Abstract:

Digital infrastructure construction is an effective driving force for the high-quality development of urban and rural areas. Based on panel data from 20 prefecture-level cities (excluding Shenzhen) in Guangdong Province from 2011 to 2022, this study employs the entropy method and other techniques to analyze the spatiotemporal evolution of digital infrastructure and the level of urban-rural integrated development. By using benchmark regression and spatial Durbin models, the study examines the impact of digital infrastructure on urban-rural integrated development and its spatial effects. The results indicate: ① Both digital infrastructure and the level of urban-rural integrated development in various prefecture-level cities in Guangdong Province show an upward trend, with a clear spatial agglomeration characteristic, presenting an overall spatial distribution feature of "core spreading to the periphery"; ② Digital infrastructure has a significant promotional effect on urban-rural integrated development, with distinct spatial differences among regions, where the promotional effects are notably significant in the Pearl River Delta, Eastern Guangdong, and Northern Guangdong regions, while the promotional effect in Western Guangdong is not apparent; ③The construction of digital infrastructure in each prefecture-level city not only promotes the process of local urban-rural integrated development but also has a positive spatial spillover effect on the urban-rural integration of neighboring areas. Based on this, it is recommended to coordinate the balanced development of digital infrastructure, formulate differentiated support policies according to local conditions, make full use of spillover effects and the radiation and driving effect of large cities, strengthen regional technical cooperation and sharing, and promote in-depth urban-rural integrated development.

Key words: urban-rural integrated development, digital infrastructure, spatiotemporal characteristics, spatial effects, Guangdong Province

摘要：

数字基础设施建设是城乡高质量发展的重要推动力。本文基于2011—2022年广东省20个地级市（深圳市除外）的面板数据，采用熵值法等对数字基础设施和城乡融合发展水平进行时空演变分析，运用基准回归模型和空间杜宾模型分析数字基础设施对城乡融合发展的影响及其空间效应。结果表明：①广东省各地级市数字基础设施和城乡融合发展水平均呈现上升趋势，空间集聚特征明显，整体呈现出“核心向四周扩散”的空间分布特征；②数字基础设施对城乡融合发展具有显著的促进作用，且空间差异明显，其中对珠三角、粤东和粤北地区的促进作用显著，对粤西地区的促进作用较弱；③各地级市数字基础设施建设不仅能够加快本地城乡融合发展的进程，还对周边地区城乡融合产生正向的空间溢出效应。基于此，本文提出统筹推进数字基础设施均衡发展、因地制宜制定差异化扶持政策、充分利用数字基础设施的溢出效应和大城市的辐射带动作用、加强区域间技术合作与共享等政策建议。

关键词: 城乡融合发展, 数字基础设施, 时空特征, 空间效应, 广东省