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

[Text] / N. M. Tchebakova [et al.] // Environ. Res. Lett. - 2011. - Vol. 6, Is. 4. - Ст. 45207, DOI 10.1088/1748-9326/6/4/045207. - Cited References: 38. - We would like to recognize the Northern Eurasian Earth Science Partnership Initiative (NEESPI) and the NASA Land Cover Land Use Change (LCLUC) program for providing the background that made this work possible. We are greatly appreciative of the current support for this work provided by the NASA InterDisciplinary Science grant NNH09ZDA001N-IDS and the Russian Foundation for Basic Research grant 10-05-00941. We thank our two anonymous reviewers for their very helpful comments. . - 11. - ISSN 1748-9326РУБ Environmental Sciences + Meteorology & Atmospheric Sciences

Аннотация: Humans have traditionally cultivated steppe and forest-steppe on fertile soils for agriculture. Forests are predicted to shift northwards in a warmer climate and are likely to be replaced by forest-steppe and steppe ecosystems. We analyzed potential climate change impacts on agriculture in south-central Siberia believing that agriculture in traditionally cold Siberia may benefit from warming. Simple models determining crop range and regression models determining crop yields were constructed and applied to climate change scenarios for various time frames: pre-1960, 1960-90 and 1990-2010 using historic data and data taken from 2020 and 2080 HadCM3 B1 and A2 scenarios. From 50 to 85% of central Siberia is predicted to be climatically suitable for agriculture by the end of the century, and only soil potential would limit crop advance and expansion to the north. Crop production could increase twofold. Future Siberian climatic resources could provide the potential for a great variety of crops to grow that previously did not exist on these lands. Traditional Siberian crops could gradually shift as far as 500 km northwards (about 50-70 km/decade) within suitable soil conditions, and new crops nonexistent today may be introduced in the dry south that would necessitate irrigation. Agriculture in central Siberia would likely benefit from climate warming. Adaptation measures would sustain and promote food security in a warmer Siberia.

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Держатели документа:
[Tchebakova, N. M.
Parfenova, E. I.] Russian Acad Sci, Siberian Branch, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia
[Lysanova, G. I.] Russian Acad Sci, Siberian Branch, Inst Geog, Irkutsk, Russia
[Soja, A. J.] NASA, Langley Res Ctr, NIA, Hampton, VA 23681 USA

Доп.точки доступа:
Tchebakova, N.M.; Parfenova, E.I.; Lysanova, G.I.; Soja, A.J.

[Text] / M. . Mund [et al.] // Tree Physiol. - 2010. - Vol. 30, Is. 6. - P689-704, DOI 10.1093/treephys/tpq027. - Cited References: 80. - Integrated project CarboEurope-IP, European Commission, Directorate-General Research, Sixth Framework Programme, Priority 1.1.6.3: Global Change and Ecosystem (Contract No. GOCE-CT-2003-505572); Max-Planck-Institute for Biogeochemistry, Jena, Germany. . - 16. - ISSN 0829-318XРУБ Forestry

Аннотация: The periodic production of large seed crops by trees (masting) and its interaction with stern growth has long been the objective of tree physiology research. However, very little is known about the effects of masting on stern growth and total net primary productivity (NPP) at the stand scale. This study was conducted in an old-growth, mixed deciduous forest dominated by Fagus sylvatica (L.) and covers the period from 2003 to 2007, which comprised wet, dry and regular years as well as two masts of Fagus and one mast of the co-dominant tree species Fraxinus excelsior (L.) and Acer pseudoplatanus (L.). We combined analyses of weather conditions and stem growth at the tree level (inter- and intra-annual) with fruit, stem and leaf production, and estimates of total NPP at the stand level. Finally, we compared the annual demand of carbon for biomass production with net canopy assimilation (NCA), derived from eddy covariance flux measurements, chamber measurements and modelling. Annual stem growth of Fagus was most favoured by warm periods in spring and that of Fraxinus by high precipitation in June. For stem growth of Acer and for fruit production, no significant relationships with mean weather conditions were found. Intra-annual stem growth of all species was strongly reduced when the relative plant-available water in soil dropped below a threshold of about 60% between May and July. The inter-annual variations of NCA, total NPP and leaf NPP at the stand level were low (mean values 1313, 662 and 168 g C m(-2) year(-1), respectively), while wood and fruit production varied more and contrarily (wood: 169-241 g C m(-2) year(-1); fruits: 21-142 g C m(-2) year(-1)). In all years, an annual surplus of newly assimilated carbon was calculated (on average 100 g C m(-2) year(-1)). The results suggest that stem growth is generally not limited by insufficient carbon resources; only in mast years a short-term carbon shortage may occur in spring. In contrast to common assumption, stem growth alone is not a sufficient proxy for total biomass production or the control of carbon sequestration by weather extremes.

