我国省内省外流动人口生育水平差异及原因探析

根据2005年全国1％人口抽样调查、“五普”等资料数据，通过交叉分析和相关性分析对我国省内省外的流动人口生育水平及影响因素进行了描述和探析。研究结果显示：我国省内流动人口比省外流动人口的时期生育水平高，两者的一般生育率分别为45．47‰与34．17‰，总和生育率分别为1．215与0．817，终身生育水平低，省内流动人口的二孩及多孩率低于省外流动人口；因婚姻家庭因素而流动的人口在各年龄段的分布与流动人口年龄结构的错位，是造成省外流动人口时期生育水平低于省内流动人口的根本原因；总和生育率在反映省外流动人口生育水平时，并不能显示省外流动人口因家庭、婚姻化的发展而导致的生育水平上升，所以并不能反映省外流动人口真实的终身生育水平。

Different Fertility Levels of Floating Population Inside and Outside a Province and the Causes

According to China 1‰ Population Sample Survey in 2005 and the 5th census and other information, the author describes through cross and relevance analyses the different fertility rates of floating population inside and outside a province and then explores the causes. The results are shown as follow： the floating population inside the province has a higher period fertility level than that outside, with general fertility rate respectively 45.47 ‰ and 34.17 ‰, and the total fertility rate 1. 215 and 0.817; lifetime fertility inside the province is at a lower level, as the two - children and many - children rates inside are lower than that outside; there＇s a gap between the age structure of whole floating population and that of those floating for a marriage reason, which serves as the main cause why the outside period fertility level is lower; when the total fertility rate is used to describe the birth level of the outside floating population, it can not reflect the rise of the level owing to marriage and family changes, so it can not reflect the real lifetime fertility of the floating population outside the province.