1. Key Laboratory of Remote Sensing of Gansu Province, Heihe Remote Sensing Experimental Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, People’s Republic of China
2. University of Chinese Academy of Sciences, Beijing, People’s Republic of China
3. CAS Center for Excellence in Tibetan Plateau Earth Sciences Beijing, China
4. Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, People’s Republic of China
5. Gansu Forestry Polytechnic, Tianshui, People’s Republic of China