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| 数字基础设施建设对城市经济韧性的影响 ——来自“宽带中国”战略试点的经验证据 |
| The impact of digital infrastructure development on the economic resilience of cities: empirical evidence from the |
| 投稿时间：2024-06-21 修订日期：2024-08-13 |
| DOI： |
| 中文关键词: 数字基础设施建设 城市经济韧性 “宽带中国”政策 双重差分模型 |
| English Keywords:digital infrastructure economic resilience |
| Fund Project: |
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| 中文摘要: |
| 建设韧性城市是实现高质量发展的必经之路。本文以“宽带中国”政策作为一项准自然实验,利用定基极差熵权法测算2010-2020年间284个城市的经济韧性水平,并以此为基础运用双重差分模型对数字基础设施建设与城市经济韧性的关系进行评估。研究发现：“宽带中国”政策的实施显著促进了城市经济韧性的提升,且政策具有推广和累积效应。机制检验表明,数字普惠金融覆盖面、城市创新水平、城市信息化水平是数字基础设施建设促进城市经济韧性提升的重要机制；异质性结果表明,在东部与中部地区、大规模城市和较高传统基础设施水平地区,数字基础设施建设对城市经济韧性的提升更加显著。此外,数字基础设施建设对周边地区经济韧性的提升具有正向的空间溢出效应。 |
| English Summary: |
| Building resilient cities is a necessary way to realize high-quality development. In this paper, we use the "Broadband China" policy as a quasi-natural experiment, measure the economic resilience level of 284 cities during 2010-2020 by using the fixed-base polar deviation entropy weighting method, and then use double-difference models to assess the relationship between the construction of digital infrastructure and the economic resilience of the cities on the basis of this method. The study finds that the implementation of the "Broadband China" policy significantly promotes the economic resilience of cities, and the policy has a generalization and cumulative effect. Mechanism tests show that the coverage of digital inclusive finance, the level of urban innovation, and the level of urban informatization are important mechanisms through which digital infrastructure construction contributes to the economic resilience of cities. Heterogeneity results show that the enhancement of urban economic resilience by digital infrastructure construction is more pronounced in the eastern and central regions, and in the areas of large-scale cities and higher levels of traditional infrastructures. In addition, digital infrastructure development has a positive spatial spillover effect on the economic resilience of neighboring regions. |
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