异质型借用规模视角下高铁开通对城市创新水平的影响

摘要创新是经济结构转型与高质量发展的驱动力,交通基础设施建设对其具有重要支撑作用。基于2007—2018年长三角地区41个地级及以上城市面板数据,运用多时点双重差分模型,分析了异质型借用规模视角下高铁开通对城市创新水平的影响。研究发现:第一,高铁开通显著提高了城市创新水平,从时间维度看,高铁开通前期创新提升效应较低而后期红利爆发;从空间维度看,高铁开通提高了大城市创新水平,对小城市创新水平的提升作用不显著。第二,高铁开通后,其与绩效规模借用的交互作用抑制了城市创新水平的提升,与功能规模借用的交互作用促进了城市创新水平的提升。第三,对于大城市而言,高铁开通与绩效规模借用、功能规模借用的交互作用均提高了城市创新水平;对于小城市而言,高铁开通与绩效规模借用的交互作用对城市创新水平的影响不显著,高铁开通与功能规模借用的交互作用提高了城市创新水平。

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关键词：高铁开通创新水平绩效规模借用功能规模借用多时点双重差分模型

Abstract： Innovation is the driving force of economic structure transformation and high-quality development, and transportation infrastructure construction plays an important supporting role in it. Based on the panel data of 41 cities at prefecture level and above in the Yangtze River Delta in 2007 and 2018, this paper uses the time-varying DID model to analyze the impact of the opening of high-speed rail on the level of urban innovation from the perspective of heterogeneous borrowing scale. First, the opening of high-speed rail has significantly improved the level of urban innovation. From the spatial dimension, the opening of high-speed rail has improved the innovation level of big cities, but it has no significant effect on the innovation level of small cities. Second, after the opening of the high-speed railway, its interaction with borrowed-performance inhibits the innovation level of the city, and its interaction with borrowed-function promotes the improvement of the innovation level of the city. Third, for large cities, the interaction between high-speed rail opening and borrowed-performance and borrowed-function has improved the urban innovation level. For small cities, the interaction between high-speed rail opening and borrowed-performance has no significant impact on the urbaninnovation level. The interaction between high-speed rail opening and borrowed-function has improved the urban innovation level.

Keywords： High-speed Rail Opening Innovation Level Borrowed-performance Borrowed-function Time-varying DID model

收稿日期 2021-08-03; 接受日期 ;

基金资助:国家社会科学基金项目(19BJL051);安徽高校研究生科学研究项目(YJS20210005);合肥市2022年度省市领导圈定课题(SQKT202205)

通讯作者 张安伟(1996— ),男,山东日照人,博士研究生,主要从事区域经济与空间经济研究。

作者简介: 胡艳(1964— ),女,安徽合肥人,教授,博士生导师,主要从事区域经济、城市发展与都市圈经济研究。

引用本文:

胡艳, 张安伟.异质型借用规模视角下高铁开通对城市创新水平的影响[J]. 经济经纬, 2022,6: 3-13

HU Yan, ZHANG Anwei.The Impact of the Opening of High-speed Rail on the Level of Urban Innovation from the Perspective of Heterogeneous Borrowing Size[J] Economic Survey, 2022,V39(6): 3-13

链接本文:

http://www.jjjw.org.cn/CN/ 或 http://www.jjjw.org.cn/CN/Y2022/V39/I6/3

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