气候变化领域集成服务门户(CCPortal): Moisture-induced greening of the South Asia over the past three decades

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DOI	10.1111/gcb.13762
	Moisture-induced greening of the South Asia over the past three decades
	Wang, Xiaoyi; Wang, Tao; Liu, Dan; Guo, Hui; Huang, Huabing; Zhao, Yutong
通讯作者	Wang, T (通讯作者)
发表日期	2017
ISSN	1354-1013
EISSN	1365-2486
起始页码	4995
结束页码	5005
卷号	23 期号:11
英文摘要	South Asia experienced a weakening of summer monsoon circulation in the past several decades, resulting in rainfall decline in wet regions. In comparison with other tropical ecosystems, quantitative assessments of the extent and triggers of vegetation change are lacking in assessing climate-change impacts over South Asia dominated by crops. Here, we use satellite-based Normalized Difference Vegetation Index (NDVI) to quantify spatial-temporal changes in vegetation greenness, and find a widespread annual greening trend that stands in contrast to the weakening of summer monsoon circulation particularly over the last decade. We further show that moisture supply is the primary factor limiting vegetation activity during dry season or in dry region, and cloud cover or temperature would become increasingly important in wet region. Enhanced moisture conditions over dry region, coinciding with the decline in monsoon, are mainly responsible for the widespread greening trend. This result thereby cautions the use of a unified monsoon index to predict South Asia's vegetation dynamics. Current climate-carbon models in general correctly reproduce the dominant control of moisture in the temporal characteristics of vegetation productivity. But the model ensemble cannot exactly reproduce the spatial pattern of satellite-based vegetation change mainly because of biases in climate simulations. The moisture-induced greening over South Asia, which is likely to persist into the wetter future, has significant implications for regional carbon cycling and maintaining food security.
关键词	NET PRIMARY PRODUCTION CLIMATE-CHANGE SUMMER MONSOON INTERANNUAL VARIABILITY VEGETATION DYNAMICS ATMOSPHERIC DEMAND CANOPY STRUCTURE SOIL-MOISTURE LAND-SURFACE RAIN-FOREST
英文关键词	CMIP5; NDVI; soil moisture; South Asia; vegetation greening
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS记录号	WOS:000412322700045
来源期刊	GLOBAL CHANGE BIOLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258887
推荐引用方式 GB/T 7714	Wang, Xiaoyi,Wang, Tao,Liu, Dan,et al. Moisture-induced greening of the South Asia over the past three decades[J]. 中国科学院青藏高原研究所,2017,23(11).
APA	Wang, Xiaoyi,Wang, Tao,Liu, Dan,Guo, Hui,Huang, Huabing,&Zhao, Yutong.(2017).Moisture-induced greening of the South Asia over the past three decades.GLOBAL CHANGE BIOLOGY,23(11).
MLA	Wang, Xiaoyi,et al."Moisture-induced greening of the South Asia over the past three decades".GLOBAL CHANGE BIOLOGY 23.11(2017).