1. School of Geography and Ocean Science, Nanjing University, Nanjing, People’s Republic of China
2. Key Laboratory of Coastal Zone Exploitation and Protection, Ministry of Natural Resources of China, Nanjing, People’s Republic of China
3. Collaborative Innovation Center of South China Sea Studies, Nanjing University, Nanjing, People’s Republic of China
4. Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, People’s Republic of China
5. Chinese Academy of Surveying and Mapping, Beijing, People’s Republic of China
6. School of Geography and Planning, Chizhou University, Chizhou, People’s Republic of China
7. Jiangsu Provincial Research Institute of Surveying and Mapping, Nanjing, People’s Republic of China