湖北省县域道路网络综合通达性及其空间特征

道路网络通达性是区域交通体系建设所要考虑的重要方面。本文以GIS为技术手段,通过重力度量模型、道路加权和密度模型计算得出经济联系指数和道路加权核密度指数,并构建综合通达性指数来分析湖北省县域道路网络综合通达性及其空间特征分布。结果表明:(1)湖北省103个县经济联系指数以武汉市主城区最高;(2)道路加权核密度指数以武汉市东西湖区最高;(3)道路网络综合通达性最高的5个县级行政单元为硚口区、汉阳区、江岸区、江汉区、东西湖区。本文填补了目前国内省级交通网络通达性方面的研究空白,为湖北省道路交通网络的建设和布局优化提供了参考依据。

Comprhe ensive Accessibility and Spatial Characteristics of Road Network in Hubei Prvoince

Road network accessibility is an important aspect of the construction of regional transportation system .Based on the GIS technology , this paper calculated the economic linkage index and road weighted kernel density index , and constructed the comprehen-sive accessibility index through gravity measurement and weighted kernel density model to analyze the distribution of comprehensive ac -cessibility and its spatial characteristics in 103 of counties Hubei province .The results show that among 103 counties of Hubei prov-ince (1) economic linkage index is highest in Wuhan City , which similar to the spatial pattern and the "1+8 Wuhan city circle"eco-nomic development pattern;(2) the road weighted kernel density index in Dongxihu District of Wuhan city in Hubei province is the highest.In general, the Middle East area is higher than that of the western region with a decreasing ring ;(3) The highest comprehen-sive accessibility of road network includes Qiaokou District , Hanyang District, Jiang′an District, Jianghan District, and Dongxihu Dis-trict.This paper fills up the current domestic research on the accessibility of the provincial road network , providing a reference for the construction and layout optimization of the road network in Hubei province .