基于双重差分模型的高速铁路开通对我国地方吸引外商投资的影响分析  

Influence of Opening High Speed Railway on Attracting Foreign Investment in China Based on Difference-in-difference Model

作　　者：李树祯 张峰 张琬琦[2] 成尔卓 LI Shuzhen;ZHANG Feng;ZHANG Wanqi;CHENG Erzhuo(School of Economics,Nankai University Binhai College,Tianjin 300270,China;School of Economics,Nankai University,Tianjin 300071,China;Nankai University Multinational Corporation Research Center,Tianjin 300071,China)

机构地区：[1]南开大学滨海学院经济管理系,天津300270 [2]南开大学经济学院,天津300071 [3]南开大学跨国公司研究中心,天津300071

出　　处：《铁道运输与经济》2024年第8期171-179,189,共10页Railway Transport and Economy

基　　金：天津市教育科学规划课题(FIE210053);南开大学文科发展基金项目(ZB22BZ0208);天津市教育重点课题调研课题(JYDY-20232003);深圳市教育科学规划课题(JYPJ22001);天津市教委科研计划项目(2020SK134);国家级大学生创新创业计划项目(202213663011)。

摘　　要：为探讨高速铁路开通对我国地方吸引外商投资的影响,以“高速铁路开通”作为切入点,采用双重差分模型(DID)进行回归检验,分析得出:高速铁路开通这一外部政策的发生加强了区域经济活动的空间联系,提高了生产要素流动效率,开通高速铁路后城市的外商投资金额显著升高。通过稳健性检验进一步证实了上述结论的稳定性和准确性:一个地区开通多个高速铁路站点会进一步促进空间可达性和要素流动效率,这种叠加效应会进一步提升外商投资规模;安慰剂检验也表明外商投资金额变动来源于高速铁路开通这一外部政策;替换外商投资衡量指标后结果依然显著,再次验证高速铁路开通在多个维度上显著促进外商投资水平。To investigate the influence of opening high speed railway on attracting foreign investment in China,this paper took the perspective of the“high speed railway opening”policy and uses the difference-in-difference(DID)model to perform regression testing.The analysis shows that the external policy of high-speed railway opening strengthens regional economic ties and improves production factor flow efficiency.After the opening of the high speed railway,the amount of foreign investment has increased significantly.The robustness test further confirms the stability and accuracy of the above conclusions:The opening of multiple high speed rail stations in a region will further promote spatial accessibility and factor flow efficiency,and this superimposed effect will further increase the scale of foreign investment.The placebo test also indicates that the change in the amount of foreign investment comes from the external policy of the opening of high speed railway.After replacing the foreign investment indicators,the results are still significant,once again verifying that the opening of the high speed railway significantly promotes the level of foreign investment in multiple dimensions.

关 键 词：高速铁路 基础设施 外商投资 双重差分模型 

分 类 号：U2-9[交通运输工程—道路与铁道工程] F752[经济管理—国际贸易]