Evaluating the cumulative and time-lag effects of drought on grassland vegetation: A case study in the Chinese Loess Plateau

doi:10.1016/j.jenvman.2020.110214

	Evaluating the cumulative and time-lag effects of drought on grassland vegetation: A case study in the Chinese Loess Plateau
	Zhao, Anzhou 1,3; Yu, Qiuyan 2; Feng, Lili 3; Zhang, Anbing 3; Pei, Tao 1
刊名	JOURNAL OF ENVIRONMENTAL MANAGEMENT
	2020-05-01
卷号	261 页码:8
关键词	Cumulative effect Time-lag effect Drought Grassland NDVI3g SPEI Chinese loess plateau
ISSN号	0301-4797
DOI	10.1016/j.jenvman.2020.110214
通讯作者	Zhao, Anzhou(zhaoanzhou@hebeu.edu.cn) ; Zhang, Anbing(zhanganbing@hebeu.edu.cn)
英文摘要	The increased frequency of drought events in recent years is known to be responsible for significantly altering plant biodiversity in many of Earth's ecosystems, though the specifics of vegetation-drought interactions, especially the cumulative and time-lag responses, remains unclear. This study aimed to quantitatively investigate how grassland vegetation over the Chinese Loess Plateau (CLP) reacts to drought, specifically the observed cumulative and time-lag effects which are caused, using a combination of the Normalized Difference Vegetation Index (NDVI) and a multiple time-scale drought index (Standardized Precipitation and Evapotranspiration Index, SPED. Our results revealed that while drought conditions have widespread cumulative impacts on grass growth in the CLP, the time lag effect of drought covered about half of the total area of the CLP. The cumulative effect of drought on grass was found to take place over various time scales, ranging from 5 to 10 months, while the time lag effect occurred within 2-3 months. The different response time of vegetation growth to the cumulative effect of drought in the CLP was found to be highly related to different water conditions. The accumulated months and mean r(ma)(x-)(cu)(m) both had a significant negative correlation with the mean annual SPEI (R-2 = 0.90, P < 0.001; R-2 = 0.70, P < 0.001, respectively). The lagged months and mean r(max)(-leg) were also found to be negatively correlated with the mean annual SPEI (R-2 = 0.547, P < 0.05; R-2 = 0.785, P < 0.01, respectively).
资助项目	National Natural Science Foundation of China[41590845] ; National Natural Science Foundation of China[41525004] ; Ministry of education of Humanities and Social Science Project, China[18YJCZH257] ; Natural Science Foundation of Hebei Province, China[D2017402159] ; Program of Education Department of Hebei Province, China[BJ2018043] ; Program of Education Department of Hebei Province, China[QN2018054] ; Program of Education Department of Hebei Province, China[ZD2018230] ; State Key Laboratory of Resources and Environmental Information System, China
WOS关键词	CLIMATE-CHANGE ; RIVER-BASIN ; MULTISCALE DROUGHT ; SOIL-EROSION ; IMPACTS ; PRODUCTIVITY ; RESPONSES ; PRECIPITATION ; RESTORATION ; TEMPERATURE
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
WOS记录号	WOS:000521511800038
资助机构	National Natural Science Foundation of China ; Ministry of education of Humanities and Social Science Project, China ; Natural Science Foundation of Hebei Province, China ; Program of Education Department of Hebei Province, China ; State Key Laboratory of Resources and Environmental Information System, China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/133568]
专题	中国科学院地理科学与资源研究所
通讯作者	Zhao, Anzhou; Zhang, Anbing
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China 2.New Mexico State Univ, Dept Plant & Environm Sci, Las Cruces, NM 88003 USA 3.Hebei Univ Engn, Coll Min & Geomat, Handan 056038, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Anzhou,Yu, Qiuyan,Feng, Lili,et al. Evaluating the cumulative and time-lag effects of drought on grassland vegetation: A case study in the Chinese Loess Plateau[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2020,261:8.
APA	Zhao, Anzhou,Yu, Qiuyan,Feng, Lili,Zhang, Anbing,&Pei, Tao.(2020).Evaluating the cumulative and time-lag effects of drought on grassland vegetation: A case study in the Chinese Loess Plateau.JOURNAL OF ENVIRONMENTAL MANAGEMENT,261,8.
MLA	Zhao, Anzhou,et al."Evaluating the cumulative and time-lag effects of drought on grassland vegetation: A case study in the Chinese Loess Plateau".JOURNAL OF ENVIRONMENTAL MANAGEMENT 261(2020):8.