东南沿海农村地区公路网通达性研究——以福建省霞浦县为例

Study on road network accessibility in Southeast coastal rural areas——A case study of Xiapu county,Fujian province

运用GIS技术,以福建省霞浦县为例,通过设计路网密度、连通度、可达性、与干线路网衔接性四个指标对位于东南沿海的霞浦县农村地区公路网的通达性进行了研究。研究显示:霞浦县农村路网通达性水平低,其空间格局与主要干线网走向有很大关联,其中,松城街道路网通达性最好,海岛乡通达性水平最低;路网通达性水平受多种因素综合影响,包括社会经济实力、地形地貌、节点布局以及与交通主干线的距离、政策因素等。

Through using GIS software and choosing density, connectivity, iaccessibility and connection to trunk road four indexs, we analyses comprehensive accessibility level of rural roads network of Xiapu County that located in the southeast coast of Fujian province. The results show that the accessibility lev- el of the rural roads network is rather poor, and the spatial pattern has a very large association with the towards of the trunk road in Xiapu County. Among those villages Songcheng town is the highest level, Haidao town is the lowest leavel. In the end, the study show that comprehensive accessibility level cor- relates to many factors, including the social economic strength, topography feature, node layout and dis- tance with the traffic trunk, policy factoretc etc.