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Держатели документа:
[Mund, M.
Wirth, C.
Schulze, E. -D.] Max Planck Inst Biogeochem, D-07745 Jena, Germany
[Kutsch, W. L.] Inst Agr Climate Res, Johann Heinrich von Thunen Inst, D-38116 Braunschweig, Germany
[Kahl, T.] Univ Freiburg, Inst Silviculture, D-79085 Freiburg, Germany
[Knohl, A.] ETH, Inst Plant Sci, CH-8092 Zurich, Switzerland
[Knohl, A.] Univ Gottingen, Busgen Inst, D-37077 Gottingen, Germany
[Skomarkova, M. V.] Inst Forest SB RAS, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Mund, M...; Kutsch, W.L.; Wirth, C...; Kahl, T...; Knohl, A...; Skomarkova, M.V.; Schulze, E.D.

/ T. A. Blyakharchuk [et al.] // Environ.Res.Lett. - 2014. - Vol. 9, Is. 6, DOI 10.1088/1748-9326/9/6/065004 . - ISSN 1748-9326
Аннотация: Prehistoric and early historic human cultures are known to be closely connected to and dependent on their natural environments. We test the hypothesis that climate change influenced the means of subsistence of ancient tribes and favored agricultural or cattle herding economic strategies. Our study area is the Khakass-Minusinsk Hollow, located in the foothills of the Sayan Mountains, south-central Siberia, which was, for a few millennia, a buffer zone for human migrations across the Great Eurasian Steppe. Three different methods (the Montane BioClimatic Model, MontBCliM; the biomization method; and the actualizm method) are employed to reconstruct vegetation taken from the fossil pollen of sediment cores in two mountain lakes at eleven time slices related to successive human cultures back to the mid-Holocene. MontBCliM model is used inversely to convert site paleo-vegetation into site paleo-climates. Climate-based regression models are developed and applied to reconstructed climates to evaluate possible pasture and grain crops for these time slices. Pollen-based reconstructions of the climate fluctuations uncovered several dry periods with steppe and forest-steppe and wetter periods with forests since 6000 BP. Grasslands increased by an order of magnitude during the dry periods and provided extensive open space suitable for pastoralism; however, both grain and pasture yields decreased during these dry periods. During wetter climates, both grain and pasture yields increased twofold and supported more fixed human settlements centered around farming and cattle herding. Thus, the dry periods favored pastoralist rather than farming activities. Conversely, tribes that practiced agriculture had some advantage in the wet periods. © 2014 IOP Publishing Ltd.

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Держатели документа:
Institute for Monitoring Climatic and Ecological Systems, Siberian Branch, Russian Academy of Sciences, Akademichesky Prospekt 10/3, 643055 Tomsk, Russian Federation
V.N. Sukachev Institute of Forests, Siberian Branch, Russian Academy of Sciences, Academgorodok, 50/28, 660036 Krasnoyarsk, Russian Federation
National Institute of Aerospace (NIA), NASA Langley Research Center, Climate Sciences, 21 Langley Boulevard, Hampton, VA 23681-2199, United States
Tomsk State University, Lenina 36, 634050 Tomsk, Russian Federation

Доп.точки доступа:
Blyakharchuk, T.A.; Tchebakova, N.M.; Parfenova, E.I.; Soja, A.J.

/ N. M. Tchebakova, E. I. Parfenova, A. J. Soja ; ed.: L. . Mueller, A. K. Sheudshen, F. . Eulenstein // NOVEL METHODS FOR MONITORING AND MANAGING LAND AND WATER RESOURCES IN : SPRINGER INT PUBLISHING AG, 2016. - P269-285. - (Springer Water), DOI 10.1007/978-3-319-24409-9_10. - Cited References:51 . - РУБ Environmental Sciences + Soil Science + Water Resources

Аннотация: The redistribution of terrestrial ecosystems and individual species is predicted to be profound under Global Climate Model simulations. We modeled the progression of potential vegetation and forest types in Siberia by the end of the twenty-first century by coupling large-scale bioclimatic models of vegetation zones and major conifer species with climatic variables and permafrost using the B1 and A2 Hadley Centre HadCM3 climate change scenarios. In the projected warmer and dryer climate, Siberian taiga forests are predicted to dramatically decrease and shift to the northeast, and forest-steppe, steppe, and novel temperate broadleaf forests are predicted to dominate most of Siberia by 2090. The permafrost should not retreat sufficiently to provide favorable habitats for dark (Pinus sibiric, Abies sibirica, and Picea obovata) taiga, and the permafrost-tolerant L. dahurica taiga should remain the dominant forest type in many current permafrost-lain areas. Water stress and fire-tolerant tree species (Pinus sylvestris and Larix spp.) should have an increased advantage over moisture-loving tree species (P. sibirica, A. sibirica, and P. obovata) in a new climate. Accumulated surface fuel loads due to increased tree mortality from drought, insects, and other factors, especially at the southern forest border and in the Siberian interior (Yakutia), together with an increase in severe fire weather, should also lead to increases in large, high-severity fires that are expected to facilitate vegetation progression toward a new equilibrium with the climate. Adaptation of the forest types and tree species to climate change in the south may be based on the genetic means of individual species and human willingness to aid migration, perhaps by seeding. Additionally, useful and viable crops could be established in agricultural lands instead of failing forests.

