基于sDNA模型的路网形态对广州市住宅价格的影响研究

A Study on the Influrence of Urban Road Network on the Housing Price in Guangzhou Based on sDNA Model

住宅价格的研究是当今城市发展的重要议题,路网形态作为影响城市住宅价格的变量之一,在以往国内相关研究中较少被关注。本文基于改进后的空间句法(sDNA模型),结合特征价格法及核密度估计等方法,在对区域路网形态分析的基础上,研究了路网形态对2015年广州市一手商品房价格的影响。文章发现:(1)sDNA模型作为新兴的高级空间分析模型,是对传统空间句法模型的补充和发展,具有较好的应用前景;(2)广州市路网形态呈现出"中心—边缘"特征,环城高速以内的区域是接近度和穿行度的前景网络核心,环城高速以外的大部分区域位于接近度和穿行度背景网络;(3)接近度与穿行度影响住宅价格时产生不同经济效应:接近度与房价呈正相关关系,穿行度与房价呈负相关关系;(4)"车位配比"等变量对住宅价格产生一定影响,楼盘所属行政区对商品房售价产生的影响与区域路网形态特征相关。

The residence price is an essential issue in current urban development research. The urban road network is less concerned by domestic research in spite of playing an important role in housing price market. This paper which is based on the improved space syntax model （sDNA model）, hedonic price and kernel density estimation method try to study how road network affect the new house price of Guangzhou city. The result shows four important conclusions.1As an advanced spatial analysis method, sDNA model is a complement and development to classical spatial analysis research and has a great application prospect;（2）The road network of Guangzhou city shows the edge-center characteristic which means the region within the highway around the city is foreground of Closeness and Betweenness. Besides, the most of the outside the beltway area are located in the foreground of Closeness and Betweenness; （3）Closeness and Betweenness parameters produce different economic effects when affecting housing price. While housing prices are positively correlated in relation to Closeness and negatively correlated in relation to Betweenness; （4） Factors such as ＂parking ratio＂ and ＂decoration＂ may affect the housing price, while the administrative region which the house belongs to show the similar characteristic compare with the road network in affecting house price.