Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2015

Идентификатор DOI: 10.1016/j.jhydrol.2015.01.085

Ключевые слова: Carbon isotope, Eastern siberia, PDSI, Taiga, Tree ring, Drought, Isotopes, Soil moisture, Carbon isotopes, Tree rings, Forestry, Larix

Аннотация: We present a tree-ring reconstruction of Palmer Drought Severity Index (PDSI) in Ust-Maya region (60°00'N, 133°49'E), central part of eastern Siberia using total ring (TR) widths and latewood (LW) ?13C chronologies from larch trees (1850-2008 AD). Summer (JJA) PDSI was correlated positively and negatively with the TR widths and LW ?13C, respectively. Using a multiple liner regression approach, we reconstructed summer PDSI using the time series of TR widths and LW ?13C. The reconstruction showed an interannual to decadal wet/dry fluctuation with several moist periods before 1950s and a severe drought event from 1991 to 1993. Comparison of the reconstruction with reconstructed July PDSI for the Yakutsk region, 300km northwest of Ust-Maya, showed heterogeneous changes in the mean states of soil moisture, but synchronous year-to-year changes. These results indicate that regional studies are quite important to precisely depict the spatio-temporal variability of hydrological changes in the central part of eastern Siberia. © 2015 Elsevier B.V.

Журнал: Journal of Hydrology

Выпуск журнала: Vol. 529, Is. P2

Номера страниц: 442-448

• Tei S. (National Institute of Polar Research, Tokyo, Japan, Graduate School of Environmental Science, Hokkaido University, Sapporo, Hokkaido, Japan)
• Yonenobu H. (College of Education, Naruto University of Education, Naruto, Japan)
• Sugimoto A. (Graduate School of Environmental Science, Hokkaido University, Sapporo, Hokkaido, Japan, Faculty of Environmental Earth Science, Hokkaido University, Sapporo, Hokkaido, Japan)
• Ohta T. (Gruduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan)
• Maximov T.C. (Institute for Biological Problem of Cryolithozone, Siberian Division of Russian Academy of Science, 41 Lenin Avenue, Yakutsk, Russian Federation, North-Eastern Federal University, 58 Belinskogo St., Yakutsk, Russian Federation)

• Scopus