江苏省县域人口长寿水平空间差异与成因探索

Exploration of Spatial Differences and Causes of Population Longevity in Jiangsu Province

基于我国第五、六次全国人口普查数据,利用3种人口统计方法进行了江苏省县域尺度人口长寿水平空间度量,并设计了改进的统计方法;借助GIS工具对县域长寿水平进行了聚类分析,研究了江苏省县域人口长寿水平与经济发展的关系。结果表明:(1)预期寿命法与老龄死亡率法存在很强的空间一致性,表现为苏南地区人口长寿水平显著高于苏北地区,但长寿人口比例法与二者的空间分布格局不一致,因此设计了改进的长寿人口比例法,其结果与上述两种方法一致;(2)江苏省人口长寿水平呈现明显的地域分布特征,高值主要集中在苏州、无锡、南通大部分地区以及南京市区,低值主要集中在宿迁、淮安、连云港等地区的县城以及盐城北部的县城,经济发达程度与江苏省人口长寿水平间存在较高的相关性。

Based on the data of the fifth and sixth national census of China,we used three demographic methods to calculate the spatial level of population longevity at county scale in Jiangsu Province.Then,we used GIS to study the relationship between population longevity level and economic development in Jiangsu Province.The results show that there is a strong spatial consistency between the life expectancy method and elderly population mortality rate,and high correlation between economic development and population longevity level in Jiangsu Province.The population longevity level of southern Jiangsu is significantly higher than that of northern Jiangsu.