1. College of Geographical Science, Inner Mongolia Normal University, Hohhot 010022, China
2. Inner Mongolia Key Laboratory of Remote Sensing & Geography Information System, Inner Mongolia Normal University, Hohhot 010022, China
3. Inner Mongolia Key Laboratory of Disaster and Ecological Security on the Mongolia Plateau, Inner Mongolia Normal University, Hohhot 010022, China
4. Institute of Geography and Geoecology, Mongolian Academy of Sciences, Ulaanbaatar 15170, Mongolia
5. Institute of Biology, Mongolian Academy of Sciences, Ulaanbaatar 13330, Mongolia