transportation infrastructure accessibility spatial spillove

  本文关键词：基于可达性分析的高速公路投资空间溢出效应，由笔耕文化传播整理发布。

基于可达性分析的高速公路投资空间溢出效应

Using accessibility indicators and GIS to assess spatial spillovers of expressway investment：A case study in Jiangsu Province

[1] [2] [3] [4]

JIANG Haibing1, ZHANG Wenzhong1, QI Yi2, ZHOU Liang3 1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;2. School of Architecture an

[1]中国科学院地理科学与资源研究所,北京100101; [2]南京大学建筑与城市规划学院,南京210093; [3]南京大学地理与海洋科学学院,南京210093

文章摘要：基于可达性分析方法，探讨新建交通基础设施投资给邻近地区带来的空间溢出效应及其特征。以2005-2009年江苏省各市新建高速公路为例，通过GIS 空间分析模型、经济潜力指数及情景分析法，得到江苏各市新建高速公路投资建设带来的经济潜力收益值，并在此基础上应用平均溢出效应模型得到区际可达性溢出矩阵，结合各地交通投资与溢出效应货币化模型将区际溢出矩阵货币化，得到区际交通投资矩阵来重新分配各市交通投资成本，以此表示交通投资空间溢出效应。结果显示：可达性溢出效应传递基本上随着到新建高速公路距离增加而衰减，然而各市新建高速公路在邻近地区产生非均衡性的溢出效应，，新建高速公路方向、区位以及高速公路网络体系影响了溢出效应强度分布。中间地区交通建设更有助于推动边缘地区可达性水平提高，其交通投资溢出效应普遍比边缘地区规模大，溢出投资占实际投资比重高，区域边缘地区多数为溢出效应的输入地区。

Abstr：Choosing Jiangsu province as the study region, we measure spatial spillovers of 2005-2009 expressway investment based on the key methods including accessibility analysis, extract method, scenario analysis method, region spillover model and inter-regional spillover matrix. Then we monetize spatial spillovers by distributing the costs of the new incremental infrastructures according to the regional distribution of the potential accessibility benefits. Firstly we use network analysis in GIS toolbox to calculate and map economic potential benefit values between the two scenarios based on extract method and then based on these values we can acquire accessibility spillover matrix according to region spillover model. Secondly this matrix is monetized by distributing the costs of the investment in the new incremental infrastructures of the region according to the regional distribution of the economic potential benefits. Thirdly we apply the inter-regional spillover matrix of investments flows to characterize the ＂inner＂, ＂export＂ and ＂import＂ values of each type of the regional expressway investments based on the spatial spillover effects. Furthermore we can estimate the real investment as well as its differences with actual investment. By applying the above methods, we can analyze the potential beneficiaries of the new infrastructure spillovers effects and their spatial distribution.The result shows that intensity of accessibility spillover effects tends to be weak as the distance to new infrastructure increases on the whole. In addition the new expressway investment gives rise to non-equilibrium effects in the neighbouring regions since the direction and location of the new lines distorts the effect of the distance. Secondly

文章关键词：

Keyword：:transportation infrastructure accessibility spatial spillover transport investment

课题项目：国家自然科学基金重点基金项目（41230632）;国家自然科学基金青年项目（41301108,41001093）;中国博士后科学基金面上项目（2011M500374）

  本文关键词：基于可达性分析的高速公路投资空间溢出效应，由笔耕文化传播整理发布。