Тип публикации: статья из журнала
Год издания: 2021
Идентификатор DOI: 10.1134/S1067413621050052
Ключевые слова: conifers, stable carbon isotopes, cellulose, climate, permafrost, drought
Аннотация: Recent climatic changes significantly affected forest ecosystems in northern Eurasia. Trees growing in Siberia are very sensitive to climate change due to strong temperature limitation of their growth. Our study covers high-latitude (northeastern Yakutia, eastern Taimyr, central Evenkia) and high-altitude (Russian Altai) zones in EПоказать полностьюurasia, where tree-ring parameters (tree-ring width, cell-wall thickness, and maximum latewood density) mainly record summer air temperature variations. To reveal the impact of moisture changes (e.g., amount of precipitation, vapor pressure deficit, relative humidity and potential evapotranspiration) on tree growth in Siberian forest ecosystems, we evaluated delta C-13 in tree-ring cellulose over the past century. We found that at all the study sites mainly June-July precipitation and June-July evapotranspiration affect larch radial growth, while the strongest influence of vapor pressure deficit on the delta C-13 was observed in northeastern Yakutia. Further increase of vapor pressure deficit and rise of air temperature in the coming decades in Siberian regions will probably lead to drought and related forest mortality even under additional source of water due to permafrost thaw.
Журнал: RUSSIAN JOURNAL OF ECOLOGY
Выпуск журнала: Vol. 52, Is. 5
Номера страниц: 368-375
ISSN журнала: 10674136
Место издания: NEW YORK
Издатель: PLEIADES PUBLISHING INC