自上世纪80年代实行住房改革以来，中国城市经历了由单位分房为主导的福利性住房制度向住房市场化制度的重大转变，城市居民的住房生涯也呈现出与西方国家相似的、以获得住房产权为目标的渐进式居住轨迹。微观层面居民的居住行为是城市空间演化的动力机制，不同群体居住行为的差异是城市社会空间分异的重要原因，同时也是阶层分化的表征。为加深对我国城市社会空间重构微观机制的理解，并为制定较为公平的住房政策提供理论和实证依据，本项目将采用生命历程理论框架从微观层面系统地研究不同群体的住房生涯及其差异。以上海为案例，通过收集回溯性调查问卷，描绘展示本地人、新市民和外地人三类人群的居住迁移模式和居住轨迹（住房区位、产权、品质等随时间变化的过程）差异，使用事件史分析方法剖析个人或家庭层级上的资源和限制如何与宏观层面的住房市场及制度性因素相互作用影响了居民的迁居行为，从而塑造了特定的居住轨迹。

Since the implementation of housing reforms in the 1980s, the housing system in urban China has changed dramatically from welfare-oriented toward market-oriented. Urban residents generally follow a conventional life-course in terms of ascending the housing ladder towards homeownership, which is similar to that of the Western countries. The residents’ housing behavior at the micro level is the driving force for the urban space evolution at the macro level. The disparities in housing behavior between different social groups will lead to urban socio-spatial differentiation, which is also the manifestation of social stratification. In order to deepen our understanding of the mechanism of urban socio-spatial reconstruction at the micro level, and to provide theoretical and empirical implication for formulating equitable housing policy, this project will adopt the life course approach to systematically study the housing career of different social groups. Taking Shanghai as a case study, through the collection of retrospective questionnaire, this project will illustrate the residential mobility pattern and housing trajectories (the changes of housing location, tenure, quality, etc. over time) of the locals, permanent migrants with local hukou, and migrants without local hukou. By using event history analysis, the project will investigate how the resources and restrictions at the individual or household level interact with the housing market and complex institutional circumstances at the macro level, and thereby affects residents’ housing behavior and shapes a particular housing trajectory.