IGSNRR OpenIR
Spatiotemporal Variation of Drought and Associated Multi-Scale Response to Climate Change over the Yarlung Zangbo River Basin of Qinghai-Tibet Plateau, China
Li, Hao1,2; Liu, Liu1,2; Shan, Baoying1,2; Xu, Zhicheng3,4,5; Niu, Qiankun1,2; Cheng, Lei3,4,5; Liu, Xingcai6; Xu, Zongxue7,8
2019-07-01
Source PublicationREMOTE SENSING
ISSN2072-4292
Volume11Issue:13Pages:21
Corresponding AuthorLiu, Liu(liuliu@cau.edu.cn)
AbstractDrought is one of the most widespread and threatening natural disasters in the world, which has terrible impacts on agricultural irrigation and production, ecological environment, and socioeconomic development. As a critical ecologically fragile area located in southwest China, the Yarlung Zangbo River (YZR) basin is sensitive and vulnerable to climate change and human activities. Hence, this study focused on the YZR basin and attempted to investigate the spatiotemporal variations of drought and associated multi-scale response to climate change based on the scPDSI (self-calibrating Palmer drought severity index) and CRU (climate research unit) data. Results showed that: (1) The YZR basin has experienced an overall wetting process from 1956 to 2015, while a distinct transition period in the mid 1990s (from wet to dry) was detected by multiple statistical methods. (2) Considering the spatial variation of the scPDSI, areas showing the significantly wetting process with increasing scPDSI values were mostly located in the arid upstream and midstream regions, which accounted for over 48% area of the YZR basin, while areas exhibiting the drying tendency with decreasing scPDSI values were mainly concentrated in the humid southern part of the YZR basin, dominating the transition period from wet to dry, to which more attention should be paid. (3) By using the EEMD (ensemble empirical mode decomposition) method, the scPDSI over the YZR basin showed quasi-3-year and quasi-9-year cycles at the inter-annual scale, while quasi-15-year and quasi-56-year cycles were detected at the inter-decadal scale. The reconstructed inter-annual scale showed a better capability to represent the abrupt change characteristic of drought, which was also more influential to the original time series with a variance contribution of 55.3%, while the inter-decadal scale could be used to portray the long-term drought variation process with a relative lower variance contribution of 29.1%. (4) The multi-scale response of drought to climate change indicated that changes of precipitation (PRE) and diurnal temperature range (DTR) were the major driving factors in the drought variation at different time scales. Compared with potential evapotranspiration (PET), DTR was a much more important climate factor associated with drought variations by altering the energy balance, which is more obvious over the YZR basin distributed with extensive snow cover and glaciers. These findings could provide important implications for ecological environment protection and sustainable socioeconomic development in the YZR basin and other high mountain regions.
Keywordclimate change drought multi-scale scPDSI EEMD Yarlung Zangbo River
DOI10.3390/rs11131596
WOS KeywordEMPIRICAL MODE DECOMPOSITION ; SPACE-TIME CLIMATE ; REFERENCE EVAPOTRANSPIRATION ; SOIL-MOISTURE ; SATELLITE-OBSERVATIONS ; DAILY PRECIPITATION ; INNER-MONGOLIA ; KAIDU RIVER ; VARIABILITY ; TEMPERATURE
Indexed BySCI
Language英语
Funding ProjectNational Key R&D Program of China[2018YFC1508702] ; National Natural Science Foundation of China[91647202] ; National Natural Science Foundation of China[41890822] ; National Natural Science Foundation of China[51509247]
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China
WOS Research AreaRemote Sensing
WOS SubjectRemote Sensing
WOS IDWOS:000477049000087
PublisherMDPI
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/68828
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLiu, Liu
Affiliation1.China Agr Univ, Coll Water Resources & Civil Engn, Beijing 100083, Peoples R China
2.China Agr Univ, Ctr Agr Water Res China, Beijing 100083, Peoples R China
3.Wuhan Univ, State Key Lab Water Resources & Hydropower Engn, Wuhan 430072, Hubei, Peoples R China
4.Hubei Prov Collaborat Innovat Ctr Water Resources, Wuhan 430072, Hubei, Peoples R China
5.Wuhan Univ, Hubei Prov Key Lab Water Syst Sci Sponge City Con, Wuhan 430072, Hubei, Peoples R China
6.Chinese Acad China, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
7.Beijing Normal Univ, Coll Water Sci, Beijing 100875, Peoples R China
8.Beijing Key Lab Urban Hydrol Cycle & Sponge City, Beijing 100875, Peoples R China
Recommended Citation
GB/T 7714
Li, Hao,Liu, Liu,Shan, Baoying,et al. Spatiotemporal Variation of Drought and Associated Multi-Scale Response to Climate Change over the Yarlung Zangbo River Basin of Qinghai-Tibet Plateau, China[J]. REMOTE SENSING,2019,11(13):21.
APA Li, Hao.,Liu, Liu.,Shan, Baoying.,Xu, Zhicheng.,Niu, Qiankun.,...&Xu, Zongxue.(2019).Spatiotemporal Variation of Drought and Associated Multi-Scale Response to Climate Change over the Yarlung Zangbo River Basin of Qinghai-Tibet Plateau, China.REMOTE SENSING,11(13),21.
MLA Li, Hao,et al."Spatiotemporal Variation of Drought and Associated Multi-Scale Response to Climate Change over the Yarlung Zangbo River Basin of Qinghai-Tibet Plateau, China".REMOTE SENSING 11.13(2019):21.
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