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Держатели документа:
Russian Acad Sci, VN Sukachev Inst Forest, Siberian Branch SIF SB RAS, Akademgorodok 50-28, Krasnoyarsk 660036, Russia.
NASA, Langley Res Ctr, 21 Langley Blvd,Mail Stop 420, Hampton, VA 23681 USA.

Доп.точки доступа:
Tchebakova, Nadezhda M.; Parfenova, Elena I.; Soja, Amber J.; Mueller, L... \ed.\; Sheudshen, A.K. \ed.\; Eulenstein, F... \ed.\

/ N. M. Tchebakova [et al.] ; ed.: L. . Mueller, A. K. Sheudshen, F. . Eulenstein // NOVEL METHODS FOR MONITORING AND MANAGING LAND AND WATER RESOURCES IN : SPRINGER INT PUBLISHING AG, 2016. - P287-305. - (Springer Water), DOI 10.1007/978-3-319-24409-9_11. - Cited References:22 . - РУБ Environmental Sciences + Soil Science + Water Resources

Аннотация: Human beings have traditionally cultivated the fertile soils of the steppe and forest-steppe for agriculture. Forests are predicted to migrate northward in a warmer climate and are likely to be replaced by forest-steppe and steppe ecosystems. We analysed potential climate change impacts on agriculture in south/central Siberia, hypothesizing that agriculture in traditionally cold Siberia may benefit from warming. Current carbon (C) fluxes in agrosystems have also been analysed, as they are important for the development of land use strategies. Potentials for cropping were evaluated based on simple climate indices such as temperature sums above a base of 5 degrees C (GDD(5)), and an annual moisture index (AMI), which is the ratio of GDD5 to annual precipitation. Envelope models which determine crop range, and regression models which determine crop yields, were constructed and applied to climate change scenarios for several time frames: 1960-1990, using historic data; and data taken from HadCM3 B1 and A2 scenarios for 2020 and 2090. Analyses of carbon fluxes in agrosystems showed that plant phytomass and soil humus serve as a principal C sink. Mineralization flux forms from phytodetritus decomposition, and recently formed humus includes portions of "used" mobile humus. Currently, the C balance of agrosystems is slightly in deficit: the C loss is 0.25 t ha(-1) year(-1). From 50 to 85 % of central Siberia is predicted to be climatically suitable for agriculture by the end of the century, and only soil potential would limit crop advance and expansion to the north. Crop production could double. Future Siberian climatic resources could provide the potential for a great variety of crops to grow which previously did not exist on these lands. Traditional Siberian crops could gradually shift as far as 500 km northward (about 50-70 km per decade) if soil conditions are suitable, and new crops which are non-existent today may be introduced in the dry south, which would necessitate irrigation. Agriculture in central Siberia would likely benefit from climate warming. Adaptation measures would sustain and promote food security in a warmer Siberia.

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Держатели документа:
Russian Acad Sci, Siberian Branch SIF SB RAS, VN Sukachev Inst Forest, Akademgorodok 50, Krasnoyarsk 660049, Russia.
Krasnoyarsk State Agr Univ, Mira Str 90, Krasnoyarsk 660049, Russia.
NASA, Langley Res Ctr, 21 Langley Blvd,Mail Stop 420, Irkutsk 664033, Russia.
Russian Acad Sci, Siberian Branch, VB Sochava Inst Geog, Irkutsk 664033, Russia.

