Тип публикации: статья из журнала

Год издания: 2014

Идентификатор DOI: 10.1016/j.polar.2013.12.002

Ключевые слова: Carbon isotope, Eastern Siberia, Taiga, Tree-ring, Water-use efficiency, boreal forest, carbon isotope ratio, climate variation, coniferous tree, dendrochronology, growth response, physiological response, precipitation (climatology), tree ring, water use efficiency, Siberia, Larix

Аннотация: Tree-ring chronologies of ring width and stable carbon isotope ratios (?13C) over the past 160 years were developed using living larch trees at two forest sites, each with different annual precipitation, in eastern Siberia: Spasskaya Pad (SP) (62°14'N, 129°37'E); and Elgeeii (EG) (60°0'N, 133°49'E). Intrinsic water-use efficiency (Показать полностьюiWUE) was derived from tree-ring ?13C. The physiological responses of the larch trees to climate varied between these sites and over time. Ring widths correlated negatively with summer temperatures at SP, where summer precipitation is lower than at EG, probably due to temperature-induced water stress. Since the 1990s, however, the negative effect of warming has been more severe at EG, where the productivity of larch trees is higher than at SP. A greater reduction of larch tree growth and higher increase rate of iWUE at EG reflects greater temperature-induced water stress, which is incident to the larger forest biomass. Our results suggest that effect of increase in atmospheric CO2 on larch tree growth is not sufficient to compensate for temperature-induced water stress on larch growth in eastern Siberia and differences in precipitation and forest productivity largely affect the larch tree response to changing climate in eastern Siberia. © 2013 Elsevier B.V. and NIPR.

Журнал: Polar Science

Выпуск журнала: Vol. 8, Is. 2

Номера страниц: 183-195

• Tei S. (Graduate School of Environmental Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan, National Institute of Polar Research, Tokyo 190-0014, Japan)
• Sugimoto A. (Graduate School of Environmental Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan, Faculty of Environmental Earth Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan)
• Yonenobu H. (College of Education, Naruto University of Education, Naruto 772-8502, Japan)
• Ohta T. (Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya 464-8601, Japan)
• Maximov T.C. (Institute for Biological Problem of Cryolithozone, Siberian Division of Russian Academy of Science, 41 Lenin Avenue, Yakutsk 678891, Russian Federation, North-Eastern Federal University, 58 Belinskogo st., Yakutsk 677000, Russian Federation)

• Scopus