1. College of Life Science, China West Normal University, Nanchong, Sichuan, PR China
2. College of Geographical Science, China West Normal University, Nanchong, Sichuan, PR China
3. Sichuan Provincial Engineering Laboratory of Monitoring and Control for Soil Erosion on Dry Valleys, Nanchong, Sichuan, PR China
4. Liangshan Soil Erosion and Ecological Restoration in Dry Valleys Observation and Research Station, Xide, Sichuan, PR China
5. State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing, PR China
6. College of Environmental Science and Engineering, China West Normal University, Nanchong, Sichuan, PR China