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<p>Administrative division adjustments serve as crucial policy tools for spatial governance, significantly impacting regional resource allocation, economic development, and administrative governance. However, the impact of administrative division adjustment policies (ADAPs) on air quality is often overlooked. Can these policies improve air quality? By what mechanisms do they achieve this? To address this research gap, in this study, we used a two-way fixed-effects difference-in-differences model to analyze panel data from 192 prefecture-level cities in China from 2000 to 2021 in an effort to examine the effects of China’s ADAPs on haze pollution, utilizing actual implementation as empirical evidence. We analyzed the impact mechanisms from the perspectives of regional industrial structure transformation, technological innovation, and governmental regulatory capacity. We found that first, the implementation of China’s ADAPs significantly improved urban haze pollution, with varying effects observed across different types of policies. Second, ADAPs promote the upgrading of the industrial structure, technological innovation, and the enhancement of governmental regulatory capacity, thereby ameliorating urban haze pollution in China. Third, the influence of ADAPs on urban haze pollution exhibits significant spatial heterogeneity, with differing outcomes observed in regions of varying development levels. Therefore, achieving the dual goals of spatial optimization and environmental improvement necessitates the flexible application of ADAPs tailored to regional realities.</p>

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How does administrative division adjustment policy affect urban air pollution? Mechanism analysis and empirical test

  • 期刊论文

  • 发表日期：

    2025年10月15日

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  • Xueqin Lin,
  • Qiaojun Han,
  • Jianquan Cheng

摘要

Administrative division adjustments serve as crucial policy tools for spatial governance, significantly impacting regional resource allocation, economic development, and administrative governance. However, the impact of administrative division adjustment policies (ADAPs) on air quality is often overlooked. Can these policies improve air quality? By what mechanisms do they achieve this? To address this research gap, in this study, we used a two-way fixed-effects difference-in-differences model to analyze panel data from 192 prefecture-level cities in China from 2000 to 2021 in an effort to examine the effects of China’s ADAPs on haze pollution, utilizing actual implementation as empirical evidence. We analyzed the impact mechanisms from the perspectives of regional industrial structure transformation, technological innovation, and governmental regulatory capacity. We found that first, the implementation of China’s ADAPs significantly improved urban haze pollution, with varying effects observed across different types of policies. Second, ADAPs promote the upgrading of the industrial structure, technological innovation, and the enhancement of governmental regulatory capacity, thereby ameliorating urban haze pollution in China. Third, the influence of ADAPs on urban haze pollution exhibits significant spatial heterogeneity, with differing outcomes observed in regions of varying development levels. Therefore, achieving the dual goals of spatial optimization and environmental improvement necessitates the flexible application of ADAPs tailored to regional realities.