基于空间句法的榆林中心城区空间结构特征分析

Analysis on Spatial Structure Characteristics of Yulin Downtown Based on Space Syntax

本文以榆林市中心城区为研究区,借助GIS技术平台和Depthmap软件,提取快速城市化时期三个时间段的城市交通网络轴线数据,根据空间句法的不同参数值对榆林中心城区内部空间形态特征进行定量化分析,结果如下:1982以来,榆林市形成以老城区为中心向南、向西扩展,由“单中心轴向”转换为“单中心跨越”最后到“多中心组团”的演变过程;城市空间的结构和功能演变趋于完善,由封闭走向开放,“新城发展+老城更新”发展方式使得城市的发展呈现“带状延伸,组团生长”的特征,但各组团以独立发展为主且连通性较差,协同度整体呈下降趋势。

Taking the downtown area of Yulin as the research area,with the help of GIS technology platform and Depthmap software,the paper extracts the axis data of urban transportation network in three periods of rapid urbanization stage, and carries out quantitative analysis on the internal space morphological characteristics of Yulin according to different parameters of space syntax. The results are as follows. Since 1982, Yulin has experienced a evolution process of expanding southward and westward with the old city as the center,and changing from “single center axial direction” to “single center span” and finally to “multi-center cluster”. The evolution of structure and function of urban space in Yulin tends to be complete, and changes from closed to open. The development mode of “new town development + old city renewal” makes the urban development show the characteristics of “strip extension and cluster growth”, but each cluster mainly develops independently with poor connectivity among them, and the coordination degree on the whole shows a downward trend.