基于变异系数的我国城市化地域差异演变研究

Study on state urbanization change based on coefficient of variation

利用我国26个省会城市和4个直辖市的市辖区1998~2007年的非农人口和建成区面积统计数据,采用增长率和变异系数等指标对中国的城市化水平格局及地域差异变化进行研究.结果表明：研究期内我国东部城市化水平差异一直明显高于中、西部地区,但东中西部的差异有所缩小;城市化速率呈现明显的地域差异,2003年之前东部城市化速度最快,之后中部城市化速度最大;人口城市化水平明显滞后于土地城市化水平.可见,全国各部城市化水平的差距逐年缩小,然而各区域内部呈现出不同的分化特征.

The regional pattern and its change of urbanization level were studied based on statistic data of urban population and city built-up area from 1998 to 2007 of same scale cities,which were provincial capital cities and municipality cities,and index as Increase Rate and Coefficient of Variation were used.The results showed： the regional difference of the East was still higher than the West and the Middle area,but the difference was decreased;the urbanization rate showed the obvious regional difference,that of the East was rapidest before 2003 and the Middle area had been the rapidest after 2003;responses of urbanization of population lagged behind that of urbanization of land.In all,the areal difference of urbanization level had shrunk,but it showed the different shrinking pattern of inner pattern of every part.