1. College of Water Resources and Architectural Engineering, Northwest A&F University, Xianyang 712100, China
2. Key Laboratory for Agricultural Soil and Water Engineering in Arid Area of Ministry of Education, Northwest A&F University, Xianyang 712100, China
3. College of Natural Resources and Environment, Northwest A&F University, Xianyang 712100, China
4. China Coal Aerial Survey and Remote Sensing Group Co., Ltd., Xi’an 710100, China