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

作者：Li ChangBin^*; Zhang XueLei; Qi JiaGuo; Wang ShuaiBing; Yang LinShan; Yang WenJin; Zhu GaoFeng; Hao Qiang

来源：Science China Earth Sciences, 2015, 58(11): 2103-2112.

DOI：10.1007/s11430-015-5087-5

• evapotranspiration
• Budyko Equation
• single crop coefficient
• eco-hydrology
• Tao River Basin

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.

• 出版日期2015-11
• 单位浙江大学; 兰州大学