1. Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A & F University, Yangling, Xianyang 712100, China
2. Satellite Application Center for Ecology and Environment, Ministry of Ecology and Environment of the People’s Republic of China, Beijing 100094, China
3. Chengdu Hydroelectricity Construction Engineering Co., Ltd. of Sinohydro Bureau No. 7 Company, Chengdu 611130, China
4. Institute of Soil & Water Conservation, Northwest A & F University, Yangling, Xianyang 712100, China