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

[Text] / Y. . Nakai [et al.] // Theor. Appl. Climatol. - 2008. - Vol. 93, Is. 03.04.2013. - P133-147, DOI 10.1007/s00704-007-0337-x. - Cited References: 47. - We gratefully thank V. Borovikov and other colleagues of the Sukachev Institute of Forest and the Evenki Forest Management Agency in Tura for their support with logistics and instrumentation. We also thank T. Yorisaki, H. Tanaka, and the staff of "Climatec Inc.'' for system integration and instrumentation. We acknowledge Y. Ohtani, Y. Yasuda, and T. Watanabe for providing software resources. N. Saigusa encouraged us greatly. This research was supported by the "Global environment research fund S-1'', as "Integrated Study for Terrestrial Carbon Management of Asia in the 21th Century based on Scientific Advancements (FY2002-2006)''. . - 15. - ISSN 0177-798XРУБ Meteorology & Atmospheric Sciences

Аннотация: Gmelin larch ( Larix gmelinii) forests are representative vegetation in the continuous permafrost region of Central Siberia. Information on the carbon budget is still limited for this Siberian larch taiga in comparison to boreal forests in other regions, while the larch forests are expected to play a key role in the global carbon balance due to their wide distribution over North-East Eurasia. The authors reported results of eddy covariance CO2 flux measurements at a mature Gmelin larch stand in Central Siberia, Russia (64 degrees 16'N, 100 degrees 12'E, 250m a.s.l.). The measurements were conducted during one growing season (June-early September in 2004). CO2 uptake was initiated in early June and increased sharply until late June, which was closely related to the phenology of the larch trees (i.e., bud-break and needle flush). Maximum half-hourly net CO2 uptake was similar to 6 mu mol m(-2) s(-1). Maximum daily net uptake of similar to 2 g C m(-2) day(-1) occurred at the end of June and in mid-July. Cumulative net uptake was 76-78 g C m(-2), indicating that the mature larch forest acted as a net sink for CO2 during the growing season (91 days). In comparison with other boreal forests, however, the magnitude of net CO2 uptake and night-time release of the forest, and cumulative net CO2 uptake were lower. We suggest that lower net ecosystem CO2 uptake of the study stand was primarily associated with low leaf area index.

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Держатели документа:
[Nakai, Y.] Forestry & Forest Prod Res Inst, Dept Meteorol Environm, Tsukuba, Ibaraki 3058687, Japan
[Kajimoto, T.] Forestry & Forest Prod Res Inst, Kyushu Res Ctr, Kumamoto, Japan
[Abaimov, A. P.
Zyryanova, O. A.] Russian Acad Sci, Siberian Branch, VN Sukachev Inst Forest, Krasnoyarsk, Russia
[Yamamoto, S.] Okayama Univ, Okayama, Japan

Доп.точки доступа:
Nakai, Y...; Matsuura, Y...; Kajimoto, T...; Abaimov, A.P.; Абаимов Анатолий Платонович; Yamamoto, S...; Zyryanova, O.A.

[Text] / N. N. Vygodskaya [et al.] // Environ. Res. Lett. - 2007. - Vol. 2, Is. 4. - Ст. 45033, DOI 10.1088/1748-9326/2/4/045033. - Cited References: 33 . - 7. - ISSN 1748-9326РУБ Environmental Sciences + Meteorology & Atmospheric Sciences

Аннотация: The climate system and terrestrial ecosystems interact as they change. In northern Eurasia these interactions are especially strong, span all spatial and timescales, and thus have become the subject of an international program: the Northern Eurasia Earth Science Partnership Initiative (NEESPI). Without trying to cover all areas of these interactions, this paper introduces three examples of the principal micrometeorological, mesometeorological and subcontinental feedbacks that control climate-terrestrial ecosystem interactions in the boreal zone of northern Eurasia. Positive and negative feedbacks of forest paludification, of windthrow, and of climate-forced displacement of vegetation zones are presented. Moreover the interplay of different scale feedbacks, the multi-faceted nature of ecosystems-climate interactions and their potential to affect the global Earth system are shown. It is concluded that, without a synergetic modeling approach that integrates all major feedbacks and relationships between terrestrial ecosystems and climate, reliable projections of environmental change in northern Eurasia are impossible, which will also bring into question the accuracy of global change projections.

