基于断裂点理论的中心城市空间影响范围变化研究

我国城市经济区主要分为东北、华北、华东、华中、华南、西南、西北，其各大区级中心城市分别为沈阳、北京、上海、武汉、广州、重庆、西安。本文结合各个城市1993年、2005年的数据，依据空间相互作用理论，采用断裂点方法，根据七个中心城市的综合实力，确定了各自的吸引范围，并阐述和分析了七个城市空间影响范围的动态变化。

Change of the attractived region of central cities based on the breakpoint theory

In China, Urban Economic Zone is divided into Northeast, North, East, Central, South, Southwest, Northwest and its central cities were Shenyang, Beijing, Shanghai, Wuhan, Guangzhou, Chongqing, Xi＇an. In this paper, we use data of these cities in 1993 and 2005, based on spatial interaction theory, using methods of breaking point, according to the comprehensive strength of s even central cities, to determine their attractive scope. We describe and analyze the dynamic changes of the spatial extent.