基于对空间极化概念界定的基础上,首先从要素流的视角构建区域发展衡量指标——城镇集聚能力,并从整体上评价1995-2008 年东北三省区域发展演变格局;其次利用差异指数和极化指数,从不同集聚层次对东北三省区域发展非均衡性和极化程度进行测度。研究发现：①从区域发展衡量指标的动态演变格局来看：1995-2008年间东北三省区域发展是一个波浪起伏的过程,整体水平稍有下降;集聚能力得分排序及其演变趋势表明,中心城市、交通枢纽城市和资源城市主宰着东北三省区域发展格局的演变;四中心城市呈现出由北往南递增的发展趋势,且由四城市形成的经济区实体功能开始显化,并沿哈大铁路形成一条不连续的“极化轴”,区域发展中心逐步南移;区域发展的地域差异性非常明显。②从区域发展的非均衡性和极化指数来看：整体上呈增长趋势,其中市区极化程度明显高于县(县级市),且发展演进方向互异;空间分布上非均衡性指数表现出辽宁省>黑龙江省>吉林省,而崔-王指数为黑龙江省>辽宁省>吉林省;城市类型(资源城市与非资源城市)表现出异向发展趋势,其中资源城市呈绝对的下降趋势,且资源城市的极化程度明显低于非资源城市。

Based on the concept of spatial polarization, this paper built up a regional development index from the perspective of element flows, which is called urban agglomeration ability, and analyzed the regional development evolution in the three provinces of Northeast China from 1995 to 2008 on the whole. Secondly, the paper used the difference indexes and polarization indexes to measure the degrees of inequality and polarization of the regional development in Northeast China for different concentration levels. The results show that: (1) from the viewpoint of the dynamic evolution of the patterns of regional development, from 1995 to 2008, the regional development of Northeast China had an undulating course, and the overall level was slightly decreased. The agglomeration ability and its evolution trend showed that the center cities, the traffic hub cities and the resource cities played an important role in the regional development pattern evolution. It was showed that the four cities showed that the development trend was increased from north to south. The formed city economic zones began to present their functions, and the Harbin-Dalian Railway became a discrete"polarization axis". The regional development center was gradually moved to the south with the differences of the regional development. (2) The whole region showed a growing trend, in which the municipal administrative areas had a higher degree of polarization than the county level subdivisions, with different directions of evolution. The spatial distribution of inequality index had a sequence of Liaoning Province > Heilongjiang Province > Jilin Province, and the TW index showed a sequence of Heilongjiang > Liaoning > Jilin. The resources cities had an absolute decline, and had a lower polarization degree than the non-resources cities.