数字经济发展对长三角区域一体化的影响

Research on the Impact of the Development of the Digital Economy on the Regional Integration of the Yangtze River Delta Region

发展数字经济与推动长三角一体化陆续成为了国家战略,将两项政策进行合理的衔接关系到新发展格局的构建。本文以长三角城市群为样本,在使用百度迁徙大数据测算区域一体化水平的基础上,将一体化分解为中心城市驱动与非中心城市驱动,分析了数字经济与区域一体化的关系。得到的结论为:(1)不考虑外溢效应,地区发展数字经济显著地促进了本地区融入长三角区域中,推进了区域一体化;(2)考虑外溢效应,地区发展数字经济会阻碍其他地区融入长三角区域中,产生效率的损失;(3)区域一体化本质是在地区间构建高质量的网络连接,构建过程存在星形网络和随机网络两种模式。政策的效率损失主要体现在非中心城市之间所构建的随机网络上,而非中心城市和中心城市之间所构建的星形网络产生了政策叠加的放大效果。因此,在发展数字经济的过程中,需要充分利用数字经济的连接功能,实现边缘地区与中心地区的高质量连接,更有效率地推进长三角区域一体化。

The development of digital economy and the promotion of market integration have successively become national policies.The reasonable integration of these two policies is related to the construction of the new development pattern.Based on the dataset of Yangtze River Delta cities,this article uses Baidu Migration big data to measure the level of regional market integration,decomposes the integration into central city driving and non-central city driving,and analyzes the relationship between digital economy and market integration.The conclusions are as follows:(1)Without considering the spillover effects,the development of digital economy in the region has significantly promoted the integration of the region with the Yangtze River Delta region and promoted regional integration.(2)Considering the spillover effect,the development of digital economy in one region will hinder other regions from integrating into the Yangtze River Delta region,resulting in a loss of efficiency.(3)The essence of regional integration is to build high-quality network connections between regions,and the construction process involves two modes:star network and random network.The efficiency loss of policies is mainly reflected in the random network built between non-central cities,while the star network built between non-central cities and central cities creates an amplifying effect of policy superposition.Therefore,in the process of developing the digital economy,it is necessary to fully utilize the connectivity function of the digital economy,achieve high-quality connectivity between peripheral and central regions,and more efficiently promote the integration of the Yangtze River Delta region.