Response of Temperature-limited Forests to Recent Moisture Changes Derived from Tree-ring Stable Carbon Isotopes

نویسندگان

چکیده

Recent climatic changes significantly affected forest ecosystems in northern Eurasia. Trees growing Siberia are very sensitive to climate change due strong temperature limitation of their growth. Our study covers high-latitude (northeastern Yakutia, eastern Taimyr, central Evenkia) and high-altitude (Russian Altai) zones Eurasia, where tree-ring parameters (tree-ring width, cell-wall thickness, maximum latewood density) mainly record summer air variations. To reveal the impact moisture (e.g., amount precipitation, vapor pressure deficit, relative humidity potential evapotranspiration) on tree growth Siberian ecosystems, we evaluated δ13C cellulose over past century. We found that at all sites June-July precipitation evapotranspiration affect larch radial growth, while strongest influence deficit was observed northeastern Yakutia. Further increase rise coming decades regions will probably lead drought related mortality even under additional source water permafrost thaw.

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ژورنال

عنوان ژورنال: Russian Journal of Ecology

سال: 2021

ISSN: ['1608-3334', '1067-4136']

DOI: https://doi.org/10.1134/s1067413621050052