1. Nanjing Institute of Environmental Science, MEP, Nanjing, People’s Republic of China
2. School of the Environment, Nanjing Normal University, Nanjing, People’s Republic of China
3. Key Laboratory of Virtual Geographic Environment (Nanjing Normal University), Ministry of Education, Nanjing, People’s Republic of China
4. State Key Laboratory Cultivation Base of Geographical Environment Evolution (Jiangsu Province), Nanjing, People’s Republic of China
5. Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, People’s Republic of China