1. School of Earth Sciences, Yunnan University, Kunming 650504, China
2. Research Center on Mountain Torrent & Geologic Disaster Prevention, Ministry of Water Resources, Wuhan 430010, China
3. Honghe Tropical Agriculture Institute of Yunnan, Honghe 661300, China
4. Kunming Surveying and Mapping Management Center, Kunming 650500, China
5. Beijing Institute of New Technology Application, Beijing 100081, China