选取老龄化系数、老少比两个测度指标,采用探索性空间数据分析与GIS相结合的方法,从市域、县域、镇域三个尺度对2000、2010年中原地区人口老龄化的时空格局变化进行分析。结果表明:1中原地区整体及各个地市老龄化系数、老少比呈现波动上升的趋势。2从空间分异格局看,老龄化高水平区由局部区域向全区扩展。但是,随着研究尺度的不断细化,老龄化空间分布格局存在尺度差异性。3从空间关联特征看,中原地区人口老龄化系数、老少比呈现显著空间自相关。随着研究尺度不断缩小,冷热点空间集聚分布范围更加集中。然而,两个指标局部集聚特征的也表现出空间分布不一致。4结合多尺度的时空格局分异结果,从人口因素、经济因素、政策因素、公共医疗健康等方面进行了原因分析,并且对两个指标表现出的空间差异性做了具体阐释。
Based on the index of the aging coefficient, the ratio of the young population and the old, by the methods of exploratory spatial data analysis and GIS spatial technology, this paper gives spatio- temporal pattern analysis of aging population in Central Plains Region from multi-scale perspective including city scale, county scale and town scale from^2000 to 2010. Results show: Firstly, the index of aging coefficient and, the ratio of the young and the old, of the overall region and each city shows the waved rising trend, which means that the level of aging population is increasing, from^2000 to 2010. Secondly, the high level of aging has from some local areas to the whole region, from the spatial distribution pattern. Meanwhile, the spatial distribution patterns are various with different spatial scales. Thirdly, from the spatial-correlation indicator of the Moran's I index, the spatial-correlation state show a significant positive correlation of the aging population coefficient and the ratio of the young and the old.. The hot/cold spot areas become more and more concentrated with continuous refinement of research scales. Moreover, the local spatial- correlation pattern is not consistent. Finally, the spatial difference of the index of the aging coefficient and, the ratio of the young and the old, is provided. Furthermore, the underlying causes are discussed from aspects of population, economic, policy, public healthcare.