Abstract: China's fertility transition process is characterized by a regionally progressive pattern. The process of fertility transition exhibits both temporal and spatial diffusion phenomena, with migrant flows serving as a crucial channel for fertility diffusion. Using data from the Life History Survey of the China Health and Retirement Longitudinal Study (CHARLS) 2014 and provincial fertility data, this paper examines the relationship between fertility environment changes resulting from inter-provincial migration and women's number of children ever born and reproductive behaviors. The analysis reveals that migration experiences from high-fertility regions to low-fertility regions reduce the lifetime number of children. Migration experiences in relatively low-fertility regions significantly decrease the probability of giving birth. This indicates that changes in the fertility environment serve as a critical pathway through which migration experiences shape reproductive behaviors. In the context of large-scale population migration from rural to urban areas and from central and western to eastern regions, this study provides a micro-level explanation for the diffusion phenomena observed in China's fertility level changes.

Keywords: Migration Experiences, Birth Numbers, Reproductive Behaviors, Diffusion

摘要： 中国的生育转变进程具有地区层面渐进式的特点，生育转变在不同地区呈现出时间和空间上的扩散现象，其中人口迁移流动是重要作用渠道。基于中国健康与养老追踪调查(CHARLS)2014年生命历程专项调查数据及省级生育水平数据，构建女性跨省迁移流动中的生育水平环境变化测量指标，并分析生育水平环境变化与终身生育子女数、生育行为之间的关系。研究发现，从高生育水平地区迁移流动至低生育水平地区减少了女性的终身生育子女数，迁移流动至低生育水平地区的经历显著降低了女性发生生育行为的可能性。这说明生育水平环境变化是迁移流动经历对生育行为产生影响的重要渠道。在人口大规模从农村流向城市、从中西部流向东部的背景下，研究结论为中国生育水平变化进程中的扩散现象提供了微观层面的证据。

关键词: 迁移流动经历, 终身生育子女数, 生育行为, 扩散