1. Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology, Nanjing University, Nanjing, People’s Republic of China
2. School of Geography and Ocean Science, Nanjing University, Nanjing, People’s Republic of China
3. Collaborative Innovation Center for the South Sea Studies, Nanjing University, Nanjing, People’s Republic of China
4. Collaborative Innovation Center of Novel Software Technology and Industrialization, Nanjing University, Nanjing, People’s Republic of China