1. Key Research Institute of Yellow River Civilization and Sustainable Development & Collaborative Innovation Center on Yellow River Civilization of Henan Province, Henan University, Zhengzhou, China
2. State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
3. Institute of Geography & Geoecology, Mongolian Academy of Sciences, Ulaanbaatar, Mongolia
4. College of Physical Education, Henan Normal University, Xinxiang, China
5. Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Henan University, Kaifeng, China