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

/ F.Z. Glebov // Climatic Change. - 2002. - Vol. 55, № 1-2. - С. 175-181
Аннотация: The developmental history of peatland and dry land vegetation within the Ob-Vasugan watershed of Western Siberia was characterized according to features of the plant communities and climatic changes which were revealed by stratigraphic, spore-pollen and C-14 (carbon) data obtained from a vertical peat profile 'Vodorasdel'. Changes in the paleoecological environment over the last 10000 years were divided into five periods. The climate was characterized in the Holocene according to these periods. At the watershed studied, peatland-forming processes started about 9510 years ago resulting in 550 cm of peat accumulation. The rate of peat accumulation within the watershed decreased over time from 1.9-0.3 mm year(-1).

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Russian Acad Sci, VN Sukachev Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Karpenko, Lyudmila Vasil'yevna; Карпенко, Людмила Васильевна; Dashkovskaya, Irina Samuilovna; Дашковская, Ирина Соломоновна; Глебов, Феликс Зиновьевич

: материалы временных коллективов / O. A. Zyryanova, T. N. Bugayenko, N. N. Bugayenko, Y. Matsuura // Proceedings of the seventh symposium on the joint Siberian permafrost studies between Japan and Russia in 1998 : Hokkaido University, 1999. - С. 59-66. - Библиогр. в конце ст.
Аннотация: In 3-4 years after the fire the number of the vascular plants is 1:2-1.3 times more as compared to that of radial larch association. Both the appearance of the new plant species and their families as well as the restitution on beforefire plants are responsible for the high level of species diversity on the initial stages of progressive successions. Temporal and spatial structure of the radical larch community is destroyed in two years after the fire.

Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок 50/28

Доп.точки доступа:
Bugayenko, Tat'yana Nikolayevna; Бугаенко, Татьяна Николаевна; Bugayenko, N.N.; Бугаенко Н.Н.; Matsuura, Y.; Матсуура У.; Зырянова Ольга Александровна
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: материалы временных коллективов / O. V. Drobushevskaya, V. G. Tsaregorodtsev // Climatic changes and their impact on boreal and temperate forests: Abstracts of the International conference (June 5-7, Ekaterinburg, Russia) : Ural State Forest Engineering University, 2006. - С. 23

Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок 50/28

Доп.точки доступа:
Tsaregorodtsev, V.G.; Царегородцев В.Г.; Дробушевская, Ольга Владимировна

/ T. M. Ovchinnikova [et al.] // Contemp. Probl. Ecol. - 2013. - Vol. 6, Is. 2. - P170-176, DOI 10.1134/S1995425513020133. - Cited References: 8. - This work was supported by the Russian Foundation for Basic Research (grant no. 10-04-00256). . - 7. - ISSN 1995-4255РУБ Ecology

Аннотация: Based on the concept of competition for resources, the distribution of trees upon reforestation in windfall areas is studied. As a theoretical model for competition, a Zipf-Pareto model of ranking the distribution of resources is used. Analysis shows that the processes resulting from competitive interactions between the trees of different species proceed slowly in a windfall area where coniferous species get replaced by deciduous ones. In the territory where deciduous species initially dominated, competitive interactions between trees of different species turn out to be formed almost immediately upon natural reforestation after the windfall. By the time the ratio of species stabilizes and becomes a steady state, the ranks of individual species also stabilize. This result is obtained on the basis of a quantitative assessment of the change in leadership between competing species in time using Spearman's rank correlation coefficient.

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Держатели документа:
[Ovchinnikova, T. M.
Sotnichenko, D. L.
Sukhovolskiy, V. G.] Russian Acad Sci, Siberian Branch, Sukachev Inst Forest, Krasnoyarsk 660036, Russia
[Mochalov, S. A.] Ural State Forestry Engn Univ, Ekaterinburg 620100, Russia

Доп.точки доступа:
Ovchinnikova, T.M.; Sotnichenko, D.L.; Mochalov, S.A.; Sukhovolskiy, V.G.

