The authors think the theory of socio spatial dialectic,which stresses that the relationship of man environment,including physical environment,social environment,constitutes the basis of urban social geography,should be the theoretical basis of urban residential differentiation research.

Since 1990s,the theoretical and empirical work in economic geography has experienced what might be termed a relational turn that focuses primarily on the ways in which socio-spatial relations of economic actors are intertwined with processes of economic change at various geographical scales.

Study of social space evolvement in urban fringes of megalopolis;

Social Space Differentiation in Urban China and the Hypothesis of Housing for the Mixed Income Dwellers——A Case Study of Shanghai;

By studying the politics of space in Xingfeng Dump of Guangzhou City, this paper maintains that the interaction among the government, the local forces, and the garbage collectors constitutes to the special social space of dump, whose nature is the production of social relations.