophysics) -- regional climate -- river flow -- runoff -- sustainability -- water quality -- watershed -- Siberia

Аннотация: River flow is vitally important to many human activities. River flow is influenced by climatic and land-cover changes. Land-use practices have a significant effect on water flow and quality. Land use can change surface runoff, which in turn can be used as an environmental indicator of a land use level of sustamability. Along with the regional climate, hydrological processes occurring in river basins in Siberia and mountainous Kyrgyzia are controlled by forest logging and afforestation. The method used to analyse annual river flow genesis to date allowed the onset of, and assessment of, the level of human activities in the watersheds. Moreover, river flow genesis can be used in land use decision-making. River flow reflects all watershed changes, which can have opposite effects, thus compensating for each other. This study confirmed that river flow changes in time, thus reflecting land cover changes in watersheds. Copyright В© 2009 IAHS Press.

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Держатели документа:
V. N. Sukachev Institute of Forest Siberian Branch, Russian Academy of Sciences, 660036, Academgorodok, Krasnoyarsk, Russian Federation
P. A. Gan Institute of Forest and Nut Plantation, Kyrgyzian Academy of Sciences, Kargachevaya rosha, 15, 720015, Bishkek, Kyrgyzstan

Доп.точки доступа:
Onuchin, A.; Burenina, T.; Gaparov, K.; Ziryukina, N.

    Siberian pine decline and mortality in southern siberian mountains
/ V. I. Kharuk [et al.] // Forest Ecology and Management. - 2013. - Vol. 310. - P312-320, DOI 10.1016/j.foreco.2013.08.042 . -

Кл.слова (ненормированные):
Climate-induced tree mortality -- Drought impact on forests -- Siberian pine decline -- Tree die-off -- Climate variables -- Die-off -- Precipitation gradients -- Russian far east -- Siberian pine decline -- Spatial patterns -- Tree mortality -- Vegetation index -- Drought -- Landforms -- Radiometers -- Water supply -- Forestry -- aridity -- coniferous tree -- data interpretation -- dendrochronology -- drought resistance -- drought stress -- evapotranspiration -- growth rate -- Landsat -- MODIS -- mortality -- mountain region -- population decline -- satellite data -- vegetation index -- Drought -- Forestry -- Water Supply -- Kuznetsk Alatau -- Russian Federation -- Siberia

Аннотация: The causes and resulting spatial patterns of Siberian pine mortality in eastern Kuznetzky Alatau Mountains, Siberia were analyzed based on satellite (Landsat, MODIS) and dendrochronology data. Climate variables studied included temperature, precipitation and Standardized Precipitation-Evapotranspiration Index (SPEI) drought index. Landsat data analysis showed that stand mortality was first detected in the year 2006 at an elevation of 650m, and extended up to 900m by the year 2012. Mortality was accompanied by a decrease in MODIS-derived vegetation index (EVI). The area of dead stands and the upper mortality line were correlated with increased drought. The uphill margin of mortality was limited by elevational precipitation gradients. Dead stands (i.e., >75% tree mortality) were located mainly on southern slopes. With respect to slope, mortality was observed within a 7-20В° range with greatest mortality occurring on convex terrain. Tree radial increment measurements correlate and were synchronous with SPEI (r2=0.37, rs=80). The results also showed the primary role of drought stress on Siberian pine mortality. A secondary role may be played by bark beetles and root fungi attacks. The observed Siberian pine mortality is part of a broader phenomenon of "dark needle conifers" (DNC, i.e., Siberian pine, fir and spruce) decline and mortality in European Russia, Siberia, and the Russian Far East. All locations of DNC decline coincided with areas of observed drought increase. The results obtained are one of the first observations of drought-induced decline and mortality of DNC at the southern border of boreal forests. Meanwhile if model projections of increased aridity are correct DNC within the southern part of its areal may be replaced by drought-resistant Pinus silvestris and Larix sibirica. В© 2013 Elsevier B.V.

