村镇路网通达性与空间出行研究——以武汉市李集镇为例

道路网络是乡村地区社会经济发展的基础。综合道路网络分析和通达性分析方法，构建路网密度、公路可达性、接近中心性、直达性等指标研究了武汉市李集镇村镇范围内各行政村路网通达性空间格局，并结合农户调查将路网通达性与村民空间出行进行关联分析。结果表明：（1）境内部分行政村道路密度低、断头路较多，导致局部地区通达性较差；（2）受地理区位和公路覆盖两方面因素影响，境内行政村接近中心性呈现出明显的核心-边缘分布模式；（3）高等级道路覆盖不足，未能形成完善的路网体系，极大限制村民的对外出行效率、出行范围，显著影响居民出行满意度，并阻碍地区农业机械化推广和农业产业规模化发展。最后，结合路网通达性特征和居民出行需求，提出李集镇道路网络整治建议，研究结果对完善农村地区道路体系研究、指导新农村建设有一定意义。

Road Network Accessibility and Spatial Travel in Rural Areas: A Case Study of Liji Town in Wuhan City

Road network is the basis of social and economic development in rural areas. Based on the methods of road network and accessibility analysis, this paper build road network density, highway accessibility, closeness centrality, and straightness and other indicators to study the spatial pattern of road network accessibility in villages and towns, and correlated it with villagers’ spatial travel based on the survey of villagers. The results show that: (1) The density of roads is low and there are many broken roads in some villages, which cause poor accessibility in local areas; (2) The closeness centrality of each village shows a clear core-edge distribution pattern, affected by geographical location factors and highway coverage factors; (3) The shortage of high-grade road and it’s incompleteness greatly limit villagers’ travel efficiency and travel range, causing low satisfaction, and it holds back the progress of agricultural mechanization and the large-scale development of agricultural industry. Based on the characteristics of road network accessibility and villagers’ spatial travel demand, this paper gave advice on the road network remediation, the results might contribute to the study on road system in rural areas and the construction of new countryside.