[Text] / A. S. Isaev, V. G. Soukhovolsky, R. G. Khlebopros // Contemp. Probl. Ecol. - 2011. - Vol. 4, Is. 7. - P699-705, DOI 10.1134/S1995425511070010. - Cited References: 14. - The work was financially supported by the Russian Foundation for Basic Research (grants no. 08-04-00217 and 11-04-00173). . - 7. - ISSN 1995-4255РУБ Ecology

Аннотация: Methodological bases of optimization modeling approach are considered in regard to describing critical phenomena in forest ecosystems. Models of insects' outbreaks, forest successions, forest fires as second order phase transitions are proposed. It is shown that there is fair correlation between model calculations and observations data.

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Держатели документа:
[Isaev, A. S.] Russian Acad Sci, Ctr Problems Ecol & Prod Forests, Moscow 117997, Russia
[Soukhovolsky, V. G.] Russian Acad Sci, Siberian Branch, Sukachev Inst Forest, Krasnoyarsk 660036, Russia
[Soukhovolsky, V. G.
Khlebopros, R. G.] Russian Acad Sci, Int Ctr Res Extreme States Organism, Siberian Branch, Krasnoyarsk Res Ctr, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Isaev, A.S.; Soukhovolsky, V.G.; Khlebopros, R.G.

[Text] / Y. N. Krasnoshchekov [et al.] // Contemp. Probl. Ecol. - 2010. - Vol. 3, Is. 2. - P161-166, DOI 10.1134/S1995425510020049. - Cited References: 16. - The research was supported by Russian Foundation for Basic Research, grant no. 08-04-00027a, and Siberian Branch of Russian Academy of Sciences, Integration Project no. 5.21. . - 6. - ISSN 1995-4255РУБ Ecology

Аннотация: The post-fire dynamics of Eastern Cisbaikalian forest ecosystems is analyzed. Forest productivity is shown to be reduced by litter and humus ground fires. The study characterizes understory and soil changes after fires of various severities and remoteness.

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Держатели документа:
[Krasnoshchekov, Yu. N.
Evdokimenko, M. D.
Cherednikova, Yu. S.] Russian Acad Sci, Sukachev Inst Forest, Siberian Branch, Krasnoyarsk 630036, Russia
[Boloneva, M. V.] Russian Acad Sci, Inst Gen & Expt Biol, Siberian Branch, Ulan Ude 670047, Russia

Доп.точки доступа:
Krasnoshchekov, Y.N.; Evdokimenko, M.D.; Cherednikova, Y.S.; Boloneva, M.V.

[Text] / M. A. Sofronov, A. V. Volokitina, T. M. Sofronova // Contemp. Probl. Ecol. - 2008. - Vol. 1, Is. 3. - P304-309, DOI 10.1134/S199542550803003X. - Cited References: 8 . - 6. - ISSN 1995-4255РУБ Ecology

Аннотация: The southern coast of Baikal is characterized by the most humid climate in the Baikal region. Precipitation falls mainly on summer, thus reducing the actual of fire occurrence in mountain forests of the region. However, since 1989 the fire occurrence has been increased and disastrous crown fires have become more frequent, especially in the west. It is shown that fire occurrence is a function of the number, duration of rainless periods and monthly sums of rain precipitation, which have large amplitude of changes from year to year. Progressive pyrogenic successions in dark coniferous forests take place mostly without usual replacement by small-leaved tree species at the expense of successful regeneration of Pinus sibirica (in the western Khamar-Daban mountains) and Abies sibirica (in the central part) on the burnt areas during 15-25 years.

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Держатели документа:
[Sofronov, M. A.
Volokitina, A. V.
Sofronova, T. M.] RAS, Siberian Branch, Sukachev Inst Forest, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Sofronov, M.A.; Volokitina, A.V.; Sofronova, T.M.

[Text] / V. I. Kharuk [et al.] // Russ. J. Ecol. - 2005. - Vol. 36, Is. 3. - P164-170, DOI 10.1007/s11184-005-0055-5. - Cited References: 13 . - 7. - ISSN 1067-4136РУБ Ecology