Доп.точки доступа:
Tchebakova, Nadezhda M.; Chuprova, Valentina V.; Parfenova, Elena I.; Soja, Amber J.; Lysanova, Galina I.; Mueller, L... \ed.\; Sheudshen, A.K. \ed.\; Eulenstein, F... \ed.\

/ T. Yonow [et al.] // J. Pest Sci. - 2018. - P1-16, DOI 10.1007/s10340-017-0938-9 . - ISSN 1612-4758
Аннотация: Reliable niche models are a cornerstone of pest risk analyses, informing biosecurity policies and the management of biological invasions. Because species can invade and establish in areas with climates that are different from those that are found in their native range, it is important to accurately capture the range-limiting mechanisms in models that project climate suitability. We examined a published niche model for the beet armyworm, Spodoptera exigua, to assess its suitability for bioeconomic analyses of its pest threat, and identified issues with the model that rendered it unreliable for this purpose. Consequently, we refitted the CLIMEX model, paying close attention to the biology underpinning the stress mechanisms. This highlighted the necessity of carefully considering how the different stress mechanisms operate, and to select mechanisms which align with knowledge on the species’ biology. We also identified the important role of irrigation in modifying habitat suitability. The refitted model accords with both distribution data and our understanding of the biology of this species, including its seasonal range dynamics. The new model identifies establishment risks to South America, Africa, the Middle East and Asia, and highlights that under current climate, Europe is only climatically suitable during warm seasons when crops are available. The modelling exercise reinforced the importance of understanding the meaning of a location record (e.g. persistent versus ephemeral populations) and of carefully exploring the role of habitat-modifying factors, such as irrigation, in allowing species to persist in otherwise inclement localities. © 2018 Springer-Verlag GmbH Germany, part of Springer Nature

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Держатели документа:
HarvestChoice, InSTePP, University of Minnesota, St. Paul, MN, United States
GPO Box 1700, Canberra, ACT, Australia
Forest Zoology Department, Siberian Branch of the Russian Academy of Sciences, Sukachev Institute of Forest, Akademgorodok 50/28, Krasnoyarsk, Russian Federation
Siberian Federal University, 79 Svobodny Pr., Krasnoyarsk, Russian Federation
Private Bag 5, Wembley, WA, Australia

Доп.точки доступа:
Yonow, T.; Kriticos, D. J.; Kirichenko, N.; Ota, N.

/ E. V. Fedotova, Yu. A. Maglinets, R. V. Brezhnev, A. G. Vyrvinskiy // Sovrem. Probl. Distancionnogo Zondirovania Zemli kosm. - 2020. - Vol. 17, Is. 4. - С. 195-203, DOI 10.21046/2070-7401-2020-17-4-195-203 . - ISSN 2070-7401
Аннотация: Evaluation of vegetation bio-productivity, yield prediction, is effectively carried out using simulation models of plant growth. To calculate the value of the aboveground biomass in these models, the leaf area index (LAI) is used. In the agromonitoring service of the Institute of Space and Information Technologies, a productivity forecasting component is being developed using available field map systems showing crops and remote sensing data in the public domain. In this paper, we propose an approach to solving the problem of obtaining the LAI time series during the growing season for agricultural objects. Landsat-8 OLI and Sentinel-2 medium resolution data are used. These data have time resolution restrictions. The use of daily MODIS data is not possible due to their low spatial resolution, taking into account the typical size of agricultural fields of Krasnoyarsk region central part. Algorithms for data fusion with low and medium spatial resolutions are considered to obtain NDVI with the necessary frequency in the absence of medium-resolution data. The construction of the NDVI using data from different systems for LAI estimation required the introduction of additive coefficients for time series alignment using the VEGA Pro service as the base values. The model of calculating LAI from NDVI in linear exponential form is used. The developed approach allows the LAI assessment with the frequency necessary for the work of the predictive model for yield estimating. © 2020 Space Research Institute of the Russian Academy of Sciences. All rights reserved.

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Держатели документа:
Siberian Federal University, Krasnoyarsk, 660074, Russian Federation
Sukachev Institute of Forest SB RAS, Krasnoyarsk Scientific Center SB RAS, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Fedotova, E. V.; Maglinets, Yu. A.; Brezhnev, R. V.; Vyrvinskiy, A. G.

/ V. Margaryan, G. Tsibulskii, E. Fedotova // E3S Web of Conferences : EDP Sciences, 2020. - Vol. 223: 2020 Regional Problems of Earth Remote Sensing, RPERS 2020 (29 September 2020 through 2 October 2020, ) Conference code: 166122. - Ст. 03019, DOI 10.1051/e3sconf/202022303019 . -
Аннотация: The article assesses the change in air temperature and precipitation, and also examines the impact of climate change on crop yields in the Republic of Armenia. As a source of information, the actual data of agrometeorological observations of the GEO "Center for Hydrometeorology and Monitoring"of the Ministry of Environment of the Republic of Armenia and the National Statistical Service are used. As a result of the study, it turned out that there are trends towards an increase in the average annual values of air temperature and heat provision of crops (in total temperatures above 10.0 ° C). In the studied area, there are no regular changes in the amount of atmospheric precipitation over the year. The impact of climate change will only worsen and lead to various problems in water industry, agriculture, energy, health and other sectors. In the republic in 2000-2018 are observed of both the gross harvest and agricultural crops yield increase, with the exception of the tobacco crop. However, this does not mean that agricultural crops are not affected by climate change. © The Authors, published by EDP Sciences, 2020.

