1. Research Center of Digital Mountain and Remote Sensing Application, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China
2. College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
3. Wanglang Mountain Remote Sensing Observation and Research Station of Sichuan Province, Mianyang, China
4. College of Forestry, State Forest and Grassland Administration Key Laboratory of Forest Resources and Environmental Management, Beijing Forest University, Beijing, China