1. Guangdong Provincial Key Laboratory of Urbanization and Geo-simulation, School of Geography and Planning, Sun Yat-sen University, Guangzhou, P. R. China
2. School of Geographic Sciences, Key Lab. of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai, P.R. China
3. Department of Urban Planning and Design, The University of Hong Kong, Hong Kong SAR, P. R. China