交通发展对中心城市空间扩展的影响

针对中心城-卫星城间交通在大城市空间结构扩展中的作用机理及贡献程度的量化研究问题,采用改进的传统土地预测引力模型,并结合计算机模拟技术,构建了中心城-卫星城间交通对城市空间扩展影响模型,揭示了中心城-卫星城间交通在大城市空间结构扩展中的作用机理及贡献程度.应用实例表明,中心城-卫星城间交通普遍化费用的降低,导致了城市扩展单元在卫星城分配比例的增长,而建成区和边缘区的分配比例则会降低.可通过发展中心城-卫星城间交通来引导城市空间向卫星城扩展.

Influence of transportation between central city and satellite city on urban spatial expansion

The quantification research on the function mechanism and contribute degree is the key problem between central city and satellite city to urban spatial expansion. This paper developed the traditional gravitation model, established the influence model by using the developed gravitation model and the technique of computer simulation, analyzed the function of transportation between central city and satellite city to urban spatial expansion. It is improved by an example that the development of transportation between central city and satellite city make the allocation proportion of urban expansion units increase in the satellite city, but make it decrease in the built-up area and the urban fringe. The conclusion is obtained that the city space can expand to satellite city by developing transportation between central city and satellite city. 3 tabs, 3 figs, 9 refs.