Larch (Larix dahurica Turcz) growth response to climate change in the Siberian permafrost zone

Тип публикации: статья из журнала

Год издания: 2018

Идентификатор DOI: 10.1007/s10113-018-1401-z

Ключевые слова: Climate impact on trees, Growth index, Larch and permafrost, Larch forests, Larix dahurica, Northern treeline, Tree radial growth, Tree response to warming

Аннотация: Larch-dominant communities are the most extensive high-latitude forests in Eurasia and are experiencing the strongest impacts from warming temperatures. We analyzed larch (Larix dahurica Turcz) growth index (GI) response to climate change. The studied larch-dominant communities are located within the permafrost zone of Northern Siberia at the northern tree limit (ca. N 67° 38′, E 99° 07′). Methods included dendrochronology, analysis of climate variables, root zone moisture content, and satellite-derived gross (GPP) and net (NPP) primary productivity. It was found that larch response to warming included a period of increased annual growth increment (GI) (from the 1970s to ca. 1995) with a follow on GI decline. Increase in GI correlated with summer air temperature, whereas an observed decrease in GI was caused by water stress (vapor pressure deficit and drought increase). Water stress impact on larch growth in permafrost was not observed before the onset of warming (ca. 1970). Water limitation was also indicated by GI dependence on soil moisture stored during the previous year. Water stress was especially pronounced for stands growing on rocky soils with low water-holding capacity. GPP of larch communities showed an increasing trend, whereas NPP stagnated. A similar pattern of GI response to climate warming has also been observed for Larix sibirica Ledeb, Pinus sibirica Du Tour, and Abies sibirica Ledeb in the forests of southern Siberia. Thus, warming in northern Siberia permafrost zone resulted in an initial increase in larch growth from the 1970s to the mid-1990s. After that time, larch growth increment has decreased. Since ca. 1990, water stress at the beginning of the vegetative period became, along with air temperature, a main factor affecting larch growth within the permafrost zone. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature.

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Издание

Журнал: Regional Environmental Change

ISSN журнала: 14363798

Издатель: Springer Verlag

Авторы

  • Kharuk Viacheslav I. (Russian Acad Sci, Fed Sci Ctr, Sukachev Inst Forest, Siberian Branch, Academgorodok 50-28, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Svobodny Str 79, Krasnoyarsk 660041, Russia)
  • Ranson Kenneth J. (NASA, Goddard Space Flight Ctr, Code 618, Greenbelt, MD 20771 USA)
  • Petrov Il'ya A. (Russian Acad Sci, Fed Sci Ctr, Sukachev Inst Forest, Siberian Branch, Academgorodok 50-28, Krasnoyarsk 660036, Russia)
  • Dvinskaya Maria L. (Russian Acad Sci, Fed Sci Ctr, Sukachev Inst Forest, Siberian Branch, Academgorodok 50-28, Krasnoyarsk 660036, Russia)
  • Im Sergei T. (Russian Acad Sci, Fed Sci Ctr, Sukachev Inst Forest, Siberian Branch, Academgorodok 50-28, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Svobodny Str 79, Krasnoyarsk 660041, Russia; Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsky Rabochy Str 31, Krasnoyarsk 660014, Russia)
  • Golyukov Alexei S. (Russian Acad Sci, Fed Sci Ctr, Sukachev Inst Forest, Siberian Branch, Academgorodok 50-28, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Svobodny Str 79, Krasnoyarsk 660041, Russia)

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