Аннотация: The expansion of so-called evergreen conifers (EGCs), including Siberian stone pine, spruce, and fir, along the transect oriented from the boundary of the larch-dominated zone (LDZ; mixed forests of the Yenisei Ridge) to its center has been studied. The normalized dispersal coefficient calculated as K-i = (n(i) - N-i)/(n(i) + N-i), where ni and Ni are the relative numbers of the ith species in the undergrowth and the upper layer, respectively, serves as an indicator of the expansion. It has been found that the Ki values for EGCs (and birch) are higher than the Ki of larch even in the zone absolutely dominated by larch, where the relative numbers of EGCs in the upper layer is less than 1%. The EGC undergrowth has mainly been formed during the past 20-30 years, which is correlated with the trend of summer temperatures The spread of EGCs in the LDZ depends on the frequency of forest fires. The decrease in the time intervals between fires in the 20th century to 65 years (versus 100 years in the 19th century) may have prevented the expansion of competing species in the LDZ. The results obtained indicate that EGCs and birch penetrate into the zone traditionally dominated by larch, which is related to climatic changes during the past three decades. At the same time, tree stand density is increasing in the forest-tundra ecotone, and larch is spreading further into the tundra zone.

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Держатели документа:
Russian Acad Sci, Siberian Div, Sukachev Inst Forest, Krasnoyarsk 660036, Russia
NASA, Goddard Space Ctr, Greenbelt, MD 20771 USA

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

[Text] / P. A. Tsvetkov // Russ. J. Ecol. - 2004. - Vol. 35, Is. 4. - P224-229, DOI 10.1023/B:RUSE.0000033790.50606.54. - Cited References: 25 . - 6. - ISSN 1067-4136РУБ Ecology

Аннотация: The pyrophytic properties of the larch Larix gmelinii (Rupr.) Rupr. growing in the northern taiga of central Siberia have been studied. It has been found that, although the trees are highly combustible and fire resistance of tree stands is low, the species is highly pyrophytic, which allows it to retain its geographic range. At early stages of postfire successions, the larch exhibits characteristics of pyrogenic explerent and is subject to r-selection. When forest restoration is close to completion, the species passes into the patient state and acquires properties subject to K-selection.

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Russian Acad Sci, Sukachev Inst Forestry, Siberian Div, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Tsvetkov, P.A.

[Text] / S. G. Prokushkin [et al.] // Biol. Bull. - 2004. - Vol. 31, Is. 1. - P42-50, DOI 10.1023/B:BIBU.0000014354.31389.6c. - Cited References: 26 . - 9. - ISSN 1062-3590РУБ Biology

Аннотация: It is shown that larch of the prefire generation is the main edificator at the early stages of progressive successions in burned-out areas. Its environment-forming effect manifests itself most strongly in the phytogenic field of living trees, where edaphic conditions similar to those in primary larch forests are formed within ten years after the fire. This is accompanied by an increase in the numbers of microorganisms utilizing organic and mineral nitrogen, as well as in the rate of nitrogen mineralization in plant microgroups of this zone. Hence, living trees remaining in a burned-out area promote restoration of the initial edaphic conditions.

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Держатели документа:
Russian Acad Sci, Siberian Div, Sukachev Inst Forest, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Prokushkin, S.G.; Bugaenko, T.N.; Sorokin, N.D.; Kaverzina, L.N.; Zyryanova, O.A.

[Text] / V. I. Kharuk [et al.] // Can. J. Remote Sens. - 2003. - Vol. 29, Is. 2. - P286-297. - Cited References: 15 . - 12. - ISSN 1712-7971РУБ Remote Sensing

Аннотация: Landsat data were used to examine the effect of large-scale insect outbreaks in the forests of southern Siberia. Two insect outbreaks were studied: Ket-Chulym, similar to1.5 million hectares of forest damaged between 1954 and 1957; and Priangar'e, similar to0.5-0.7 million hectares of forest damaged between 1994 and 1996. Landsat scenes from 1980 to 2000 were analyzed. The optimal Landsat channels combination for detecting damage classes were bands 2 (0.525-0.605 mum), 4 (0.750-0.900 mum), 5 (1.55-1.75 mum), and 6 (10.40-12.50 mum). The damage to the forests caused an increase inradiometric temperature (20.20 +/- 0.04degreesC for damaged forests versus 19.47 +/- 0.02degreesC for healthy forests). The following pattern of forest succession was observed in the outbreak areas: dead stands with dense grass and shrub communities, burn scars, grass and shrub formations, open woodlands, closed young and middle-age birch stands, mature birch stands, and mixed conifer-deciduous stands. Forest regeneration goes through long-term species-change successions, and the rate depends on the size of the outbreak area. On-ground mapping after the outbreak and later Landsat analysis showed that even 45 years after the Ket-Chulym outbreak the area of forests did not increase. In the Priangar'e area approximately 45% of damaged forests have recovered.

