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Evaluating the cumulative and time-lag effects of drought on grassland vegetation: A case study in the Chinese Loess Plateau
Zhao, Anzhou1,2; Yu, Qiuyan3; Feng, Lili1; Zhang, Anbing1; Pei, Tao2
2020-05-01
Source PublicationJOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN0301-4797
Volume261Pages:8
Corresponding AuthorZhao, Anzhou(zhaoanzhou@hebeu.edu.cn) ; Zhang, Anbing(zhanganbing@hebeu.edu.cn)
AbstractThe 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).
KeywordCumulative effect Time-lag effect Drought Grassland NDVI3g SPEI Chinese loess plateau
DOI10.1016/j.jenvman.2020.110214
WOS KeywordCLIMATE-CHANGE ; RIVER-BASIN ; MULTISCALE DROUGHT ; SOIL-EROSION ; IMPACTS ; PRODUCTIVITY ; RESPONSES ; PRECIPITATION ; RESTORATION ; TEMPERATURE
Indexed BySCI
Language英语
Funding ProjectNational 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
Funding OrganizationNational 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
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000521511800038
PublisherACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/133569
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZhao, Anzhou; Zhang, Anbing
Affiliation1.Hebei Univ Engn, Coll Min & Geomat, Handan 056038, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China
3.New Mexico State Univ, Dept Plant & Environm Sci, Las Cruces, NM 88003 USA
Recommended Citation
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.
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