数字经济、创新差距和中心-外围城市经济差距——基于新经济地理的视角  

Digital Economy,Innovation Gap and Center-Periphery Economic Gap:Perspective of New Economic Geography

作　　者：黄林秀[1] 郝坚 HUANG Lin-xiu;HAO Jian

机构地区：[1]西南大学经济与管理学院

出　　处：《改革》2024年第3期113-126,共14页Reform

基　　金：重庆市社会科学规划项目“西部地区以县城为重要载体的城镇化建设推进机制与路径研究”(2022NDZD06);西南大学研究阐释党的二十大精神专项项目“城乡融合发展推动共同富裕研究”(SWU2209012)。

摘　　要：采用新经济地理模型,基于数字经济的空间知识溢出效应,推演出数字经济对经济地理格局的重塑机制。该模型表明,数字经济通过改变城市创新差距,重塑了区域经济空间结构。利用2005—2022年我国237个地级市的面板数据,采用时间和区域双重固定效应模型进行实证检验。结果显示,数字经济有助于缩小外围城市与对应中心城市的经济差距。机制检验表明,数字经济显著降低了城市创新差距,从而有利于缩小中心-外围城市的经济差距。此外,异质性分析表明,与对应中心城市地理距离越远的外围城市,数字经济发展对缩小其与中心城市经济差距的作用越大。基于研究结论,提出外围城市应加快数字经济发展、建立健全区域数字基础设施无障碍分享机制、深化区域数字要素市场一体化改革等政策建议。Using the new economic geography model and based on the spatial knowledge spillover effect of the digital economy,the reshaping mechanism of the digital economy on the economic geography pattern was deduced.This model shows that the digital economy reshapes the regional economic spatial structure by changing the urban innovation gap.At the same time,using panel data of 237 prefecture-level cities in China from 2005 to 2022,a time and regional dual fixed effect model was used for empirical testing.The results show that the digital economy helps narrow the economic gap between peripheral cities and corresponding central cities.The mechanism test reveals that the digital economy significantly reduces the urban innovation gap,which is conducive to narrowing the economic gap between the center and peripheral cities.In addition,heterogeneity analysis shows that the greater the geographical distance between peripheral cities and the corresponding central city,the greater the role of digital economic development in narrowing the economic gap between them and the central city.Based on the research conclusions,policy recommendations are put forward such as accelerate the development of digital economy in peripheral cities,establish and improve the barrier-free sharing mechanism of regional digital infrastructure,and deepening the reform of regional digital factor market integration.

关 键 词：数字经济 空间知识溢出 创新差距 经济差距 

分 类 号：F207[经济管理—国民经济]