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Держатели документа:
Yerevan State University, Department of Physical Geography and Hydrometeorology, Faculty of Geography and Geology, Yerevan, Armenia
Siberian Federal University, Institute of Space and Information Technologies, Chair of Systems of Artificial Intelligence, 660074 Kirenskogo St. 26, Krasnoyarsk, Russian Federation
Sukachev Institute of Forest SB RAS, FRC KSC SB RAS, Academgorodok 50, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Margaryan, V.; Tsibulskii, G.; Fedotova, E.

/ E. A. Babushkina, D. F. Zhirnova, L. V. Belokopytova [et al.] // Forests. - 2021. - Vol. 12, Is. 2. - Ст. 174. - P1-19, DOI 10.3390/f12020174 . - ISSN 1999-4907
Аннотация: Improvement of dendrochronological crops yield reconstruction by separate application of earlywood and latewood width chronologies succeeded in rain-fed semiarid region. (1) Background: Tree-ring width chronologies have been successfully applied for crops yield reconstruction models. We propose application of separated earlywood and latewood width chronologies as possible pre-dictors improving the fitness of reconstruction models. (2) Methods: The generalized yield series of main crops (spring wheat, spring barley, oats) were investigated in rain-fed and irrigated areas in semiarid steppes of South Siberia. Chronologies of earlywood, latewood, and total ring width of Siberian larch (Larix sibirica Ledeb.) growing in forest-steppe in the middle of the study area were tested as predictors of yield reconstruction models. (3) Results: In the rain-fed territory, separation of earlywood and latewood allowed increasing variation of yield explained by reconstruction model from 17.4 to 20.5%, whereas total climatic-driven component of variation was 41.5%. However, both tree-ring based models explained only 7.7% of yield variation in the irrigated territory (climate inclusion increased it to 34.8%). Low temperature sensitivity of larch growth was the main limitation of the model. A 240-year (1780–2019) history of crop failures and yield variation dynamics were estimated from the actual data and the best reconstruction model. (4) Conclusions: Presently in the study region, breeding of the environment-resistant crops varieties compensates the increase of temperature in the yield dynamics, preventing severe harvest losses. Tree-ring based reconstructions may help to understand and forecast response of the crops to the climatic variability, and also the probability of crop failures, particularly in the rain-fed territories. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

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Держатели документа:
Khakass Technical Institute, Siberian Federal University, Abakan, 655017, Russian Federation
Birbal Sahni Institute of Palaeosciences, Lucknow, 226 007, India
Department of Crop Production, Breeding and Seed Development, Krasnoyarsk State Agrarian University, Krasnoyarsk, 660049, Russian Federation
Rectorate, Siberian Federal University, Krasnoyarsk, 660036, Russian Federation
Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Babushkina, E. A.; Zhirnova, D. F.; Belokopytova, L. V.; Mehrotra, N.; Shah, S. K.; Keler, V. V.; Vaganov, E. A.

/ E. A. Babushkina, D. F. Zhirnova, L. V. Belokopytova [et al.] // Forests. - 2021. - Vol. 12, Is. 2. - Ст. 174, DOI 10.3390/f12020174. - Cited References:90. - This research was funded by the Ministry of Science and Higher Education of the Russian Federation, scientific topic code FSRZ-2020-0010, and the Russian Foundation for Basic Research, grant number 20-016-00049. . - ISSN 1999-4907РУБ Forestry

Аннотация: Improvement of dendrochronological crops yield reconstruction by separate application of earlywood and latewood width chronologies succeeded in rain-fed semiarid region. (1) Background: Tree-ring width chronologies have been successfully applied for crops yield reconstruction models. We propose application of separated earlywood and latewood width chronologies as possible predictors improving the fitness of reconstruction models. (2) Methods: The generalized yield series of main crops (spring wheat, spring barley, oats) were investigated in rain-fed and irrigated areas in semiarid steppes of South Siberia. Chronologies of earlywood, latewood, and total ring width of Siberian larch (Larix sibirica Ledeb.) growing in forest-steppe in the middle of the study area were tested as predictors of yield reconstruction models. (3) Results: In the rain-fed territory, separation of earlywood and latewood allowed increasing variation of yield explained by reconstruction model from 17.4 to 20.5%, whereas total climatic-driven component of variation was 41.5%. However, both tree-ring based models explained only 7.7% of yield variation in the irrigated territory (climate inclusion increased it to 34.8%). Low temperature sensitivity of larch growth was the main limitation of the model. A 240-year (1780-2019) history of crop failures and yield variation dynamics were estimated from the actual data and the best reconstruction model. (4) Conclusions: Presently in the study region, breeding of the environment-resistant crops varieties compensates the increase of temperature in the yield dynamics, preventing severe harvest losses. Tree-ring based reconstructions may help to understand and forecast response of the crops to the climatic variability, and also the probability of crop failures, particularly in the rain-fed territories.

