我国人口流动进入总量稳定、形式多元的新时代，存量流动人口的再流动对未来人口分布和新型城镇化空间战略目标的实现具有重要意义。本项目关注人口再流动的空间格局、动力机制和城镇化空间效应。首先，在理论分析和国际比较的基础上，基于人口普查个体数据科学界定各类流动人口，描绘我国人口流动类型结构的演变趋势，分析人口再流动的时空格局与群体分异。其次，利用全国和典型城市群的人口再流动问卷调查和访谈数据，在个体和区域两个层面上探究个体-家庭因素、城市-区域发展、国家-地方政策及其交互作用如何影响人口再流动的行为决策、塑造人口再流动的空间格局。最后，系统评估人口再流动对当前和未来我国城镇化空间格局的影响，提出新型城镇化空间战略实现的政策优化和优先级建议。研究成果可丰富中国特色城镇化与人口流动迁移的理论方法，也可为我国流动人口市民化和新型城镇化发展提供认识依据和决策参考。

Migration in China has entered a new stage in which the total number of domestic migrants has remained relatively constant, but the ways through which they migrate have become increasingly diversified. This special characteristic indicates that the migration pattern of existing migrants, especially that of repeat migrants, is the key to the understanding of the population distribution and to the making of new urbanism. Therefore, the objective of this project is to analyze the spatial pattern of, the influencing factors behind, and the urbanization effect resulted from, the repeat migration. Specifically, it will first define the different kinds of migration in China by adopting and adjusting the corresponding international definitions. These tailored definitions will serve as the basis for the investigation of the compositional evolution of Chinese migration, the spatial pattern of repeat migration, and the characteristics of different migration groups. All these analyses will be based on census microdata. Second, this project will explore the separate and interactive impacts of individual-family factors, city-region developments, and national-local policies on the decision-making process of repeat migrants, and thus on the spatial pattern of repeat migration. This part will mainly use the data from the national surveys, such as Migrants Population Dynamic Monitoring Survey Data, and also from surveys conducted in strategic urban agglomerations. It will also use interviews to delve into more nuanced aspects. Finally, this work will systematically evaluate the impact of repeat migration on the contemporary urbanization patterns as well as future ones, which has special significance in utilizing the practices of the making of new urbanism. In total, the results of this project will not only have a theoretical contribution to China’s urbanization in particular and migration studies in general, but also have practical implications for migrant workers’ citizenization and more broadly for new urbanism in China.