1. Guizhou Provincial Key Laboratory of Geographic State Monitoring of Watershed, School of Geography and Resources, Guizhou Education University, Guiyang 550018, China
2. Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650221, China
3. University of Chinese Academy of Sciences, Beijing 100049, China
4. School of Mathematical Sciences, Chinese Academy of Sciences, Beijing 100049, China