环洞庭湖区人口城镇化的空间格局及影响因子

中部积水的湖盆地形使环洞庭湖区社会经济的空间结构不同于一般的平原地区。利用第六次人口普查的县域统计资料,对环洞庭湖各县市区人口城镇化水平进行空间分析发现,湖区人口城镇化水平呈现出明显的同心带状结构。对环洞庭湖各县市区的人口城镇化水平与其社会经济发展、交通区位和资源环境等3大类12个指标进行全因子相关分析和回归分析,结果显示:经济结构差异是人口城镇化空间结构特征形成的直接原因;农业现代化水平对湖区人口城镇化的空间分异产生了较大的影响;交通区位条件主要通过影响经济结构来影响人口城镇化水平;地形结构的差异则是湖区人口城镇化空间结构形成的自然基础。

Study on the spatial pattern and influencing factors of population urbanization of Dongting Lake area

The lake basin of Dongting Lake area with water inside is different from normal plain areas in the social and economic spatial structure.Based on the county data from the Sixth National Population Census in 2010,this article carries out spatial analyses of population urbanization levels of counties in this region and draws a conclusion that population urbanization levels of Dongting Lake area presents an obvious concentric ribbon structure.Regression and correlation analyses between population urbanization levels and the other 12 indices of socioeconomic development,traffic location and resources environment show that the difference of economic structure is the direct cause for the formation of spatial pattern of urbanization,and that economic development and agricultural industrialization have a great effect on spatial pattern of urbanization of Dongting Lake area.In addition,traffic score and economic location affect urbanization levels mainly by economic restructuring and investment in fixed assets.Above all,difference of terrain structure is the natural foundation of formation of spatial structure of population urbanization of the Dongting Lake area.