西部地区人口流动网络格局与影响因素分析

Analysis on Network Pattern and Influencing Factors of Population Flow in Western Region

基于2018年全国流动人口动态监测调查数据,运用社会网络分析和人口流动相对强度指数等方法,分析西部地区人口流动的空间格局,并构造QAP回归模型分析西部地区人口流动的影响因素。研究发现:西部地区城市间人口流动以省内迁移为主,人口流动呈现省会城市集聚特征,省际流动以就近迁移为主;西部地区城市内人口流动数量大的城市为经济发展水平较高的城市,人口流动强度高的城市多为边境小城市;西部地区各省会城市均对流动人口有较强吸引力;人均地区生产总值是促进人口流动的主要因素,而阻碍人口流动的主要因素则是城市距离,人均年末金融机构人民币各项存款余额、城镇职工基本养老保险参保人数、城镇职工基本医疗保险参保人数、第三产业占地区生产总值比重、专利授权数和互联网宽带接入用户数则对不同省份产生了异质性影响。

Based on the data from the 2018 National Dynamic Monitoring Survey of the Floating Population,this paper analyzes the spatial pattern of population flow in the western region by using social network analysis and the relative intensity index of population flow,and constructs a QAP regression model to analyze the influ-encing factors of population flow in the western region.The study found that inter-city population flow in the western region is dominated by inter-provincial migration,with population flow showing a concentration charac-teristic of provincial capital cities,and inter-provincial migration is dominated by nearby migration;cities with large internal population flow in western regions are cities with high economic development levels,and cities with high population flow intensity are mostly small border cities;all provincial capital cities in the western re-gion have strong attraction to the floating population;the gross regional product per capita is the main factor promoting population mobility,while the main factor hindering population mobility is the distance between cities.The per capita balance of RMB deposits in financial institutions at the end of the year,the number of partici-pants in the basic pension insurance for urban workers,the number of participants in the basic medical insur-ance for urban workers,the proportion of the tertiary industry in the gross regional product,the number of pat-ents granted and the number of Internet broadband access users have a heterogeneous impact on different provinces.