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Держатели документа:
V.N. Sukachev Institute of Forest, Siberian Federal University, Krasnoyarsk, Russian Federation
NASA's Goddard Space Flight Center, Greenbelt, MD 20771, United States

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

    Estimating Siberian timber volume using MODIS and ICESat/GLAS
/ R. Nelson [et al.] // Remote Sens. Environ. - 2009. - Vol. 113, Is. 3. - P691-701, DOI 10.1016/j.rse.2008.11.010 . - ISSN 0034-4257

Кл.слова (ненормированные):
Boreal forest -- GLAS -- LiDAR -- MODIS -- Multispectral -- Siberia -- Timber volume -- Aneroid altimeters -- Biological materials -- Biomass -- Landforms -- Logging (forestry) -- Optical radar -- Radio altimeters -- Renewable energy resources -- Spectrometers -- Timber -- Boreal forest -- GLAS -- LiDAR -- MODIS -- Multispectral -- Siberia -- Timber volume -- Atmospherics -- biomass -- boreal forest -- canopy -- forest resource -- land cover -- MODIS -- timber -- Biomass -- Curl -- Forest Canopy -- Forests -- Land Use -- Logging -- Optical Instruments -- Radar -- Radio -- Remote Sensing -- Renewable Resources -- Spectrometers -- Eurasia -- Siberia

Аннотация: Geosciences Laser Altimeter System (GLAS) space LiDAR data are used to attribute a MODerate resolution Imaging Spectrometer (MODIS) 500В m land cover classification of a 10В° latitude by 12В° longitude study area in south-central Siberia. Timber volume estimates are generated for 16 forest classes, i.e., four forest cover types ? four canopy density classes, across this 811,414В km 2 area and compared with a ground-based regional volume estimate. Two regional GLAS/MODIS timber volume products, one considering only those pulses falling on slopes ? 10В° and one utilizing all GLAS pulses regardless of slope, are generated. Using a two-phase(GLAS-ground plot) sampling design, GLAS/MODIS volumes average 163.4 В± 11.8В m 3/ha across all 16 forest classes based on GLAS pulses on slopes ? 10В° and 171.9 В± 12.4В m 3/ha considering GLAS shots on all slopes. The increase in regional GLAS volume per-hectare estimates as a function of increasing slope most likely illustrate the effects of vertical waveform expansion due to the convolution of topography with the forest canopy response. A comparable, independent, ground-based estimate is 146В m 3/ha [Shepashenko, D., Shvidenko, A., and Nilsson, S. (1998). Phytomass (live biomass) and carbon of Siberian forests. Biomass and Bioenergy, 14, 21-31], a difference of 11.9% and 17.7% for GLAS shots on slopes ? 10В° and all GLAS shots regardless of slope, respectively. A ground-based estimate of total volume for the entire study area, 7.46 ? 10 9В m 3, is derived using Shepashenko et al.'s per-hectare volume estimate in conjunction with forest area derived from a 1990 forest map [Grasia, M.G. (ed.). (1990). Forest Map of USSR. Soyuzgiproleskhoz, Moscow, RU. Scale: 1:2,500,000]. The comparable GLAS/MODIS estimate is 7.38 ? 10 9В m 3, a difference of less than 1.1%. Results indicate that GLAS data can be used to attribute digital land cover maps to estimate forest resources over subcontinental areas encompassing hundreds of thousands of square kilometers.

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Держатели документа:
Biospheric Sciences Branch, NASA/Goddard Space Flight Center, Code 614.4, Greenbelt, MD 20771, United States
Department of Geography, University of Maryland, College Park, MD 20742, United States
Sukachev Forest Institute, Krasnoyarsk-36, Academgorodok, Russian Federation
Science Systems and Applications, Inc., Lanham, MD 20706, United States

Доп.точки доступа:
Nelson, R.; Ranson, K.J.; Sun, G.; Kimes, D.S.; Kharuk, V.; Montesano, P.

    Solar-terrestrial relations in central Asia paleoarchives
/ D. Ovchinnikov [et al.] // International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM. - 2014. - Vol. 1: 14th International Multidisciplinary Scientific Geoconference and EXPO, SGEM 2014 (17 June 2014 through 26 June 2014, ) Conference code: 109699. - P321-324 . -
Аннотация: A solar-terrestrial relations were examined using millennium-scale paleoclimatic data from the Central Asia mountain region. The paleoclimatic data were based on nonvarved lake sediments of the Teletskoye lake and temperature-sensitive long tree-ring width chronologies from the Altai region (Altai Mountains, South Siberia, Russia) in the late Holocene (2000 years). Also a solar-activity during late Holocene was used to analyze. Core of the bottom sediments from the Teletskoe lake (Altai Mountains) were investigated using scanning X-ray fluorescent analysis method with synchrotron radiation (spatial resolution is 0.1 mm). A method ensemble empirical mode decomposition (EEMD) was used to extract low-frequency variability from all presented paleoarchives. The results obtained for paleodata indicate palaeoclimatic oscillations in the range of the de Vries (Suess) (?200-year) solar cycles through the late Holocene. Evidence of the influence of solar activity on global climatic processes and terrestrial ecosystems is discussed.

