1. College of Geographical Science, Inner Mongolia Normal University, Hohhot, People’s Republic of China
2. Inner Mongolia Key Laboratory of Disaster and Ecological Security on the Mongolian Plateau, Inner Mongolia Normal University, Hohhot, People’s Republic of China
3. Inner Mongolia Key Laboratory of Remote Sensing and Geographic Information Systems, Inner Mongolia Normal University, Hohhot, People’s Republic of China
4. Institute of Grassland Research, Chinese Academy of Agricultural Sciences, Hohhot, People’s Republic of China
5. School of Ecology and Environment, Inner Mongolia University, Hohhot, People’s Republic of China