中国城市影响域的空间格局研究

文章通过对引力定理的研究证明了城市影响域的几何特征和其随距离摩擦系数的变化规律,利用ARCGIS计算了全国城市引力场的分布,利用空间聚类分析确定了中国的城市群,利用空间溶解划分了各城市的影响域,并在城市群和城市影响域的基础上结合自然和经济区位将中国划分为13个经济区.主要结论有:城市引力场的分布是区域不均衡发展的表现形式;可通过城市引力场分布状况研究城市体系的空间结构和特征;中国的城市影响域远未形成标准的正六边形影响域镶嵌结构;城市引力场较弱的经济区的地域可能被较强的经济区挤占.

Research on the Urban Influential Spheres in China

Through research on the gravity model,the paper proofed the geometric characteristics of urban influential sphere and the principles for the change of urban influential sphere along with the evolution of distance decay index,calculated the distribution of the gravitational field by using ARCGIS,established a spatial cluster system for the megalopolises in China,delineated urban influential spheres by dissolving spatial features,and compartmentalized China into 13 economic regions on the base of megalopolis clusters and urban influential Spheres combining with the physical and economic locations.Major conclusions are: the distribution of urban gravitational field is the manifestation of regional unbalanced development;the spatial structure and characteristic of urban system can be studied through the distribution situation of urban gravitational field;the urban influential spheres in China has not formed the mosaic structure of standard regular hexagon;the economic region with weak urban gravitational field may be crowded out by the region with stronger urban gravitational field