Department of Urban and Resources Sciences Nanjing University Nanjing 210093 P. R. China;
Department of Urban and Resources Sciences Nanjing University Nanjing 210093 P. R. China;
Department of Urban Planning and Resources Sciences Xianning College Xianning 437005 P. R. China;
Department of Urban and Resources Sciences Nanjing University Nanjing 210093 P. R. China;
land transfer; spatial differentiation; land transaction; Changjiang River Delta;