1. School of Geography and Remote Sensing, Guangzhou University, Guangzhou 510006, China
2. School of Geography and Planning, Sun Yat-Sen University, Guangzhou 510006, China
3. Guangdong Centre for Marine Development Research, Guangzhou 510220, China
4. Guangzhou Urban Planning and Design Survey Research Institute, Guangzhou 510030, China
5. Guangdong Enterprise Key Laboratory for Urban Sensing, Monitoring and Early Warning, Guangzhou 510060, China