Digital technology has injected new power into China's economic development,and the high-quality urban development driven by the digital economy is inseparable from the support of digital infrastructure.Based on the panel data of 263 cities at prefecture level and above from 2002 to 2020,this paper discusses the influence of digital infrastructure development level on the dynamic change of urban spatial structure,the site selection heterogeneity of enterprises in different industries and its influencing factors from the dimensions of central population density,population density gradient and multi-center index.The findings indicate that:1)The enhancement of digital infrastructure leads to a rise in population density in central urban areas.This manifests as intensified population density near the central business district(CBD),while the rate of population density decline with distance is accelerated,suggesting that the expansion of digital infrastructure brings a stronger cohesion force to city centers,making these areas denser.2)Although the core area is more compact,cities are developing towards multi-centricity,demonstrating the growth and spread of emerging sub-centers.3)Subways,as an efficient and convenient public transportation method,have facilitated dispersion to a certain extent,but this has not fundamentally altered the overall trend of aggregation towards city centers.Cities should develop policies tailored to local conditions to alleviate pressure in central areas and promote the coordinated development of all urban regions.
关键词
数字基础设施/交通基础设施/城市空间结构/人口密度/多中心/集聚与分散/地铁
Key words
digital infrastructure/transportation infrastructure/urban spatial structure/population density/polycentric/agglomeration and dispersion/subway
维普
万方数据