地铁对城市公交系统特性和可达性的影响——基于空间结构差异视角

Impacts of Subways on the Characteristics and Accessibility of Public Transport Systems:Based on the Perspective of Spatial Structure Difference

以沈阳市主城区和大连市主城区为例,探讨地铁对空间结构不同的城市在公交系统特性和可达性上产生的影响以及影响存在的差异,分析差异形成的原因。研究结果表明:①地铁开通对沈阳市和大连市公交系统的特性和可达性均产生正向影响,影响程度以地铁线路为轴向外围递减;②地铁开通后大连市公交系统特性和可达性的变化更明显,地铁自身产生的影响在沈阳市表现得更显著,两城市公交系统特性和可达性的差异在地铁开通后扩大;③地铁开通后,单中心圈层结构城市公交系统集聚中心的集聚效应进一步增强,该类型城市内部各区域公交系统特性及可达性差异扩大,多中心组团结构城市公交系统特性及可达性水平则趋向均衡化。

In the cities with different spatial structures,the impacts of subways on the characteristics and accessibility of traditional public transport systems are quite different.Taking Shenyang and Dalian as examples,this study discusses the impacts on the characteristics and accessibility of public transport systems in cities with different spatial structures which occur when subways open and analyzes the reasons for the differences of impacts.The results show that:1)The opening of subways has positive impacts on the characteristics and accessibility of the public transport systems in Shenyang and Dalian,the degree of the impacts spreads out and gradually decreases along the subway lines.2)The impacts of the subways opening on the characteristics and accessibility of the public transport system in Dalian are more significant,and the impacts of subways themselves are more significant in Shenyang.The gap of the evaluation results of public transport systems characteristics and accessibility between the two cities increases after the subways open.3)With the opening of subways,the agglomeration effect of the cluster center of the public transport system in the single-center circle cities is further enhanced,and the regional differences are enlarged,while the development of public transport system in the multi-center group cities tends to be more balanced.