1. School of Geography, Nanjing Normal University, Nanjing, China
2. Miaoxiang Sanqi Technology Co., Ltd., Wenshan, China
3. Jiangsu Engineering Research Center for Soil Utilization & Sustainable Agriculture, Nanjing, China
4. Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, China
5. Key Laboratory of Virtual Geographical Environment (Nanjing Normal University), Ministry of Education, Nanjing, China