1. School of Public Administration, Hohai University, Nanjing 211100, China
2. Center for Environmental and Social Studies, Hohai University, Nanjing 211100, China
3. The Second Institute of Geological and Mineral Resources Survey of Henan, Zhengzhou 450001, China
4. Henan Shanshui Geological Tourism Resources Development Co., Ltd., Zhengzhou 450001, China