A case study of regional eco-hydrological characteristics in the Tao River Basin, northwestern China, based on evapotranspiration estimated by a coupled Budyko Equation-crop coefficient approach

查看全文 作　　者：LI [1,2]ChangBin;ZHANG [1]XueLei;QI [3,2]JiaGuo;WANG [1]ShuaiBing;YANG [1]LinShan;YANG [1]WenJin;ZHU [1]GaoFeng;HAO [1]Qiang

机构地区：[1]Key Laboratory of Western China’s Environmental Systems (Ministry of Education), Lanzhou University;[2]Center for Global Change and Earth Observations, Michigan State University;[3]Ocean College, Zhejiang University

出　　处：《Science China Earth Sciences》索引2015年第58卷第11期,共10页

基　　金：supported by the Doctoral Program of China’s Higher Education Research Fund(Grant No.20110211110011);the National Natural Science Foundation of China(Grant Nos.41001014,41240002,51209119) 摘　　要：In a case study in Tao River Basin, China, we derived a high spatial-resolution regional distribution of evapotranspiration(ET) using the single crop coefficient method and Budyko equation. We then further analyzed the spatio-temporal characteristics of this diverse eco-hydrological basin from 2001–2010. The results suggest that the single crop coefficient method based on leaf area index captures better spatial and temporal dynamics of the regional ET than did the Budyko Equation method. The rising temperature was the main reason for the increasing ET in the Tao River Basin during 2001–2010. Areas with high ET efficiency were distributed mainly in the areas where the vegetation coverage was high, and a lower runoff coefficient responded. The estimated spatial patterns of ET allowed an improved understanding of the eco-hydrological processes within the Tao River Basin and the method used might be generalized as a reference for future regional-scale eco-hydrological research. 关键词：中国西北部洮河流域系数法方程法水文特征区域生态蒸散发量作物

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A case study of regional eco-hydrological characteristics in the Tao River Basin, northwestern China, based on evapotranspiration estimated by a coupled Budyko Equation-crop coefficient approach

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