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Drought Impacts on Vegetation Indices and Productivity of Terrestrial Ecosystems in Southwestern China During 2001-2012
Zhou Lei1,2,3; Wang Shaoqiang2; Chi Yonggang1,2; Wang Junbang2
2018-10-01
Source PublicationCHINESE GEOGRAPHICAL SCIENCE
ISSN1002-0063
Volume28Issue:5Pages:784-796
Corresponding AuthorZhou Lei(zhoulei@igsnrr.ac.cn)
AbstractDrought, as a recurring extreme climate event, affects the structure, function, and process of terrestrial ecosystems. Despite the increasing occurrence and intensity of the drought in the past decade in Southwestern China, the impacts of continuous drought events on vegetation in this region remain unclear. During 2001-2012, Southwestern China experienced the severe drought events from 2009 to 2011. Our aim is to characterize drought conditions in the Southwestern China and explore the impacts on the vegetation condition and terrestrial ecosystem productivity. The Standardized Precipitation Index (SPI) was used to characterize drought area and intensity and a light-use efficiency model was used to explore the effect of drought on the terrestrial ecosystem productivity with Moderate Resolution Imaging Spectrometer (MODIS) data. The SPI captured the major drought events in Southwestern China during the study period, indicated that the 12-year period of this study included both normal' precipitation years and two severe drought events in 2009-2010 and 2011. Results showed that vegetation greenness (Normalized Difference Vegetation Index, NDVI and Enhanced Vegetation Index, EVI) both declined in 2009/2010 drought, but the 2011 drought resulted in less declines of vegetation greenness and productivity due to shorten drought duration and rising temperature. Meanwhile, it was about 5 months lapse between drought events and maximum declines in vegetation greenness for 2009/2010 drought events. In addition, forest, grassland and cropland revealed significant different ecosystem responses to drought. It indicated that grassland showed an early sensitivity to drought, while cropland was the most sensitive to water deficit and forest was more resilient to drought. This study suggests that it is necessary to detect the difference responses of ecosystem to drought in a regional area with satellite data and ecosystem model.
Keyworddrought Standardized Precipitation Index (SPI) vegetation indices Net Primary Productivity (NPP) Southwestern China
DOI10.1007/s11769-018-0967-1
WOS KeywordNET PRIMARY PRODUCTION ; GROSS PRIMARY PRODUCTION ; INTERANNUAL VARIABILITY ; CONIFEROUS PLANTATION ; GROWING-SEASON ; GREAT-PLAINS ; FOREST ; CARBON ; CLIMATE ; AMAZON
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2016YFB0501501] ; National Key Research and Development Program of China[2017YFB0504000] ; National Natural Science Foundation of China[41401110] ; National Natural Science Foundation of China[31400393]
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000443980500005
PublisherSPRINGER
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/54286
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZhou Lei
Affiliation1.Zhejiang Normal Univ, Coll Geog & Environm Sci, Jinhua 321004, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modelling, Beijing 100101, Peoples R China
3.Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA
Recommended Citation
GB/T 7714
Zhou Lei,Wang Shaoqiang,Chi Yonggang,et al. Drought Impacts on Vegetation Indices and Productivity of Terrestrial Ecosystems in Southwestern China During 2001-2012[J]. CHINESE GEOGRAPHICAL SCIENCE,2018,28(5):784-796.
APA Zhou Lei,Wang Shaoqiang,Chi Yonggang,&Wang Junbang.(2018).Drought Impacts on Vegetation Indices and Productivity of Terrestrial Ecosystems in Southwestern China During 2001-2012.CHINESE GEOGRAPHICAL SCIENCE,28(5),784-796.
MLA Zhou Lei,et al."Drought Impacts on Vegetation Indices and Productivity of Terrestrial Ecosystems in Southwestern China During 2001-2012".CHINESE GEOGRAPHICAL SCIENCE 28.5(2018):784-796.
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