不同空间尺度的江苏省区域经济差异研究

运用基尼系数、空间自相关等方法分析改革开放以来县域和地级市空间尺度下的江苏省区域经济差异变化及其空间机制。研究表明:改革开放以来江苏省县域和地级市尺度的区域经济差异在2008年前均呈扩大趋势,以后差距缩小,且县域尺度大于地级市尺度。在县域和地级市尺度上江苏省区域经济差异均存在明显的空间正相关关系,且不断增强,在县域尺度空间集聚更强。在地级市水平上,苏北的低水平集聚是其产生区域差异的主要原因,而在县域尺度上则苏南的高水平集聚是江苏区域差异主要原因。针对江苏省区域经济差异重点关注县域尺度的区域差异,在地级市尺度上侧重提升落后地区发展水平,而在县域空间尺度上以促进高水平地区的空间扩散为主。

REGIONAL ECONOMIC INEQUALITIES IN JIANGSU AT DIFFERENT SPATIAL SCALES

From the view of the prefecture-level city and county, this paper analyzes the change and spatial mechanism of regional economic inequality in Jiangsu by Gini Coefficient and spatial autocorrelation method since 1978. The research reveals that since 1978 regional economic inequality is shown enlarge a trend before 2008, while after 2008 clearly narrow and the regional economy inequality of county is higher than that of the prefecture-level city. On the scale of county and prefecture-level city, regional economic inequality in Jiangsu has notable positive correlation, and constantly enhances. Spatial agglomeration is obvious in the smaller scale. A high-level agglomeration in the south of Jiangsu and a low-level agglomeration in the north of Jiangsu result in regional economic inequality and spatial autocorrelation on the scales. But in the scale of the prefecture-level city, the low-level agglomeration in the north of Jiangsu is the main reason to lead to regional economic inequality and spatial correlation, while in the scale of county, the high-level agglomeration in the south of Jiangsu is the key cause. Hence, we should pay more attention to regional inequality of county, focusing on improving the economic level in under-developed areas at the scale of prefecture-level city and promoting spatial diffusion in higher-developed areas at the scale of county.