武汉都市圈中心地系统结构及扩散域研究

通过构建武汉都市圈中心地的中心性测度指标体系,运用因子分析法抽取6个主因子对都市圈内的26个县级及以上中心地进行中心性测度,并据之将武汉都市圈中心地划分为4个等级。运用数学建模方法将中心地等级、中心性综合得分与主要交通方式时速结合起来,将中心地的扩散域界定转化为不同交通方式、不同通行时间的时距函数。运用Arc GIS10.0平台对数据进行网络分析以获取各中心地的扩散域;叠加各等级中心地的扩散域,最终获得武汉都市圈扩散域空间嵌套模型。在中心地等级划分与扩散域嵌套空间模型基础上,分析了新时期交通因素、信息技术因素、制度因素等共同作用下的中心地系统格局与扩散域形成机理。

By constructing the center central indicator system of Wuhan metropolitan area and using the factor analysis method, this essay extracts six principal components of the 26 cities of Wuhan metropolitan area to measure their eentralities. They have been delimited four ranks. This essay transforms diffusion areas definition of central places into the different means of transportation and different opening hours intervallie function. This essay gets the central places＇ diffusion areas by the Network analysis datum on Arc GIS 10.0 Platform. The diffusion areas space nested model of Wuhan Metropolitan Area will get byoverlaying all rank central place diffusion areas. Also on the ba- sis, the essay analyses the central place system pattern and the formation mechanism of diffusion area under the action of the new era traffic factor, information technology factor and system factor so on.