1. Chongqing Jinfo Mountain Karst Ecosystem National Observation and Research Station, School of Geographical Sciences, Southwest University, Chongqing, People’s Republic of China
2. State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, People’s Republic of China
3. Chongqing Key Laboratory of Karst Environment, School of Geographical Sciences, Southwest University, Chongqing, People’s Republic of China