1. School of Geography, Geomatics, and Planning; Jiangsu Normal University; Xuzhou China
2. Synthesis Research Center of China's Ecosystem Research Network and Key Laboratory of Ecosystem Network Observation and Modeling; Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences; Beijing China
3. State Key Laboratory of Loess and Quaternary Geology; Institute of Earth Environment, Chinese Academy of Sciences; Xi'an China
4. School of Environment and Planning; Liaocheng University; Liaocheng China