1. School of Economics and Trade, Shandong Management University, Jinan 250357, China
2. School of Economics and Trade, Henan University of Technology, Zhengzhou 450001, China
3. Center of High-Quality Development Research, Beijing Academy of Science and Technology, Beijing 100009, China
4. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
5. College of Architecture and Landscape, Peking University, Beijing 100871, China