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Separating the impacts of climate change and human activities on actual evapotranspiration in Aksu River Basin ecosystems, Northwest China
Yang, Peng1,2; Xia, Jun1,3; Zhan, Chesheng1; Chen, Xuejuan1,2; Qiao, Yunfeng4; Chen, Jie3
2018-12-01
Source PublicationHYDROLOGY RESEARCH
ISSN0029-1277
Volume49Issue:6Pages:1740-1752
Corresponding AuthorXia, Jun(xiaj@igsnrr.ac.cn)
AbstractSeparating the impacts of climate change and human activity on actual evapotranspiration (ET) is important for reducing comprehensive risk and improving the adaptability of water resource systems. In this study, the spatiotemporal distribution of actual ET in the Aksu River Basin, Northwest China, during the period 2000-2015 was evaluated using the Vegetation Interfaces Processes model and Moderate Resolution Imaging Spectroradiometer-Normalized Difference Vegetation Index. The impact of climate change and human activity on actual ET were separated and quantified. The results demonstrated that: (1) the annual pattern of actual ET per pixel exhibited the highest values for arable land (average 362.4 mm/a/pixel), followed by forest land and grassland (average of 159.6 and 142.8 mm/a/pixel, respectively). Significant increasing linear trends (p < 0.05) of 3.2 and 1.8 mm/a were detected in the arable land and forest land time series, respectively; (2) precipitation was the most significant of the selected climate factors (precipitation, average temperature, sunshine duration, and wind speed) for all ecosystems. The second most significant was wind speed; (3) human activity caused 89%, 98%, and 80% of the changes in actual ET of forest, grass, and arable land, respectively, while climate change caused 11%, 2%, and 20% of the changes in actual ET, in the Aksu River Basin during 2000-2015.
Keywordactual evapotranspiration Aksu River Basin land use cover change vegetation interfaces processes model water balance
DOI10.2166/nh.2018.136
WOS KeywordWINTER-WHEAT ; WATER-BALANCE ; CROP PRODUCTION ; TRENDS ; YIELD ; EVAPORATION ; PLAIN ; GPP ; SATELLITE ; MODEL
Indexed BySCI
Language英语
Funding ProjectNational Basic Research Program of China (973 Program)[2015CB452701] ; National Natural Science Foundation of China[41571019]
Funding OrganizationNational Basic Research Program of China (973 Program) ; National Natural Science Foundation of China
WOS Research AreaWater Resources
WOS SubjectWater Resources
WOS IDWOS:000452413800004
PublisherIWA PUBLISHING
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/51481
Collection中国科学院地理科学与资源研究所
Corresponding AuthorXia, Jun
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430000, Hubei, Peoples R China
4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Yang, Peng,Xia, Jun,Zhan, Chesheng,et al. Separating the impacts of climate change and human activities on actual evapotranspiration in Aksu River Basin ecosystems, Northwest China[J]. HYDROLOGY RESEARCH,2018,49(6):1740-1752.
APA Yang, Peng,Xia, Jun,Zhan, Chesheng,Chen, Xuejuan,Qiao, Yunfeng,&Chen, Jie.(2018).Separating the impacts of climate change and human activities on actual evapotranspiration in Aksu River Basin ecosystems, Northwest China.HYDROLOGY RESEARCH,49(6),1740-1752.
MLA Yang, Peng,et al."Separating the impacts of climate change and human activities on actual evapotranspiration in Aksu River Basin ecosystems, Northwest China".HYDROLOGY RESEARCH 49.6(2018):1740-1752.
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