天津市人口分布特征研究

Study on Spatial Distribution of the Population in Tianjin District

运用人口密度、人口结构化指数、罗伦斯曲线及空间自相关模型,分析了天津市人口空间分布特征,结果表明:天津市各区县人口总数差异较小,但各区县人口密度差异巨大;人口分布的不均衡指数为0.3893,集中指数为0.0390,人口分布集中化趋势明显;人口罗伦斯曲线表明全市40%左右的人口居住在占土地面积不足2%的行政区域中;天津市全局Moran's I为0.4591,人口分布格局具有很强的空间正相关性;根据天津市人口密度、局部空间自相关分析结果,并耦合天津市市情,将天津市人口分布格局划分为三环结构。

Population density,imbalanced index,concentration index, lorenz curve and spatial auto-correlation analysis model were used to study the population distribution characteristic of Tianjin District and its spatial auto-correlation based on GIS soft. The results show that： The total population quantity of each county are almost the same but the difference of their densities is huge,showing very high density in Center City; The concentration index and imbalanced index of Tianjin District is0.0390 and 0.3893 respectively, indicating that the tendency of concentration is obvious and the population distribution is not balance among counties;Lawrence population curve shows that about 40% of the total population is centered in the land area accounting for less than 2% of the administrative area;The global Moran＇s I of Tianjin District is 0.4591,suggesting the population distribution is not a random process and the distributional pattern has a stronger spatial autocorrelation. Based on population density,LISA analysis results,combined with the situation in Tianjin city,Tianjin population distribution pattern can be divided into three-concentric-ring structure.