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

[Text] / M. V. Bryukhanova, E. A. Vaganov, C. . Wirth // Contemp. Probl. Ecol. - 2011. - Vol. 4, Is. 2. - P126-132, DOI 10.1134/S1995425511020020. - Cited References: 33. - This work was supported by RFBR (projects 08-04-00296, 09-05-00900), ADTP project 2.1.1/6131, and Scientific School-65610.2010.4. . - 7. - ISSN 1995-4255РУБ Ecology

Аннотация: This paper analyzes variations in the isotope composition of growth rings in coniferous and deciduous species (Picea obovata L., Pinus sylvestris L., Populus tremula L., Betula pubescens Ehrh.) growing in the extremely continental climate of Central Siberia. The seasonal variation in carbon isotopes in tree rings is shown to differ significantly in different species (with significant synchrony in interannual variability. Species differences are found in the use of reserve assimilates in the formation of tree rings in the early growing season.

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Держатели документа:
[Bryukhanova, M. V.] Russian Acad Sci, VN Sukachev Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia
[Vaganov, E. A.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Wirth, C.] Univ Leipzig, Inst Biol 1, D-04103 Leipzig, Germany

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Bryukhanova, M.V.; Vaganov, E.A.; Wirth, C...

[Text] / T. . Wallenius [et al.] // Int. J. Wildland Fire. - 2011. - Vol. 20, Is. 2. - P248-254, DOI 10.1071/WF10020. - Cited References: 43. - Aleksey Sadvordaev, Galina Zrazhevskaya, Toivo Haltia and Antti Lavikainen helped with the challenging arrangements and the field work. Oskar Ofluds Stiftelse, Nordenskiolds Samfundet and Ulla Wallenius funded the expedition to central Siberia. The Maj and Tor Nessling Foundation (grant number 2003064), Emil Aaltonen Foundation and Finnish Academy (grant number 121919) financed this long-duration study from field work to publication. . - 7. - ISSN 1049-8001РУБ Forestry

Аннотация: To study the poorly known fire history of Larix-dominated forest in central Siberia, we collected samples from 200 trees in 46 systematically located study plots. Our study area stretches similar to 90 km from north to south along the River Nizhnyaya Tunguska in northern Irkustk district. Cross-dated tree-ring chronology for all samples combined extended from the year 1360 AD to the present and included 76 fire years and 88 separate fire events. Average fire cycle gradually lengthened from 52 years in the 18th century to 164 years in the 20th century. During the same time, the number of recorded fires decreased even more steeply, i.e. by more than 85%. Fires were more numerous but smaller in the past. Contrary to expectations, climate change in the 20th century has not resulted in increased forest fires in this region. Fire suppression may have contributed to the scarcity of fires since the 1950s. However, a significant decline in fires was evident earlier; therefore an additional explanation is required, a reduction in human-caused ignitions being likely in the light of historical accounts.

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Держатели документа:
[Wallenius, Tuomo
Heikkinen, Juha] Finnish Forest Res Inst, Vantaa Res Unit, FI-01301 Vantaa, Finland
[Larjavaara, Markku] Smithsonian Trop Res Inst, Balboa, Ancon, Panama
[Shibistova, Olga] SB RAS, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia

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Wallenius, T...; Larjavaara, M...; Heikkinen, J...; Shibistova, O...