Climate-induced mortality of Siberian pine and fir in the Lake Baikal Watershed, Siberia

Тип публикации: статья из журнала

Год издания: 2017

Идентификатор DOI: 10.1016/j.foreco.2016.10.050

Ключевые слова: Water stress, Conifer mortality, Lake Baikal Region, Drought, Aridity increase, Forest health, DYNAMICS, DECLINE, IMPACTS, DROUGHT, REGION

Аннотация: Siberian pine (Pinus sibirica) and fir (Abies sibirica) (so called "dark needle conifers", DNC) showed decreased radial growth increment within the Lake Baikal watershed since the 1980s with increasing mortality recorded since the year 2000. Tree ring width was strongly correlated with vapor pressure deficit, aridity and root zone moisture. Water stress from droughts made trees more susceptible to insect attacks causing mortality in about 10% of DNC stands within the Lake Baikal watershed. Within Siberia DNC mortality increased in the southern part of the DNC range. Biogeographically, tree mortality was located within the DNC - forest-steppes transition. Tree mortality was significantly correlated with drought and soil moisture anomalies. Within the interior of the DNC range mortality occurred within relief features with high water stress risk (i.e., steep convex south facing slopes with shallow well drained soils). In general, DNC mortality in Siberia was induced by increased aridity and severe drought (inciting factors) in synergy with biotic attacks (contributing factor). In future climate scenarios with predicted increase in aridity DNC could be eliminated from the southern part of its current range and will be replaced by drought-resistant conifers and broadleaf species (e.g., Larix sibirica, Pinus silvestris, and Betula pubescence). (C) 2016 Elsevier B.V. All rights reserved.

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Издание

Журнал: FOREST ECOLOGY AND MANAGEMENT

Выпуск журнала: Vol. 384

Номера страниц: 191-199

ISSN журнала: 03781127

Место издания: AMSTERDAM

Издатель: ELSEVIER SCIENCE BV

Авторы

  • Kharuk Viacheslav I. (Sukachev Inst Forest, Acad 50-28; Siberian Fed Univ)
  • Im Sergei T. (Sukachev Inst Forest, Acad 50-28; Siberian Fed Univ; Siberian State Aerosp Univ)
  • Petrov Ilya A. (Sukachev Inst Forest)
  • Golyukov Alexei S. (Sukachev Inst Forest, Acad 50-28; Siberian Fed Univ)
  • Ranson Kenneth J. (NASAs Goddard Space Flight Ctr, Greenbelt, MD 20771 USA)
  • Yagunov Mikhail N. (Russian Ctr Forest Protect)

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