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将中原经济区30个省辖市市区作为研究对象,按照由“线”→“点”→“面”的分析思路,运用引力模型、潜能模型与潜能得分模型、经济隶属度模型等各种模型,定量分析1990~2010年间中原经济区城市间相互作用时空格局的演变过程与特征。结果表明:城市间相互作用强度的时空差异明显。“线”层次上,城市间的引力和城市联结线数目的增多,逐渐形成辐射网络,引力和联结线数目的变化存在时空差异性。“点”层次上,通过“线-点”叠加分析,城市最大联结线数目增多和城市潜能等级提升的时空差异性明显。而且1990~2010年间各个城市潜能等级跃迁的时空差异明显。“面”层次上,近20多年来,区域中心城市没有变化,但4个中心城市的腹地变化明显,核心组团——郑州组团1990~2000年北扩,2000~2010年东扩;1990~2010年,潜能高值区域的空间收缩也表现出阶段性特征。
Taking the urban areas of 30 provinces in the Central Plains Economic Zone as the research objects, according to the analysis ideas of “Line ” → “Point ” → “Area ”, using the gravitation model, potential model and potential score model, Membership degree model and other models to quantitatively analyze the evolution process and characteristics of the spatial-temporal pattern of the inter-city interaction in the Central Plains Economic Region from 1990 to 2010. The results show that the spatial and temporal differences in the intensity of inter-city interaction are obvious. At the “line” level, the gravitational attraction between cities and the number of urban connecting lines have increased, and a radiation network has been gradually formed. The changes in the number of gravitation and connecting lines have time-space differences. At the level of “Dian ”, through the “line - spot” overlay analysis, the spatial and temporal differences of the maximum number of urban connection lines and the increase of urban potential levels are obvious. Moreover, the spatiotemporal differences between the potential level transitions of various cities in 1990-2010 are obvious. In the past 20 years, there has been no change in the regional central cities, but the changes in the hinterland of the four central cities are obvious. The core delegation, the Zhengzhou delegation, expanded from 1990 to 2000 and expanded eastward from 2000 to 2010. By 2010, the spatial contraction of high potential areas also showed phased features.