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Держатели документа:
Institute of Forest SB RASKrasnoyarsk, Russian Federation
Institute of Solar-Terrestrial Physics SB RASIrkutsk, Russian Federation
Institute of Geology SB RASNovosibirsk, Russian Federation
Siberian Federal UniversityKrasnoyarsk, Russian Federation

Доп.точки доступа:
Ovchinnikov, D.; Mordvinov, A.; Kalugin, I.; Darin, A.; Myglan, V.

    Long-term tree-ring variability in the northern Siberia and Altai mountains, Russia
/ D. Ovchinnikov, L. Lyu, A. Kirdyanov // International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM. - 2015. - Vol. 2: 15th International Multidisciplinary Scientific Geoconference and EXPO, SGEM 2015 (18 June 2015 through 24 June 2015, ) Conference code: 153969, Is. 3. - P491-498 . -
Аннотация: Comparison of the long tree-ring series from different regions is important to understand low frequency climate variability over large regions, but it is difficult to identify common low frequency periodicity and their causes. A Hilbert-Huang transform method (HHT) was used to exam two regional temperature sensitive tree-ring width chronologies in the northern Siberia and Altai Mountains. Seven empirical modes were calculated for each tree-ring width chronology to represent high-, mid- and low-frequency signals. A low-frequency variability have identified the common 100-200-year long cycles for the regions. The cyclicity in tree radial growth is likely to be associated with solar periodicity (Gleissberg and Suess cycles). Thus, common decrease of tree-ring radial growth in the two regions around 1700 AD is possibly a result of reduced solar activity (Maunder minimum). The use of HHT method can provide the basis to extract low frequency in climate variability for remote regions to understand better global climate change. © SGEM2015 All Rights Reserved.

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Держатели документа:
Sukachev Institute of Forest, SB RAS, Krasnoyarsk, Russian Federation
Institute of Botany, CAS, Beijing, China

Доп.точки доступа:
Ovchinnikov, D.; Lyu, L.; Kirdyanov, A.

    Potential change in forest types and stand heights in central Siberia in a warming climate
/ N. M. Tchebakova [et al.] // Environ.Res.Lett. - 2016. - Vol. 11, Is. 3, DOI 10.1088/1748-9326/11/3/035016 . - ISSN 1748-9318
Аннотация: Previous regional studies in Siberia have demonstrated climate warming and associated changes in distribution of vegetation and forest types, starting at the end of the 20th century. In this study we used two regional bioclimatic envelope models to simulate potential changes in forest types distribution and developed new regression models to simulate changes in stand height in tablelands and southern mountains of central Siberia under warming 21st century climate. Stand height models were based on forest inventory data (2850 plots). The forest type and stand height maps were superimposed to identify how heights would change in different forest types in future climates. Climate projections from the general circulation model Hadley HadCM3 for emission scenarios B1 and A2 for 2080s were paired with the regional bioclimatic models. Under the harsh A2 scenario, simulated changes included: A 80%-90% decrease in forest-tundra and tundra, a 30% decrease in forest area, a ∼400% increase in forest-steppe, and a 2200% increase in steppe, forest-steppe and steppe would cover 55% of central Siberia. Under sufficiently moist conditions, the southern and middle taiga were simulated to benefit from 21st century climate warming. Habitats suitable for highly-productive forests (≥30-40 m stand height) were simulated to increase at the expense of less productive forests (10-20 m). In response to the more extreme A2 climate the area of these highly-productive forests would increase 10%-25%. Stand height increases of 10 m were simulated over 35%-50% of the current forest area in central Siberia. In the extremely warm A2 climate scenario, the tall trees (25-30 m) would occur over 8%-12% of area in all forest types except forest-tundra by the end of the century. In forest-steppe, trees of 30-40 m may cover some 15% of the area under sufficient moisture. © 2016 IOP Publishing Ltd.

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Держатели документа:
V.N. Sukachev Institute of Forests, Siberian Branch, Russian Academy of Sciences, Academgorodok, 50/28, Krasnoyarsk, Russian Federation
US Forest Service, Rocky Mountain Research Station, Missoula, MT, United States

Доп.точки доступа:
Tchebakova, N. M.; Parfenova, E. I.; Korets, M. A.; Conard, S. G.