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Держатели документа:
Siberian Fed Univ, Khakass Tech Inst, Abakan 655017, Russia.
Birbal Sahni Inst Palaeosci, Lucknow 226007, Uttar Pradesh, India.
Krasnoyarsk State Agr Univ, Dept Crop Prod Breeding & Seed Dev, Krasnoyarsk 660049, Russia.
Siberian Fed Univ, Rectorate, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Sukachev Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Babushkina, Elena A.; Zhirnova, Dina F.; Belokopytova, Liliana, V; Mehrotra, Nivedita; Shah, Santosh K.; Keler, Viktoria V.; Vaganov, Eugene A.; Ministry of Science and Higher Education of the Russian Federation [FSRZ-2020-0010]; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [20-016-00049]

/ V. Margaryan, G. Tsibulskii, E. Fedotova ; ed.: GMT Gennady [et al.] // REGIONAL PROBLEMS OF EARTH REMOTE SENSING (RPERS 2020) : E D P SCIENCES, 2020. - Vol. 223: Conference on Regional Problems of Earth Remote Sensing (RPERS) (SEP 29-OCT 02, 2020, Krasnoyarsk, RUSSIA). - Ст. 03019. - (E3S Web of Conferences), DOI 10.1051/e3sconf/202022303019. - Cited References:7 . - РУБ Environmental Sciences + Geosciences, Multidisciplinary + Remote Sensing

Аннотация: The article assesses the change in air temperature and precipitation, and also examines the impact of climate change on crop yields in the Republic of Armenia. As a source of information, the actual data of agrometeorological observations of the GEO "Center for Hydrometeorology and Monitoring" of the Ministry of Environment of the Republic of Armenia and the National Statistical Service are used. As a result of the study, it turned out that there are trends towards an increase in the average annual values of air temperature and heat provision of crops (in total temperatures above 10.0 degrees C). In the studied area, there are no regular changes in the amount of atmospheric precipitation over the year. The impact of climate change will only worsen and lead to various problems in water industry, agriculture, energy, health and other sectors. In the republic in 2000-2018 are observed of both the gross harvest and agricultural crops yield increase, with the exception of the tobacco crop. However, this does not mean that agricultural crops are not affected by climate change.

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Держатели документа:
Yerevan State Univ, Fac Geog & Geol, Dept Phys Geog & Hydrometeorol, Yerevan, Armenia.
Siberian Fed Univ, Inst Space & Informat Technol, Chair Syst Artificial Intelligence, Kirenskogo St 26, Krasnoyarsk 660074, Russia.
Sukachev Inst Forest SB RAS, FRC KSC SB RAS, Academgorodok 50, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Margaryan, Varduhi; Tsibulskii, Gennady; Fedotova, Elena; Gennady, GMT \ed.\; Noskov, M.V. \ed.\; Maglinets, Y.A. \ed.\

/ G. S. Varaksin, A. A. Vais, V. A. Sokolov [et al.] // IOP Conference Series: Earth and Environmental Science : IOP Publishing Ltd, 2021. - Vol. 839: 5th International Scientific Conference on Agribusiness, Environmental Engineering and Biotechnologies, AGRITECH-V 2021 (16 June 2021 through 19 June 2021, ) Conference code: 172484, Is. 5. - Ст. 052018, DOI 10.1088/1755-1315/839/5/052018 . -
Аннотация: Over the past decades, as a result of the economic use of forests, the impact of fires and biotic factors, the forest cover has undergone significant anthropogenic transformation. In certain forest conditions, reforestation is delayed for a long period, which leads to the accumulation of non-producing forest lands. The aim of the work was to develop a methodology for determining the criteria for accessibility of forest areas for carrying out reforestation activities on the example of the territory of the Taezhinsky forestry of the Krasnoyarsk Territory. The area is dominated by deciduous plantations of average productivity. In the surveyed areas, natural regeneration is represented by soft-leaved species - birch and aspen of medium and large size categories from 1000 to 6000 pcs/ha. There is no natural regeneration of coniferous species. In these areas, it is necessary to create forest crops. The availability of forest areas for carrying out reforestation activities is limited by the transport, ecological and economic accessibility of forest crops. Within the boundaries of transport accessible quarters for carrying out reforestation activities, areas are identified that are suitable for soil and forest growing conditions for creating forest cultures with promising forest inventory characteristics not lower than grade III. The presented conditions correspond, first of all, to the green moss and forb groups of forest types. These plots constitute the second zone of silvicultural zoning, that is, an outstanding characteristic within the transport accessible quarters. The first stage of development includes forest areas of the II class of bonitet and higher, the second stage - III class of bonitet. Areas of quality class IV and below are reserved for natural reforestation. © Published under licence by IOP Publishing Ltd.