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Держатели документа:
NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
VN Sukachev Inst Forest, Krasnoyarsk, Russia

Доп.точки доступа:
Kharuk, V.I.; Ranson, K.J.; Kuz'michev, V.V.; Im, S...

[Text] / I. A. Korotkov, Y. N. Krasnoshchekov // Russ. J. Ecol. - 1998. - Vol. 29, Is. 4. - P230-235. - Cited References: 14 . - 6. - ISSN 1067-4136РУБ Ecology

Аннотация: Natural colonization of the steppe by forest vegetation is often observed in the contact zone between forest and steppe communities in northern Mongolia. Such successions appear owing to cyclic changes in the climate humidity. It was shown that morphological features of noncalcareous chernozems and their dynamic properties (pH, total exchangeable cations, humus composition) change under the influence of forest vegetation. These changes, however, are insufficient for attributing such chernozems to a new category.

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Держатели документа:
Russian Acad Sci, Siberian Div, Sukachev Inst Forestry, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Korotkov, I.A.; Krasnoshchekov, Y.N.

[Текст] / V. D. Perevoznikova // Izv. Akad. Nauk Ser. Biol. - 1998. - Is. 2. - С. 283-291. - Cited References: 10 . - 9. - ISSN 0002-3329РУБ Biology

Аннотация: A dynamics of grass vegetation formation in dark coniferous and pine forest felling sites of different antiquity in Siberia has been studied. At the initial stages of succession, grass serves as an edifier of the newly formed community and levels the heterogeneity of edaphic background due to forest logging. The conditions are created for redistribution of environmental resources and utilization of the after-felling remains. Besides, grass growth facilitates soil decompaction at the felling sites that suffered a strong technogenic pressure. Vegetation in felling sites in the dark coniferous forests occurs in mosaic patterns with introduction of explerent species, and proceeds much faster than in the pine forests. Trees and shrubs grow better in the dark coniferous forest felling sites. Grass plays a leading ecological and coenotic role at an early stage of forest successions of south Siberian taiga despite some differences in a rate and intensity of its growth in the dark coniferous and pine forest felling sites.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Sukachev Inst Forest, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Perevoznikova, V.D.

[Text] / Y. N. Krasnoshchekov, M. D. Evdokimenko, Y. S. Cherednikova // Contemp. Probl. Ecol. - 2013. - Vol. 6, Is. 5. - P477-485, DOI 10.1134/S1995425513050053. - Cited References: 17 . - 9. - ISSN 1995-4255РУБ Ecology

Аннотация: The data of experimental studies on the after-fire digression of subtaiga forest-steppe pine forests in the Southwestern Baikal Region are analyzed. Ground fires of the litter-humus type are ascertained to be the most destructive factor in the dynamics of pine forests. The effect of a ground fire is accompanied with the drying of trees, and the vital capacity of those that survived the fire depends on the severity of fire damages. The characteristic of the lower vegetation layers and its dynamics under the effect of moderately intense fires are presented. Ground fires are shown to negatively affect the change in the reserve qualitative fractional structure of organogenic soil layers and their chemical composition.

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Держатели документа:
[Krasnoshchekov, Yu. N.
Evdokimenko, M. D.
Cherednikova, Yu. S.] Russian Acad Sci, Siberian Branch, Sukachev Inst Forest, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Krasnoshchekov, Yu. N.; Краснощеков, Юрий Николаевич; Evdokimenko, M. D.; Евдокименко, Михаил Данилович; Cherednikova, Yu. S.; Чередникова, Юлия Сергеевна

[Text] / N. M. Tchebakova, E. I. Parfenova ; ed.: A Amaro, D Reed, Reed, // MODELLING FOREST SYSTEMS : CABI PUBLISHING, 2003. - Workshop on Interface between Reality, Modelling and the Parameter Estimation Process (JUN 02-05, 2002, Sesimbra, PORTUGAL). - P189-197, DOI 10.1079/9780851996936.0189. - Cited References: 14 . - 9. - ISBN 0-85199-693-0РУБ Forestry + Mathematics, Interdisciplinary Applications

