1. Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai, China
2. School of Geographic Sciences, East China Normal University, Shanghai, China
3. Key Laboratory of Spatial Data Mining and Information Sharing of Ministry of Education, National & Local Joint Engineering Research Center of Satellite Geospatial Information Technology, Fuzhou University, Fuzhou, China
4. The Academy of Digital China, Fuzhou University, Fuzhou, China