The impact of drought on vegetation conditions within the Damqu River Basin, Yangtze River Source Region, China

doi:10.1371/journal.pone.0202966

	The impact of drought on vegetation conditions within the Damqu River Basin, Yangtze River Source Region, China
	Zhao, Zhilong 1,2; Zhang, Yili 1,3; Liu, Linshan 1; Hu, Zengzeng 4
刊名	PLOS ONE
	2018-08-24
卷号	13 期号:8 页码:21
ISSN号	1932-6203
DOI	10.1371/journal.pone.0202966
通讯作者	Liu, Linshan(liuls@igsnrr.ac.cn)
英文摘要	Drought and vegetation conditions within the Damqu River Basin, part of the Yangtze River Source Region (YRSR), are assessed here using the standardized precipitation index (SPI), the standardized precipitation evapotranspiration index (SPEI), the normalized difference vegetation index (NDVI), and the leaf area index (LAI). We utilized Sen's method, least squares regression method, linear regression and Pearson's correlation analysis to study variations in drought and vegetation indices and the drought effect on vegetation between 1988 and 2015. Results reveal that droughts occurred at a 25% frequency over this period; SPI and SPEI analyses show that 1994, 1999, 2005, and 2010 were change points and that the basin was characterized by varying drought and humidity trends. Subsequent to 2010, both SPI and SPEI decreased within the basin, while 1995, 2000, 2004, and 2010 were change points for NDVI and LAI while the watershed exhibited variable trends in vegetation reduction and increase. The NDVI-annual values of 63.36% regions and the LAI-summer values of 68.39% areas within the basin were decreased during 1988 +/- 2015 and 2000 +/- 2015, respectively. Subsequent to 2010, both NDVI and LAI decreased within the basin and significant positive correlations at inter-annual and inter-summer time scales were seen in both drought and vegetation indices; drought has exerted a lag effect on vegetation as shown by significant positive correlations between annual SPI/SPEI values and following year NDVI/LAI values.
资助项目	Key Foundation Project of Basic Work of the Ministry of Science and Technology of China[2012FY111400] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA20040200] ; National Natural Science Foundation of China[41671104]
WOS关键词	REMOTE-SENSING DATA ; CLIMATE-CHANGE ; TIBETAN PLATEAU ; SOIL-MOISTURE ; TREND ; INDEX ; DESERTIFICATION ; VARIABILITY ; ENVIRONMENT
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	PUBLIC LIBRARY SCIENCE
WOS记录号	WOS:000442722500055
资助机构	Key Foundation Project of Basic Work of the Ministry of Science and Technology of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/54275]
专题	中国科学院地理科学与资源研究所
通讯作者	Liu, Linshan
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China 4.Capital Univ Econ & Business, Coll Urban Econ & Publ Adm, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Zhilong,Zhang, Yili,Liu, Linshan,et al. The impact of drought on vegetation conditions within the Damqu River Basin, Yangtze River Source Region, China[J]. PLOS ONE,2018,13(8):21.
APA	Zhao, Zhilong,Zhang, Yili,Liu, Linshan,&Hu, Zengzeng.(2018).The impact of drought on vegetation conditions within the Damqu River Basin, Yangtze River Source Region, China.PLOS ONE,13(8),21.
MLA	Zhao, Zhilong,et al."The impact of drought on vegetation conditions within the Damqu River Basin, Yangtze River Source Region, China".PLOS ONE 13.8(2018):21.