Аннотация: Local-level, bioclimatic regression models that relate stand characteristics (forest composition, height, site quality class and wood stocking) to site climate (temperature sums, base 5 degrees C, and dryness index) were developed to predict the stand structure of dark-needled forest (Pinus sibirica and Abies sibirica) climax successions and their transformations in a changing climate over the Sayan mountain range in southern Siberia. The models explained up to 80% of the variation in forest growth and productivity characteristics. Productivity varied widely and depended on heat supply rather than moisture. Stand tree species composition depended oil moisture: dark-needled species and light-needled tree species (Pinus sylvestris) were separated by a dryness index value of 1.0. Living phytomass was calculated from a wood stocking model. Tree heights and living phytomass were mapped over the mountain range under current climate conditions and a regional climate change scenario. The model predicts that total dark-needled forest phytomass will decrease by 17% in a warmed climate.

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Держатели документа:
Russian Acad Sci, Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Tchebakova, N.M.; Parfenova, E.I.; Amaro, A \ed.\; Reed, D \ed.\; Reed, \ed.\

[Текст] / V. M. Yanovskii, Y. N. Baranchikov // Zool. Zhurnal. - 1999. - Vol. 78, Is. 7. - С. 889-890. - Cited References: 8 . - 2. - ISSN 0044-5134РУБ Zoology

Аннотация: The possibility of Monochamus urussovi Fisch to pass through all stages of development on aspen (Populus tremula L.) and birch (Betula pubescens L.) trees, apart from conifers, was shown. The aspen was registered as a host plant of this beetle for the first time. The ability to develop on aspen and birch is supposed to develop as an adaptation to successions in the course of which the native coniferous forests are replaced with secondary deciduous ones.

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Держатели документа:
Russian Acad Sci, Inst Forestry, Siberian Div, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Yanovskii, V.M.; Baranchikov, Y.N.

/ A. Hofgaard [et al.] // Applied Vegetation Science. - 2010. - Vol. 13, Is. 4. - P460-472, DOI 10.1111/j.1654-109X.2010.01086.x . - ISSN 1402-2001
Аннотация: Question: Is there a need for disturbance mapping integrated in the CircumBoreal Vegetation Mapping Program? Location: Eurasian boreal forest. Disturbance and mapping: The boreal zone is characterized by a multitude of natural and anthropogenic disturbance agents with importance over a wide range of spatial and temporal scales. Disturbance is a prime driver of succession in most of the boreal zone, producing landscape diversity characterized by a large-scale vegetation mosaic of early to late succession states. When mapping the circumboreal vegetation, spatial extent, time involved from disturbance to recovered condition and likelihood of interacting disturbance types are crucial for how current vegetation is interpreted and subsequently included as map characteristics. In this paper we present examples from the boreal zone where natural and/or anthropogenic disturbance regimes dominate the state and distribution of vegetation, and possibilities for assessing the nature and extent of the disturbed regions using remotely sensed data. Conclusion: Disturbed vegetation occupies large areas in the boreal zone and related vegetation successions should be adequately represented when mapping the zone. In regions where the 'potential natural vegetation' is a hypothetical reconstruction from remnants of 'natural' vegetation it would be preferable to use the concept of 'actual real vegetation' for which remote sensing at coarse, medium and fine resolution is an efficient tool. The Land Cover Classification System (LCCS) may offer sufficient flexibility to incorporate information about the disturbance of circumboreal vegetation. В© 2010 International Association for Vegetation Science.

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Держатели документа:
Scott Polar Research Institute, University of Cambridge, United Kingdom
Norwegian Institute for Nature Research, Trondheim, Norway
Norwegian Institute for Nature Research, Tromso, Norway
Faculty of Geography, M.V. Lomonosov Moscow State University, Moscow, Russian Federation
Centre on the Problems of Ecology and Productivity of Forests, Russian Academy of Sciences, Moscow, Russian Federation
Northern Research Institute, Tromso, Norway
Institute of the Industrial Ecology if the North, Kola Science Center, Russian Academy of Sciences, Russian Federation
Sukachev Forest Institute, Akademgorodok Krasnoyarsk, Russian Federation

Доп.точки доступа:
Hofgaard, A.; Rees, G.; Tommervik, H.; Tutubalina, O.; Golubeva, E.; Lukina, N.; Hogda, K.A.; Karlsen, S.R.; Isaeva, L.; Kharuk, V.

