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文章从城市质量和城市距离两方面改进城市引力模型,以广西西江经济带城市群为研究对象,对各城市间经济联系强度进行测算与分析。结果表明:南宁和柳州的经济联系总量最大,处于“双核心”地位;其它各市与核心城市及相邻城市的经济联系强度较大;城市间的经济联系总量差距明显。可通过实行“双核”、“圈层”和“组团”空间整合模式,实现城市群的协调发展。
This paper improves the model of urban gravity from both urban quality and urban distance, and takes the urban agglomeration of Xijiang Economic Belt in Guangxi as the research object, and calculates and analyzes the economic links among cities. The results show that Nanning and Liuzhou have the largest total economic ties and are in a “dual-core” status. The economic ties between other cities and the core cities and their neighboring cities are greater; and the differences in the total economic ties among cities are significant. The coordinated development of urban agglomerations can be achieved through the implementation of the spatial integration model of “dual-core”, “circle” and “grouping.”