    Modeling the boundaries of plant ecotones of mountain ecosystems
/ Y. Ivanova, V. Soukhovolsky // Forests. - 2016. - Vol. 7, Is. 11, DOI 10.3390/f7110271 . - ISSN 1999-4907
Аннотация: The ecological second-order phase transition model has been used to describe height-dependent changes in the species composition of mountain forest ecosystems. Forest inventory data on the distribution of various tree species in the Sayan Mountains (south Middle Siberia) are in good agreement with the model proposed in this study. The model was used to estimate critical heights for different altitudinal belts of vegetation, determine the boundaries and extents of ecotones between different vegetation belts, and reveal differences in the ecotone boundaries between the north- and south-facing transects. An additional model is proposed to describe ecotone boundary shifts caused by climate change. © 2016 by the authors.

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Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Federal Research Center 'Krasnoyarsk Science Center SB RAS', Academgorodok 50-50, Krasnoyarsk, Russian Federation
V.N. Sukachev Institute of Forest, Siberian Branch, Russian Academy of Sciences, Federal Research Center 'Krasnoyarsk Science Center SB RAS', Academgorodok 50-28, Krasnoyarsk, Russian Federation

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

    Probabilistic-statistical models of the dynamics of climatic changes in the Altai Mountains
/ V. N. Ustinova [et al.] // IOP Conference Series: Earth and Environmental Science : Institute of Physics Publishing, 2018. - Vol. 211: International Conference and Early Career Scientists School on Environmental Observations, Modeling and Information Systems, ENVIROMIS 2018 (5 July 2018 through 11 July 2018, ) Conference code: 143586, Is. 1, DOI 10.1088/1755-1315/211/1/012025 . -
Аннотация: A probabilistic-statistical parameterization of time series characterizing geological and climatic processes allows determining some regularities by an autocorrelation analysis of signals which differ in nature. The use of the autocorrelation method for analyzing data related to solar and tectonic activity and characterizing the level of stratospheric ozone (total ozone content), hydrothermal regimes (De Martonne aridity index), and wood structure (maximum density of annual rings) allows us to find regularities in time series of various natural processes. Data on the maximum density of Siberian larch trees growing in the Altai Mountains made it possible to calculate the past changes in total ozone content and the aridity index in the Altai Mountains from 1900 to 2014 based on some similarities in the series and a separation of a dendrochronological signal into its main components. © Published under licence by IOP Publishing Ltd.

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Держатели документа:
TUSUR, RETEM Russia, 40, Lenin Avenue, Tomsk, 634050, Russian Federation
Institute of Monitoring of Climatic and Ecological Systems SB RAS, 10/3, Akademicheskii Ave., Tomsk, 634055, Russian Federation
School of Engineering Entrepreneurship, National Research Tomsk Polytechnic University, 30, Lenina Avenue, Tomsk, 634050, Russian Federation
Sukachev Institute of Forest SB RAS, Akademgorodok No50,.28, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Ustinova, V. N.; Zuev, V. V.; Bondarenko, S. L.; Ustinova, I. G.; Ovchinnikov, D. V.; Kirdjanov, A. V.

    Intra-annual stem radial increment patterns of Chinese pine, Helan Mountains, Northern Central China
/ J. Gao [et al.] // Trees Struct. Funct. - 2019, DOI 10.1007/s00468-019-01813-w . - Article in press. - ISSN 0931-1890
Аннотация: Key message: We investigate the intra-annual growth patterns of Chinese pine in Helan Mountains, confirming that regional water status plays a dominated role in stem radial increment. Abstract: The associations between environmental conditions and stem radial increment (SRI) are useful for assessing a species’ growth response to climate change. Intra-annual SRI dynamics of Chinese pine (Pinus tabulaeformis) were monitored half-hourly by automatic point dendrometer during the growing season (May–September) in 2016 and 2017 at two altitudes in the Helan Mountains, northern central China. Here, we compared the seasonal growth patterns between two altitudes and 2 years. Trees at low altitude are characterized by earlier cessation, shorter growing season, and lower growth rate, resulting in less annual growth, which may reflect the greater drought intensified by rising temperature at low altitude. June precipitation significantly affected tree growth rate. The xylem growth was active when daily mean air temperature was 9.9 °C at our study region for P. tabulaeformis in an arid environment. During the growing season, daily stem radial increment showed a significantly positive correlation with precipitation and a negative correlation with daily air temperature at all altitudes. Climatic variables associated with tree water status, namely precipitation, vapor pressure deficit, and relative humidity, played important roles in daily stem radial increment as the same result as a linear mixed model. These factors drive the complex physiological processes of stem radial increment by influencing the moisture available to the tree. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.

