关中城市体系分布轴线计算与分析

Calculation and Analysis of Distributive Axises of Guanzhong Urban System

城市体系空间分布特征是从事区域规划、城市规划的基础.分布轴线是空间分布的描述方法之一,它是指能使城市体系中各城镇功能有机地联系,并能连续地集中表现城市体系特征的象征性线性空间,体现城市体系发展理论上的中心带.以城市人口、GDP等为规模指数,结合关中城市体系的空间分布特征,提出了关中地区纵横交叉轴线的设想,借助于属性加权抛物线拟合的方法,计算了关中城市体系的分布轴线,在此基础上针对西安市城市行政中心北移以及西咸一体化进行了分析.

Spatial distributive characteristics of urban system is the basis of regional ptannmg ana uroan planning. Distributive axis is one of the description of spatial distribution. It is very useful for connecting the functions among the systems, representing the theoretical center of urban system. The authors introduce the parameter estimation parabola fit method, using the urban population,GDP as the parameters, get the landscape orientation and portrait distributive axis of Guanzhong Urban System. Based on these results, the authors analyse the development of Guanzhong Urban System combined with the government northward movement and the integration of Xi＇an and Xianyang, and give some advises to the development of Guanzhong Urban System.