1. College of Urban and Environmental Sciences Northwest University No. 1, Xuefu Avenue, Guodu Educational Technology Industry Zone, Chang'an District Xi'an 710069 China
2. Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity No. 1, Xuefu Avenue, Guodu Educational Technology Industry Zone, Chang'an District Xi'an 710069 China
3. Key Laboratory of Land Surface Patterns and Simulation Institute of Geographic Sciences and Natural Resources Research CAS No. 11, Datun Road, Chaoyang District Beijing 100101 China
4. University of the Chinese Academy of Sciences No. 19, Yuquan Road, Shijingshan District Beijing 100049 China
5. School of Ecology and Environment Northwestern Polytechnical University No. 1 Dongxiang Road, Chang'an District Xi'an Shaanxi 710072 China