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The Impact Assessment of Eco-Industrial Development on Air Pollution: Evidence from China’s National Eco-Industrial Demonstration Parks

Author

Listed:
  • Zhengai Dong

    (School of Law, Chongqing University, Chongqing 400045, China)

  • Kai Wang

    (School of Law, Chongqing University, Chongqing 400045, China)

  • Lichen Zhang

    (School of Law, Chongqing University, Chongqing 400045, China)

Abstract

Eco-industrial development not only reduces pollutant emissions but also effectively addresses ecological and environmental pressures. Using panel data for 276 Chinese cities from 2006 to 2021, this study employs a Difference-in-Differences model combined with the Propensity Score Matching method to empirically examine the impact of eco-industrial development on air pollution, taking China’s National Eco-Industrial Demonstration Parks as the empirical setting. The analysis further includes robustness tests, heterogeneity analyses, and mechanism examinations focusing on green innovation and green investment. The results show that: (1) the establishment of National Eco-industrial Demonstration Parks significantly reduces PM 2.5 emissions and improves environmental quality in host cities; (2) eco-industrial development mitigates air pollution by promoting green innovation and enhancing green investments; (3) the pollution reduction effect of eco-industrial development is more pronounced in central and western cities, industrial cities, open cities, and regions with lower levels of green development.

Suggested Citation

  • Zhengai Dong & Kai Wang & Lichen Zhang, 2026. "The Impact Assessment of Eco-Industrial Development on Air Pollution: Evidence from China’s National Eco-Industrial Demonstration Parks," Sustainability, MDPI, vol. 18(7), pages 1-29, April.
    • Handle: RePEc:gam:jsusta:v:18:y:2026:i:7:p:3617-:d:1915104
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