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Держатели документа:
Krasnoyarsk State Agrarian University, 90 Mira ave., Krasnoyarsk, 660049, Russian Federation
Sukachev Institute of Forest SB RAS, Federal Research Center Krasnoyarsk Science Center SB RAS, No.50, p.28, Krasnoyarsk, Akademgorodok, 660036, Russian Federation
Reshetnev Siberian State University of Science and Technology, 31 Krasnoyarsky Rabochy Avenue, Krasnoyarsk, 660037, Russian Federation

Доп.точки доступа:
Varaksin, G. S.; Vais, A. A.; Sokolov, V. A.; Vtyurina, O. P.; Yelizentsev, E. A.; Repyakh, K. K.

[Текст] / Л. С. Пшеничникова, А. А. Онучин, Р. С. Собачкин, А. Е. Петренко // Сибирский лесной журнал. - 2022. - № 3. - С. 24-33, DOI 10.15372/SJFS20220303 . - ISSN 2311-1410

ГРНТИ

68

Аннотация: Проанализирована динамика таксационных показателей, отпада и прироста древесины 35-летних разногустотных культур сосны обыкновенной ( Рinus sylvestris L.), созданных в 1982 г. сотрудниками Института леса им. В. Н. Сукачева СО РАН под руководством А. И. Бузыкина на бывших сельскохозяйственных землях в Большемуртинском районе Красноярского края. Начальная густота культур варьировала в широком диапазоне (от 0.5 до 128.0 тыс. шт./га). Дана оценка влияния густоты деревьев на рост и продуктивность молодых насаждений сосны в возрасте 2, 5, 12, 15, 20, 25, 30 и 35 лет. Установлено, что уже с 5-летнего возраста наблюдается процесс интенсивного самоизреживания деревьев, при начальной густоте посадки 90.0 тыс. шт./га к возрасту 35 лет она уменьшилась до 10 тыс. шт./га. При густоте посадки менее 10 тыс. шт./га интенсивность самоизреживания существенно ниже и густота культур за аналогичный период уменьшилась менее чем в 2 раза. Показано, что на начальном этапе роста древостоев наблюдается увеличение прироста с начальной густотой посадки, с выходом на плато при густоте свыше 70.0 тыс. шт./га. С возрастом выход прироста на плато отмечается при меньшей густоте начальной посадки. Через 20 лет максимальный прирост наблюдался в вариантах посадки с начальной густотой от 50.0 до 70.0 тыс. шт./га, к 30 годам он сместился к диапазону густоты от 30.0 до 50.0 тыс. шт./га. Установлена зависимость между текущим ежегодным приростом, возрастом сосновых культур, начальной густотой посадки и текущей густотой насаждений. В целом прослеживается тенденция увеличения прироста с возрастом, однако для культур с начальной густотой посадки свыше 90 тыс. шт./га в возрастном интервале от 15 до 22 лет отмечается снижение текущего прироста, что, очевидно, связано с усилением конкурентных отношений в ценозе. Затем в результате снижения конкуренции вследствие самоизреживания перегущенных культур их прирост стал повышаться, однако темпы его роста отставали от таковых у культур с меньшей густотой начальной посадки. Таким образом, можно предположить, что высокие темпы депонирования углерода на начальном этапе создания культур повышенной густоты могут сохраняться при условии периодических уходов регулирующих густоту насаждений
The dynamics of forest inventory indicators, attrition and wood growth of 35-year-old pine Рinus sylvestris L. crops with various density are analyzed, Pine crops were created in 1982 by V. N. Sukachev Institute of Forest Russian Academy of Sciences, Siberian Branch under the leadership of A. I. Buzykin on former agricultural lands in Bolshemurtinsky district of Krasnoyarsk Krai. The initial density of the stands varied in a wide range from 0.5 to 128.0 thousand trees per ha. The assessment of the stand density influence on the growth and productivity of young pine stands at the age of 2, 5, 12, 15, 20, 25, 30 and 35 years old was carried out. It has been established that since the age of five, the process of intensive self-thinning of trees has been observed, at initial planting density 90.0 thousand trees/ha the density decreased to 10 thousand trees/ha by the age of 35 years. At the initial density less than 10 thousand trees/ha the self-thinning intensity is significantly lower and the stand density has decreased by less than 2 times over the same period. It is shown that at the initial stage of stand growth there is a growth increase with the initial planting density, reaching the plateau at a density of over 70.0 thousand trees/ha. With age reaching the plateau occurs with the lower initial density. At the age of 20, the maximum increase was at the initial density from 50.0 to 70.0 thousand trees/ha, by the age of 30 it shifted to a density range from 30.0 to 50.0 thousand trees/ha. The relationship between the current annual increment, age, and the initial and actual densities of pine crops has been established. In the age range studied there is a tendency of increasing the increment with age, although for the crops with the initial density higher than 90 thousand trees per ha in the range of 15 to 22 years the decrease of annual increment is observed, which is evidently connected to the escalating of concurrent relations in cenosis. Thus, it can be suggested that high rates of carbon deposition at the initial stage of high-density stands creation can be maintained under the condition of periodic thinning, regulating the stand density.

