淮河流域人口分布空间格局研究

以淮河流域为研究区域,以县域为研究单元,选取人口数及人口密度为研究指标,通过20世纪80年代以来淮河流域人口密度、不均衡指数、重心移动、偏移-分享分析及空间自相关分析等来研究人口空间格局及其演变趋势.结果表明:淮河流域人口增长速度在变慢,人口密度仍在全国平均人口密度的4倍以上,人口分布存在一定的空间关联性,在淮河各支流的中、上游县市区域形成人口集聚区域,人口呈不均衡分布状态且不均衡趋势加强,人口重心逐渐向东北方向迁移.

Research on the Spatial Pattern of Population Distribution in the Huaihe River Basin

Taking Huaihe river basin as the study area and county level as the research unit,selecting data of population and population density of the Huaihe river basin since the 1980 s as the research indicators,the spatial pattern and evolving trend were studied through the related analysis of population density,unbalanced index,population gravity center model,shift-share analysis and spatial autocorrelation analysis. The results showed that the rate of population growth became slower; the population density was more than four times than the average of national's. There was certain spatial relevance on population distribution;it formed population agglomeration area in the upstream counties of various tributaries of the Huaihe river. The population distribution was imbalanced and such situation was enhanced. The population gravity center slowly moved to the east west.