当前位置: Nature » 分子生物学 » 正文

Nat Clim Change:中科院青藏研究所朴世龙研究组等发表地球变绿及其驱动因子

摘要 : 2016年4月25日,国际学术权威刊物自然出版集团旗下子刊《Nature Climate Change》在线发表了中国科学院青藏高原研究所朴世龙教授等揭示了地球变绿及驱动因子。

 2016年4月25日,国际学术权威刊物自然出版集团旗下子刊《Nature Climate Change》在线发表了中国科学院青藏高原研究所朴世龙教授等揭示了地球变绿及驱动因子。




Greening of the Earth and its drivers


Global environmental change is rapidly altering the dynamics of terrestrial vegetation, with consequences for the functioning of the Earth system and provision of ecosystem services1, 2. Yet how global vegetation is responding to the changing environment is not well established. Here we use three long-term satellite leaf area index (LAI) records and ten global ecosystem models to investigate four key drivers of LAI trends during 1982–2009. We show a persistent and widespread increase of growing season integrated LAI (greening) over 25% to 50% of the global vegetated area, wheras less than 4% of the globe shows decreasing LAI (browning). Factorial simulations with multiple global ecosystem models suggest that CO2 fertilization effects explain 70% of the observed greening trend, followed by nitrogen deposition (9%), climate change (8%) and land cover change (LCC) (4%). CO2 fertilization effects explain most of the greening trends in the tropics, wheras climate change resulted in greening of the high latitudes and the Tibetan Plateau. LCC contributed most to the regional greening observed in southeast China and the eastern United States. The regional effects of unexplained factors suggest that the next generation of ecosystem models will need to explore the impacts of forest demography, differences in regional management intensities for cropland and pastures, and other emerging productivity constraints such as phosphorus availability.

来源: Nature Climate Change 浏览次数:0


RSS订阅 - 填写您的邮件地址,订阅我们的精彩内容: - 网站地图
网站联系电话:020-87540820 备案号:粤ICP备11050685号-8 增值电信业务经营许可证:粤B2-20120479
©2011-2015 生物帮 All rights reserved.