Recent shift in Eurasian boreal forest greening response may be associated with warmer and drier summers

被引：107

作者：

Buermann, Wolfgang ^{[1
]}

Parida, Bikash ^{[2
]}

Jung, Martin ^{[3
]}

MacDonald, Glen M. ^{[4
]}

Tucker, Compton J. ^{[5
]}

Reichstein, Markus ^{[3
]}

机构：

[1] Univ Leeds, Inst Climate & Atmospher Sci, Sch Earth & Environm, Leeds, W Yorkshire, England

[2] Shiv Nadar Univ, Dept Civil Engn, Dadri, Uttar Pradesh, India

[3] Max Planck Inst Biogeochem, D-07745 Jena, Germany

[4] Univ Calif Los Angeles, Inst Environm & Sustainabil, Los Angeles, CA USA

[5] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2014年 / 41卷 / 06期

基金：

美国国家航空航天局;

关键词：

climate change; boreal forests; heat and drought stress; vegetation remote sensing; WATER-USE EFFICIENCY; NORTH-AMERICA; WHITE SPRUCE; CARBON SINK; CLIMATE; GROWTH; TEMPERATURE; DROUGHT; PRODUCTIVITY; DIVERGENCE;

D O I：

10.1002/2014GL059450

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Terrestrial ecosystems in the northern high latitudes are currently experiencing drastic warming, and recent studies suggest that boreal forests may be increasingly vulnerable to warming-related factors, including temperature-induced drought stress as well as shifts in fire regimes and insect outbreaks. Here we analyze interannual relationships in boreal forest greening and climate over the last three decades using newly available satellite vegetation data. Our results suggest that due to continued summer warming in the absence of sustained increases in precipitation, a turning point has been reached around the mid-1990s that shifted western central Eurasian boreal forests into a warmer and drier regime. This may be the leading cause for the emergence of large-scale negative correlations between summer temperatures and forest greenness. If such a regime shift would be sustained, the dieback of the boreal forest induced by heat and drought stress as predicted by vegetation models may proceed more rapidly than anticipated.

引用

页码：1995 / 2002

页数：8