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Держатели документа:
[Vygodskaya, N. N.] Jan Kochanowski Univ Humanities & Sci, Inst Geog, Sventokshistkaya Acad Poland, PL-25406 Kielce, Poland
[Groisman, P. Ya] Natl Climat Ctr, Asheville, NC 28801 USA
[Tchebakova, N. M.
Parfenova, E. I.] VN Sukachev Inst Forest, Siberian Branch Russian Acad Sci, Krasnoyarsk 660036, Russia
[Kurbatova, J. A.] Russian Acad Sci, AN Severtsov Inst Ecol & Evolut, Moscow 119071, Russia
[Panfyorov, O.] Univ Gottingen, Inst Bioclimatol, D-37077 Gottingen, Germany
[Sogachev, A. F.] Univ Helsinki, Dept Phys Sci, FI-00014 Helsinki, Finland

Доп.точки доступа:
Vygodskaya, N.N.; Groisman, P.Y.; Tchebakova, N.M.; Kurbatova, J.A.; Panfyorov, O...; Parfenova, E.I.; Sogachev, A.F.

[Text] / A. . Arneth [et al.] // Biogeosciences. - 2006. - Vol. 3, Is. 4. - P421-437. - Cited References: 67 . - 17. - ISSN 1726-4170РУБ Ecology + Geosciences, Multidisciplinary

Аннотация: We compare assimilation and respiration rates, and water use strategies in four divergent ecosystems located in cold-continental central Siberia and in semi-arid southern Africa. These seemingly unrelated systems have in common a harsh and highly seasonal environment with a very sharp transition between the dormant and the active season, with vegetation facing dry air and soil conditions for at least part of the year. Moreover, the northern high latitudes and the semi-arid tropics will likely experience changes in key environmental parameters (e.g., air temperature and precipitation) in the future; indeed, in some regions marked climate trends have already been observed over the last decade or so. The magnitude of instantaneous or daily assimilation and respiration rates, derived from one to two years of eddy covariance measurements in each of the four ecosystems, was not related to the growth environment. For instance, respiration rates were clearly highest in the two deciduous systems included in the analysis (a Mopane woodland In northern Botswana and a Downy birch forest in Siberia; 300mmol m(-2) d(-1)), while assimilation rates in the Mopane woodland were relatively similar to a Siberian Scots pine canopy for a large part of the active season (ca. 420 mmol m(-2) d(-1)). Acknowledging the limited number of ecosystems compared here, these data nevertheless demonstrate that factors like vegetation type, canopy phenology or ecosystem age can override larger-scale climate differences in terms of their effects on carbon assimilation and respiration rates. By far the highest rates of assimilation were observed in Downy birch, an early successional species. These were achieved at a rather conservative water use, as indicated by relatively low levels of lambda the marginal water cost of plant carbon gain. Surprisingly, the Mopane woodland growing in the semi-arid environment had significantly higher values of lambda However, its water use strategy included a very plastic response to intermittently dry periods, and values of lambda were much more conservative overall during a rainy season with low precipitation and high air saturation deficits. Our comparison demonstrates that forest ecosystems can respond very dynamically in terms of water use strategy, both on interannual and much shorter time scales. But it remains to be evaluated whether and in which ecosystems this plasticity is mainly due to a short-term stomatal response, or alternatively goes hand in hand with changes in canopy photosynthetic capacity.

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Держатели документа:
Lund Univ, Dept Phys Geog & Ecosyst Anal, S-22363 Lund, Sweden
Max Planck Inst Biogeochem, D-07701 Jena, Germany
Univ Wageningen & Res Ctr, Nat Conservat & Plant Ecol Grp, Wageningen, Netherlands
Univ Tuscia, Viterbo, Italy
Int Inst Geoinformat Sci & Earth Observat, Enschede, Netherlands
VN Sukachev Forest Inst, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Arneth, A...; Veenendaal, E.M.; Best, C...; Timmermans, W...; Kolle, O...; Montagnani, L...; Shibistova, O...

[Text] / E. G. Shvetsov, E. I. Ponomarev // Contemp. Probl. Ecol. - 2015. - Vol. 8, Is. 3. - P337-343, DOI 10.1134/S1995425515030142. - Cited References:29. - This research was carried with support from a grant of the Russian Scientific Foundation, project no. 14-24-00112. . - ISSN 1995-4255. - ISSN 1995-4263РУБ Ecology

Аннотация: In this work the influence of external environmental factors (prevailing forest stands, intensity of the fire season, and weather conditions) on power released by fire (fire radiative power (FRP)) has been studied. The data from the Moderate Resolution Imaging Spectroradiometer (MODIS) are used to characterize variations of the FRP. Our studies show that, during periods of high fire activity, the FRP is 10% higher than during periods of low fire activity. The correlation level between the FRP and weather fire danger is determined. In particular, the fire weather index (FWI) of the Canadian weather fire-danger-assessment system shows a closer relationship with the FRP than the Russian PV-1 index. Based on the results, it is found that fires in forests with a predominance of larch have higher FRP values (by 20-25%) for the forest zone of Siberia than fires in deciduous and pine forests.

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

Доп.точки доступа:
Shvetsov, E. G.; Ponomarev, E. I.; Russian Scientific Foundation [14-24-00112]