1. School of Geography, Geomatics and Planning, Jiangsu Normal University, No. 101 Shanghai Road, Tongshan New District, Xuzhou 221116, China
2. Xuzhou Natural Resources and Planning Bureau, No. 7 Jingboxi Road, Yunlong District, Xuzhou 221018, China
3. People’s Government of Xingfu Town, No. 10 Xingfu Road, Yun County, Lincang 675801, China