气候变化领域集成服务门户(CCPortal): Divergent vegetation responses to extreme spring and summer droughts in Southwestern China

CCPortal

DOI	10.1016/j.agrformet.2019.107703
	Divergent vegetation responses to extreme spring and summer droughts in Southwestern China
	Song, Lisheng; Li, Yan; Ren, Yanghang; Wu, Xiuchen; Guo, Bo; Tang, Xuguang; Shi, Weiyu; Ma, Mingguo; Han, Xujun; Zhao, Long
通讯作者	Song, LS ; Shi, WY (通讯作者)
发表日期	2019
ISSN	0168-1923
EISSN	1873-2240
卷号	279
英文摘要	In the winter and spring of 2009-2010 and summer of 2011, Southwestern China was hit by two severe drought events that are unprecedented over the past three decades with substantial economic damage. The understanding of how vegetation growth responds to extreme drought events in different seasons is inadequate, and underlying mechanisms are unclear. Here, we investigated the impacts of the 2009-2010 winter-spring drought and 2011 summer drought on vegetation growth and productivity in Southwestern China, using multiple remote sensing vegetation indexes including Normalized Difference Vegetation Index, Enhanced Vegetation Index, gross primary productivity/net primary productivity and vegetation optical depth. Our analyses reveal that severe soil moisture deficit in 2009-2010 winter-spring drought resulted in reduction in evapotranspiration, Enhanced Vegetation Index (0.047) and gross primary productivity (1.833 P cg) /net primary productivity in 2010 spring, worse decreased Normalized Difference Vegetation Index (0.135) and decreased vegetation optical depth in summer. By contrast, the 2011 summer drought led to enhanced vegetation greenness and higher summer gross primary productivity (1.272 P cg) /net primary productivity (0.546) compared with normal years (2007-2008), due to increased solar radiation over forests region. Our study highlights the divergent responses of vegetation to extreme drought events occurred in different seasons.
关键词	AGRICULTURAL DROUGHT WATER-RESOURCES KARST GROWTH TOLERANCE FORESTS CANOPY INDEX HEAT
英文关键词	Drought events; Divergent vegetation responses; Southwestern China
语种	英语
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS类目	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000500197400014
来源期刊	AGRICULTURAL AND FOREST METEOROLOGY
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/259453
推荐引用方式 GB/T 7714	Song, Lisheng,Li, Yan,Ren, Yanghang,et al. Divergent vegetation responses to extreme spring and summer droughts in Southwestern China[J]. 中国科学院青藏高原研究所,2019,279.
APA	Song, Lisheng.,Li, Yan.,Ren, Yanghang.,Wu, Xiuchen.,Guo, Bo.,...&Zhao, Long.(2019).Divergent vegetation responses to extreme spring and summer droughts in Southwestern China.AGRICULTURAL AND FOREST METEOROLOGY,279.
MLA	Song, Lisheng,et al."Divergent vegetation responses to extreme spring and summer droughts in Southwestern China".AGRICULTURAL AND FOREST METEOROLOGY 279(2019).