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Держатели документа:
Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 73000, China
University of Chinese Academy of Sciences, Beijing, 10048, China
Institute of Geography, University of Erlangen-Nurnberg, Erlangen, 91058, Germany
Mathematical Methods and Information Technology Department, Siberian Federal University, Krasnoyarsk, 660075, Russian Federation
Laboratory of Tree-Ring Structure, V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Gao, J.; Yang, B.; He, M.; Shishov, V.

    Sunshine as culprit: It induces early spring physiological drought in dark coniferous (Pinus sibirica and Abies sibirica) alpine forest
/ D. F. Zhirnova [et al.] // For. Ecol. Manage. - 2019. - Vol. 449. - Ст. 117458, DOI 10.1016/j.foreco.2019.117458 . - ISSN 0378-1127
Аннотация: Trees comprising high mountain forests have different requirements for site conditions (such as the water supply), thus current climate warming leads to varying reactions of upper forest boundaries depending on the site conditions and ecophysiological features of species. Positive reactions to an increasing heat supply during vegetative season may be hindered for drought-sensitive species by a water deficit in a cold environment, particularly during late winter or early spring. We investigated the radial growth of dark coniferous forest species Siberian stone pine (Pinus sibirica Du Tour) and Siberian fir (Abies sibirica Ledeb.) growing on slopes of different orientation (south-west, east, and north) near the upper forest boundary in an area undergoing fast climate warming: the Western Sayan Mountains (South Siberia, Russia), near a massive water reservoir. Correlations of tree-ring width chronologies with moving 21-day temperature series were used to more precisely determine the timing of temperature influence; an analysis of extreme and optimal years and multifactor regression modeling were applied to assess the most favorable/unfavorable thermal conditions in the study area and to estimate the tree growth reaction to the current climatic trends, respectively. Despite relatively low variation in growth (standard deviation <0.2), a significant common climatic signal in tree-ring width was found at all sampling sites. On the shaded northern slopes, P. sibirica is only mildly limited by summer temperatures and has a low similarity (correlations and synchronicity of extreme/optimal years) with other sites. Conversely, the growth of A. sibirica and P. sibirica on two sunlit slopes is similar (r = 0.44–0.81) and has a common pattern of regulation by temperatures before (r = ?0.17…?80.40; April 3 – May 4 on average) and more significantly during vegetative season (r = 0.31…0.44; May 17 – August 27 on average). We hypothesize that both species, being drought-sensitive, undergo water stress in the early spring, and exposition of previous years’ needles to severe temperature variation may lead to partial defoliation and xylem embolism, thus suppressing growth. The patterns of climatic response and species distribution on slopes indicate that A. sibirica is more sensitive to this physiological drought and needs gentler slopes than P. sibirica. Temperature increase in the study area during the last decades have occured about five times faster in the early spring (being enhanced by the reservoir) than in summer. This combination of spring and summer warming leads to an increase in P. sibirica radial growth on the northern slope and the stable growth of both species on sunlit slopes, i.e. providing a tentatively optimistic assessment of the dark coniferous forests’ near future in the region. © 2019 Elsevier B.V.

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Держатели документа:
Khakass Technical Institute, Siberian Federal University, 27 Shchetinkina, Abakan, 655017, Russian Federation
Siberian Federal University, 79 Svobodny, 660041, Krasnoyarsk, Russian Federation
Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Sciences, 50/28 Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Zhirnova, D. F.; Babushkina, E. A.; Belokopytova, L. V.; Yurin, D. O.; Vaganov, E. A.

    Digital Approach to Forest Cover Mapping: A Case Study of Forest-Tundra in the near-Yenisei Siberia
/ V. A. Ryzhkova, I. V. Danilova, M. A. Korets // IOP Conference Series: Earth and Environmental Science : Institute of Physics Publishing, 2020. - Vol. 509: 11th International Symposium on Digital Earth, ISDE 2019 (24 September 2019 through 27 September 2019, ) Conference code: 161663, Is. 1. - Ст. 012045, DOI 10.1088/1755-1315/509/1/012045 . -
Аннотация: An algorithm of semi-automated classification and mapping of vegetation cover was developed based on the digital data (satellite images, digital elevation model, and climate data base) and ground truth data. The obtained maps cover a range of vegetation growth conditions, diversity of the vegetation types, and bog complexes in the forest-tundra zone of the Middle Siberia. © 2020 Published under licence by IOP Publishing Ltd.

