1. Key Laboratory of Western China’s Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, China
2. Key Laboratory of Remote Sensing of Gansu Province, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, China
3. Research Center for Silk Road Economic Belt, Lanzhou University, Lanzhou, China
4. Chinese Academy of Sciences Center for Excellence in Tibetan Plateau Earth Sciences, Beijing, China