Territorial cohesion impacts of high-speed rail at different planning levels
Territorial cohesion impacts of high-speed rail at different planning levels
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DOI：
10.1016/j.jtrangeo.2011.10.008
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发表时间：
2012-09-01
影响因子：
6.1
通讯作者：
Monzon, Andres
中科院分区：
文献类型：
--
作者：
Ortega, Emilio;Lopez, Elena;Monzon, Andres
高速铁路（HSR）项目对区域凝聚力的影响评估已成为交通规划者面临的一个重要问题。高铁网络通常被设计成有效地连接强大的经济中心。因此，可达性的最大改善集中在高铁站点附近，而中间位置的可达性效益相对较低。如果高铁最终导致可达性水平的空间分布更加极化，则会出现负向的地域凝聚力影响。迄今为止，研究区域地理界限界定对高铁地域凝聚力影响测量的影响研究较少。在此背景下，本文提出了一种基于地理信息系统（GIS）的方法，分析了高铁投资导致的可达性地域分布的变化。在不同的规划水平上分析了这些变化，以评估地域衔接结果对尺度定义的敏感性。通过将该方法应用于西班牙2005-2020年PEIT（战略运输和基础设施计划）中包含的670公里加利西亚（西北）高铁走廊的开发，对该方法进行了测试。在不同的直接规划层面：区域、走廊和国家层面，以及从溢出效应的角度评估了凝聚力影响。高铁走廊的建设增加了可达性值，在国家和走廊层面均表现出正向的集聚效应，而在区域层面则表现出平衡效应和极化效应。这些差异主要是由于高铁站点的位置或周边城市到站点的交通网络质量，这决定了可达性改善的地域分布。从溢出效应的角度来看，也发现了类似的结果。(C) 2011 Elsevier Ltd.版权所有。
The assessment of the impacts of high-speed rail (HSR) projects on territorial cohesion has recently emerged as an important issue for transport planners. HSR networks are usually designed to interconnect strong economic centers efficiently. Hence, the greatest improvements in accessibility concentrate near HSR stations, whereas intermediate locations suffer from comparatively lower accessibility benefits. Negative territorial cohesion impacts appear if HSR ultimately results in a more polarized spatial distribution of accessibility levels.There has so far been little research aimed at exploring the implications of the definition of the geographical limits of study area in the measurement of HSR territorial cohesion impacts. In this context, this paper presents a Geographical Information System (GIS)-based methodology which analyzes changes in the territorial distribution of accessibility resulting from HSR investments. These changes are analyzed at different planning levels, in order to assess the sensitivity of territorial cohesion results to scale definition.The methodology is tested by its application to the development of the 670 km of the Galician (northwestern) HSR corridor included in the Spanish PEIT (Strategic Transport and Infrastructure Plan) 2005-2020. Cohesion impacts are assessed at different direct planning levels: regional, corridor and national levels, as well from the perspective of spillover effects. In all cases, the construction of the HSR corridor increases the accessibility values, and results show positive cohesion effects at the national and corridor levels, whereas at the regional level both balancing and polarization effects appear. These differences are mainly due to the location of HSR stations or to the quality of the transport network from the surrounding cities to the station, which determines the territorial distribution of accessibility improvements. Similar results are found from the spillover perspective. (C) 2011 Elsevier Ltd. All rights reserved.