Abstract: The article reviews the mechanism of the impact of transportation infrastructure construction on economic growth， and empirically tests its direct impact and spatial spillover effects on economic growth. The results show that: 1） transportation infrastructure mainly promotes regional economic growth through strengthening the local market effect， price index effect， and knowledge spillover effect， and triggers spatial agglomeration and diffusion of economic activities， thereby demonstrating the spatial spillover effect of transportation infrastructure construction; 2） at the provincial spatial scale， transportation infrastructure construction has a significant direct promoting effect on local economic growth， with an output elasticity of 0.043-0.057; 3） the construction of local transportation infrastructure will inhibit the economic growth of surrounding areas through economic linkages， showing a negative spatial spillover effect; 4） other factors， such as human capital level， population size， urbanization rate， and industrial agglomeration， also exhibit significant promoting effects on regional economic growth.

Key words: transport infrastructure; economic growth; spatial spillover effects; spatial econometrics

摘要： 梳理交通基础设施建设影响经济增长的作用机理，并实证检验其对经济增长的直接影响和空间溢出效应。交通基础设施主要通过强化本地市场效应、价格指数效应和知识溢出效应三条路径促进地区经济增长，并引发经济活动的空间集聚和扩散，从而表现出交通基础设施建设的空间溢出效应；省级空间尺度下，交通基础设施建设对本地经济增长具有显著的直接促进效应，产出弹性在0.043~0.057之间；本地交通基础设施建设会通过经济联系抑制周边地区的经济增长，表现出负空间溢出效应；人力资本水平、人口数量、城市化率、工业集聚等其他因素对区域经济增长同样表现出显著的促进效应。

关键词: 交通基础设施；经济增长；空间溢出效应；空间计量模型