РИНЦ

Держатели документа:
ИЛ СО РАН : 660036, Красноярск, Академгородок, 50, стр. 28

Доп.точки доступа:
Онучин, Александр Александрович; Onuchin, Alexandr Alexandrovich; Собачкин, Роман Сергеевич; Sobachkin, Roman Sergyeyevich; Петренко, Алексей Евгеньевич; Petrenko, Aleksey Evgen'yevich; Pshenichnikova, Larisa Semenovna

[Текст] : научное издание / Ю. В. Салцевич, Л. В. Буряк, А. Н. Головина, Е. А. Кукавская // Сибирский лесной журнал. - 2023. - № 6. - С. 63-75, DOI 10.15372/SJFS20230607 . - ISSN 2311-1410
   Перевод заглавия: ASSESSMENT OF THE STATE OF FORESTS DISTURBED BY FIRES, LOGGING, AND INSECTS IN THE FOOTHILLS OF THE EASTERN SAYAN MOUNTAINS

ГРНТИ

68.47.41

Аннотация: Проведена оценка состояния нарушенных пожарами, рубками и насекомыми-вредителями участков лесных земель в предгорьях Восточного Саяна в присущих району исследования лесных формациях - кедровой ( Pinus sibirica Du Tour), пихтовой ( Abies sibirica Ledeb.), сосновой ( Pinus sylvestris L.), еловой ( Picea obovata Ledeb.), лиственничной ( Larix sibirica Ledeb.), березовой ( Betula pendula Roth), осиновой ( Populus tremula L.), а также на участках лесных культур. Установлено, что вследствие воздействия пожаров, насекомых-вредителей, рубок и ветровалов происходит ухудшение санитарного состояния лесов. Выявлены закономерности естественного лесовосстановления на нарушенных участках лесных земель. Отмечено, что в результате разрастания густого травяного покрова, образования мощной подстилки, разрастания мха сфагнума ( Sphagnum L.) и возникновения частых пожаров на большей части нарушенных участков лесных земель отмечается неудовлетворительное лесовосстановление. На участках с достаточным количеством жизнеспособного подроста естественное лесовозобновление происходит вегетативным способом мягколиственными малоценными древесными породами (березой и осиной), которые, в свою очередь, угнетают молодое неокрепшее поколение хвойных деревьев (в том числе лесных культур) за счет затенения и конкурентной борьбы за почвенные элементы питания
An assessment of the state of forest lands disturbed by fires, logging and insects in the foothills of the Eastern Sayan Mountains in the forest formations inherent in the study area (Siberian stone pine ( Pinus sibirica Du Tour), fir ( Abies sibirica Ledeb.), Scots pine ( Pinus sylvestris L.), spruce ( Picea obovata Ledeb.), larch ( Larix sibirica Ledeb.), birch ( Betula pendula Roth), aspen ( Populus tremula L.)) as well as in forest crops was carried out. The impact of fires, insects, logging, and windfalls was found to result in degradation of the forest health conditions of all forest formations within the boundaries of the foothills of the Eastern Sayan Mountains. Characteristics of natural reforestation on disturbed areas of forest lands were revealed. Unsatisfactory reforestation was observed on most of the disturbed areas of forest lands due to proliferation of the dense grass cover, the formation of a thick duff, the growth of sphagnum (Sphagnum L.) and the occurrence of frequent fires. In cases where there is a sufficient amount of healthy regeneration, natural reforestation occurs by vegetative propagation of soft-leaved low-value tree species (birch and aspen), which, in turn, inhibit the young immature generation of coniferous trees (including forest plantations) due to shading and competition for soil nutrients

РИНЦ

Держатели документа:
ИЛ СО РАН : 660036, Красноярск, Академгородок, 50, стр. 28

Доп.точки доступа:
Буряк, Людмила Викторовна; Buryak L.V.; Головина, А.Н.; Кукавская, Елена Александровна; Kukavskaya, Elena Alexandrovna