Plant response to climate change along the forest-tundra ecotone in northeastern Siberia
Plant response to climate change along the forest-tundra ecotone in northeastern Siberia
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DOI：
10.1111/gcb.12304
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发表时间：
2013-11-01
影响因子：
11.6
通讯作者：
Goetz, Scott J.
中科院分区：
文献类型：
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作者：
Berner, Logan T.;Beck, Pieter S. A.;Goetz, Scott J.
俄罗斯的北方针叶林（针叶林）生物群落可能会急剧收缩，并向北移动，以应对21世纪的气候变化，但很少有研究探讨植物对气候变化的反应沿着北部边缘。我们量化的气候动态，植物生长的趋势，并在苔原灌丛和Cajander落叶松（落叶松Mayr。）利用卫星导出的归一化植被指数（NDVI）、树木年轮宽度测量和气候数据，对西伯利亚东北部科雷马河流域（657000 km（2））的林地进行了研究。从1938年到2009年，夏季平均气温（Ts）增加了1.0摄氏度，尽管生长年降水量或气候湿度指数（CMIgy）没有趋势（P>0.05）。平均夏季NDVI（NDVI）显着增加，从1982年到2010年在20%的流域，主要是在寒冷，灌木为主的地区。NDVI呈正相关（P
Russia's boreal (taiga) biome will likely contract sharply and shift northward in response to 21st century climatic change, yet few studies have examined plant response to climatic variability along the northern margin. We quantified climate dynamics, trends in plant growth, and growth-climate relationships across the tundra shrublands and Cajander larch (Larix cajanderi Mayr.) woodlands of the Kolyma river basin (657000km(2)) in northeastern Siberia using satellite-derived normalized difference vegetation indices (NDVI), tree ring-width measurements, and climate data. Mean summer temperatures (T-s) increased 1.0 degrees C from 1938 to 2009, though there was no trend (P>0.05) in growing year precipitation or climate moisture index (CMIgy). Mean summer NDVI (NDVIs) increased significantly from 1982 to 2010 across 20% of the watershed, primarily in cold, shrub-dominated areas. NDVIs positively correlated (P