1. Key Laboratory of the Coastal Zone Exploitation and Protection, Ministry of Land and Resource, JiangSu Land Surveying and Planning Institute, NanJing, JiangSu, China
2. Beijing University of Civil Engineering and Architecture, School of Surveying and Mapping and Urban Spatial Information, Beijing, China
3. Key Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, JiangSu, China