不同形状类型乡村聚落道路平面形态量化研究--以陕南地区乡村聚落为例

Quantitative study on the plane shape of rural settlements roads with different shape type--A case study of rural settlements in southern Shaanxi

为准确解析乡村聚落不同拓展类型下乡村聚落道路的适应策略,采用特征值法、相关性分析等定量研究的方法,按照聚落不同拓展类型所呈现的团状、带状、指状3种形状选择研究对象,通过道路的长度、曲折度和角度3个方面在不同形状聚落的形态差异对聚落道路的适应策略进行分析。结果表明,不同形状聚落的道路在道路等级构成、道路长度和曲折度方面存在显著差异,道路长度、曲折度与聚落形状指数显著相关。陕南乡村聚落的不均衡拓展是聚落道路形态特征形成的基础条件,陕南乡村聚落道路系统通过向外拓展组织模式与延伸道路长度来扩大占据空间的深度,以适应聚落不同的拓展类型。

In order to accurately analyze the adaptation strategies of rural settlement roads under different expansion types of rural settlements,the research objects are selected according to the three settlement shapes of stripped,cluster and finger-shaped presented by different expansion types of settlements by using quantitative research methods such as eigenvalue method and correlation analysis.According to the morphological differences of settlements in different shapes in three aspects of road length tortuosity and angle,the adaptation strategies of settlement roads are analyzed.The results show that there are significant differences in road grade composition,road length and tortuosity among roads with different shapes of settlements,and the road length and tortuosity are significantly correlated with the settlement shape index.The unbalanced expansion of rural settlements in southern Shaanxi is the basic condition for the formation of the morphological characteristics of settlement roads.The road system of rural settlements in southern Shaanxi adapts to different expansion types of settlements through the outward expansion organization mode,the extension of road length and the expansion of the depth of occupied space.