基于村域微尺度的人口流动类型空间分异及作用机理——以云南玉龙县为例

村域微尺度人口流动过程对县级单元就近城镇化发展、小城镇发展和新型农村社区建设等方面影响凸显。以云南玉龙县为研究区域,以行政村为基本空间单元,深入剖析人口流动村域类型空间分异特征,识别人口流动村域类型空间分异的关键影响因素及其作用机制。研究表明：①玉龙县村域人口流动特征呈现明显的空间分异,具体表现在人口流动强度和人口流动活跃度两个方面;②玉龙县人口流动空间结构整体呈“圈层+扇形”模式：第一个圈层是净流入活跃型行政村,第二个圈层是非活跃型行政村,第三个圈层是非活跃型和净流出活跃型的混合行政村;③人口流动村域类型分异格局是经济因素、交通因素、社会因素和自然因素等共同作用的结果。

SPATIAL PATTERN AND INFLUENCING MECHANISM OF POPULATION MIGRATION AT THE VILLAGE SCALE: THE CASE OF YULONG COUNTY IN YUNNAN PROVINCE

The population migration process at the village scale has mass and strong influences on the urbanrural system, small city and town development, and new rural community construction in the county region. Taking village/communities as the spatial scale, taking Yulong Naxi autonomous county in Yunnan province as the study area, based on the 1% of population survey sampling data of Yulong county in 2015, this study classified all the counties/communities into four migration types according to the two indexes of population floating intensity (PFI) and population floating activity (PFA). And then this paper investigated the spatial pattern differentiation of population migration using GIS spatial techniques. Moreover, this study constructed the multinomial logistic regression model to explore the key factors and the influencing mechanism of spatial pattern of population migration. Results showed that:1) The population migration exhibited obviously spatial differentiation in the two aspects:The intensity of population migration and the activity of population migration in Yulong county. The intensity of population migration exhibited the trend of "net in-migration in the center region and net out-migration in the fringe region"; 2) The population migration showed the spatial structure of the "circle + sector" in Yulong county. 3) The spatial pattern of population migration was the combined result of economic factors, transportation factors, social factors and natural factors in the plateau mountainous area.