基于引力模型的中原城市群经济联系强度分析

Urban Economical Linkage in Central Plain Cities Based on Gravity Model

借助描述区域间相互作用强度的引力模型,测算了中原城市群各城市间相互联系的强度,并对其经济联系强度的特征进行分析。研究表明:①以郑州为中心,以洛阳、开封、新乡和许昌为次中心辐射整个中原经济区乃至中国中西部地区的多级城市体系的城市群结构已经形成。②中原城市群表现出"十字外接圆"构造,以洛阳—郑州—开封为横轴、以新乡—郑州—许昌—漯河为纵轴组成的"十"字形区域为中原城市群的核心发展区。

The strength of regional economic linkage and disparity characteristics were analyzed between every two cities in central plain cities. The results showed that the disparity of the quantity of economic linkage in every city was large and the hierarchical feature was very remarkable. Regional differentiation characteristics of the strength of the inter-city economic linkage are significant. The strength of economical linkage of Zhengzhou is the largest. A multistage city gradation system takeng Zhengzhou as the core and Luoyang, Kaifeng, Xuchang and Xinxiang as secondary central city will be formed in the development of central plain cities. The central plain cities exhibit characteristics of a cross-circumcircle with a longitudinal axis of Xinxiang-Zhengzhou-Xuchang-Luohe and a transverse axis of Luoyang-Zhengzhou-Kaifeng. The development of the central plain cities and central plain economical zone needs strengthening the construction of rapid transport network and its internal economic links.