基于二阶段嵌套锡尔系数的人口分布的差异研究  

Study on Population Distribution Inequalities Based on the Two-Stage Nested Theil Decomposition Method

作　　者：闫庆武[1] 卞正富[1] 

机构地区：[1]中国矿业大学环境与测绘学院

出　　处：《西北人口》2008年第5期103-106,110,共5页Northwest Population Journal

基　　金：国家自然科学基金项目(50574095);教育部新世纪优秀人才支持计划资助项目(NCET-04-0487)

摘　　要：文章首先提出了人口分布锡尔系数的概念及其一阶、二阶分解方法,接着以江苏省为研究区域,基于三大地带(苏南、苏中和苏北)、13个地级市、106个县(县级市、市辖区)三级结构的地域行政单元,分别运用一次、二次分解对全省的人口分布的区域差异进行细分测度,将江苏省人口分布的差异性分解为苏南、苏中、苏北三大地带间的差异、三大地带内地级市之间的差异以及各地级市的内部差异三部分。其主要结论为:以地级市为计算单元的一阶段分解结果显示,苏南、苏中和苏北三个地带间人口分布的差异性是造成一阶段分解的全省人口分布差异的主要原因;以县级行政单元的二阶段分解结果表明,地级市内部的差异是江苏省人口分布的整体差异的主要构成部分;通过运用局部G统计量对各县级单元人口分布的热点探测发现,"热点"地区的人口分布差异性大,"冷点"地区的差异性小。In this paper, an inequality composition method ,the two-stage nested Tbeil decomposition method,which is an extension of the ordinary one-stage Theft decomposition method,are employed to study on the inequality of population distributian. First, the definition of inequality of population distribution index based on Theil which is called Tpop is put forward. And then one-stage and two-stage nested Theft decomposition of Tpop is brought forward.Based on the different regionalism,fractinnized the inequality to find the source of the whole inequality of population distribution through decomposed the Tpop in Jiangsu.Via the decomposition ,we can found that the whole inequality of population distribution was made up of three parts,the most distinct one is that of 106 counties, in the next place, the diferenee in the cities plays an important part also, finally,the most inapparent one is the difference among the three belts in the province. By computing local G statistics index based on counties the following conclusion can be drawn： the inequality of population distribution in hot spots is big, the one in cool spots is small.

关 键 词：锡尔系数 人口分布 江苏省 差异分析 热点探测 

分 类 号：C922[社会学—人口学]