1. State Key Laboratory of Cryospheric Science, Northwest China Ecological Environment and Resource Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China
2. Key Laboratory of Ecohydrology of Inland River Basin, Chinese Academy of Sciences, Lanzhou 730000, China
3. University of Chinese Academy Sciences, Beijing 100049, China
4. Shanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, Northwest University, Xi' an 710027, China
5. College of Urban and Environmental Sciences, Northwest University, Xi' an 710027, China