Guangzhou Institute of Geography, Guangzhou 510070, China;
Guangzhou Institute of Geography, Guangzhou 510070, China;
Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
Adam Mickiewicz University, Institute of Physical Geography and Environmental Planning, 61-680 Pozna(n),Poland;
National Academy for Mayors of China, Beijing 100029, China;
School of Geography and Planning, Sun Yat-sen University, Guangzhou 510275, China;