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Держатели документа:
Sukachev Institute of Forest Siberian Branch, Russian Academy of Science, Akademgorodok 50/28, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Ryzhkova, V. A.; Danilova, I. V.; Korets, M. A.

    Thermal responses of mountain birch and Siberian larch of an alpine forest-tundra ecotone to climate change
/ E. A. Tyutkova, I. A. Petrov, S. R. Loskutov // J Therm Anal Calor. - 2021, DOI 10.1007/s10973-021-10752-z . - Article in press. - ISSN 1388-6150
Аннотация: We applied thermogravimetric analysis to ten successive growth rings of Siberian larch and the same number of mountain birch individuals sampled in the alpine forest-tundra ecotone of Kuznetsk Ala Tau mountain ridge to compare physical and chemical responses of the species wood to climate change. Our analysis of the correlation of the wood thermal parameters with air temperature and precipitation revealed that early and latewood cellulose and lignin in the birch were more sensitive to climatic changes as compared to the larch. June–August weather conditions appeared to largely control the chemical composition of the birch early and latewood. Air temperature had a marked influence during synthesis of both early and latewood cell walls, whereas precipitation influenced only latewood. Thermogravimetric analysis of growth rings formed in alpine forest-tundra proved to be an effective tool to study the influence of climatic and weather variability on lignin-carbohydrate complex of deciduous and conifer tree species. © 2021, Akademiai Kiado, Budapest, Hungary.

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Держатели документа:
Laboratory of Woody Plant Physical and Chemical Biology, V.N. Sukachev Institute of Forest, Siberian Branch, Russian Academy of Sciences, Akademdorodork 50/28, Krasnoyarsk, Russian Federation
Forest Monitoring Laboratory, V.N. Sukachev Institute of Forest, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Tyutkova, E. A.; Petrov, I. A.; Loskutov, S. R.

    Carbon stock in litter of middle taiga forest ecosystems of Central Siberia
/ O. Sergeeva, L. Mukhortova, L. Krivobokov // IOP Conference Series: Earth and Environmental Science : IOP Publishing Ltd, 2021. - Vol. 875: 2021 International Forestry Forum on Forest Ecosystems as Global Resource of the Biosphere: Calls, Threats, Solutions, FORESTRY 2021 (9 September 2021 through 10 September 2021, ) Conference code: 174525, Is. 1. - Ст. 012085, DOI 10.1088/1755-1315/875/1/012085 . -

Аннотация: Litter plays an important role in the carbon cycle of forest ecosystems incorporating significant amount of carbon as a result of annual partial die-off of the biomass and releasing it during complex multistage processes of organic matter decomposition. The balance of these processes in the forests of permafrost zone significantly shifts towards the accumulation of dead organic matter. That makes the assessment of litter stock in these ecosystems particularly relevant, especially in relation to the predicted consequences of climate change in the study region. On the territory of middle taiga of Central Siberia, 14 sampling plots were established in the various landforms (slopes of different exposition, lowlands and uplands). The carbon stock in litter of the main forest types of the studied area varied from 0.47 to 4.46 kgC/m2. Also, the paper considers composition of litter accumulated in these ecosystems, including the ratio between fresh litterfall, fermented and humified plant residues, and dead roots. Our results demonstrated that fermented plant residues prevailed in the litter composition in most types of studied forest ecosystems due to specificity of hydrothermal regime and quality of litterfall. The results obtained might be applied to refine the carbon budget of Siberian forests. © Published under licence by IOP Publishing Ltd.

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Держатели документа:
Laboratory of Ecophysiology of Permafrost Systems, Sukachev Institute of Forest of the Siberian Branch of the Ras, 50/28 Akademgorodok Street, Krasnoyarsk, 660036, Russian Federation
Laboratory of Phytocoenology and Forest Resource Management, Sukachev Institute of Forest of the Siberian Branch of the Ras, 50/28 Akademgorodok Street, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Sergeeva, O.; Mukhortova, L.; Krivobokov, L.