/ D. I. Nazimova, V. G. Tsaregorodtsev, N. M. Andreyeva // Geography and Natural Resources. - 2010. - Vol. 31, Is. 2. - P124-131, DOI 10.1016/j.gnr.2010.06.006 . - ISSN 1875-3728
Аннотация: Data from the " Biome" information system were used to construct an ordination of zonal categories of vegetation cover in southern Siberia along the axes of heat supply and continentality. The changes of climate that occurred from the end of the 1960. s to 2007 are estimated. It is shown that they can lead to transformation of the composition of potential forest vegetation in a number of regions. We discuss the forecasted and observed variants of long-term successions in different sectoral-zonal classes of subtaiga and forest-steppe, including the risk of a reduction in the areas of separate forest-forming species. В© 2010.

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Держатели документа:
Institute of Forest SB RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Nazimova, D.I.; Tsaregorodtsev, V.G.; Andreyeva, N.M.

/ D. I. Nazimova [et al.] // Unasylva. - 2009. - Vol. 60, Is. 231-232. - P34-36 . - ISSN 0041-6436
Аннотация: The post-fire succession over the past 350 years have been analyzed so as to predict the effect of the increase in fires that is being anticipated to go hand in hand with climate change in southern Siberia, Russian Federation. Succession is defined to be the gradual supplanting of one plant community by another as conditions change either by natural means or an alter disturbance. A number of stages are being noticed in most successions on which different collections of species dominate. Finally, the last part of it is when the species composition no longer changes with time in the absence of natural or human-caused disturbances. It has been found out that the predicted increase in fires resulting from climate change in southern Siberia will probably reduce the number of larch and shade-tolerant conifers in favor of Scots pine, birch and aspen, as well as with non-tree plant communities of bushes, grasses and herbs. The continues warm and humid climate will lead to some changes in the composition of forest ecosystems that are not in favor economically. Thus, it is now necessary to have management plans for the plantations in Siberian pine to consider the increased risk of destructive surface fires and focus on fire protection.

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Держатели документа:
V.N. Sukachev Institute of Forest, Siberian Branch of Russian Academy of Sciences (SBRAS), Krasnoyarsk, Russian Federation

Доп.точки доступа:
Nazimova, D.I.; Drobushevskaya, O.V.; Kofman, G.B.; Konovalova, M.E.

/ V. A. Alexeyev // Science of the Total Environment. - 1995. - Vol. 160-161. - P605-617, DOI 10.1016/0048-9697(95)04395-H . - ISSN 0048-9697
Аннотация: As are other parts of the earth, arctic and subarctic territories are influenced by global, regional, and local air pollution. In Europe, the greatest load of airborne contaminants is observed in terrestrial ecosystems of the Kola Peninsula; in Asia, the greatest load is found in ecosystems of the Taimyr Peninsula, where large copper-nickel smelters are functioning. The studies described here for these regions encompassed local and regional deposition of pollutants (mainly sulfates and trace metals); changes in the composition, structure, productivity, and status of forest vegetation; morphological reactions of plant species and their regenerative activity; reforestation processes; successions; element composition of plants and soils; and biological activity of soils. The key findings of long-term studies are as follows. First, the symptoms of plant damage by air and soil pollutants in arctic and temperate zones are the same. Second, plants weakened by natural stresses have lower thresholds of sensitivity to airborn pollutants. Third, rapid destruction of northern plant communities by pollutants is often connected with a wide distribution of sensitive species (e.g., lichens) and previously weakened plants. Fourth, the specific structure of far northern forest and tundra ecosystems (in particular, open canopy and/or thin photosynthetic layer) and the severe climate produce some peculiarities in plant damage, namely (1) a large difference in the rate and intensity of damage to upper and lower parts of plants if the green parts are above or under snow in the winter, (2) simultaneous damage of different parts of stands that are above snow cover, and (3) an increase in the krummholz effect (stunted, low-lying branches) for evergreen coniferous trees. These findings were obtained for conditions of evident airborne contamination. The impact of low level regional pollutants on arctic and subartic vegetation is not sufficiently understood.

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Держатели документа:
Sukachev Institute for Forest Research, Akademgorodok, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Alexeyev, V.A.