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<p>Identifying key targets for air pollution prevention and control while achieving synergy between pollution reduction and carbon mitigation is crucial for maximizing benefits to human health and the climate. To evaluate recent ambient air quality trends in Shenyang, this study analyzed atmospheric pollutant concentration data from 2020 to 2024, with a focus on two primary pollutants: fine particulate matter (PM<sub>2.5</sub>) and ozone (O<sub>3</sub>). The Positive Matrix Factorization (PMF) model was employed to identify the emission sources of PM<sub>2.5</sub> and carbon dioxide (CO<sub>2</sub>), as well as their common contributing sources. The results show that in recent years, the overall ambient air quality in Shenyang has improved, while ozone pollution has intensified. Particulate matter (PM) remains the dominant factor contributing to air quality deterioration. Among northern Chinese cities, coal-related emission sources continue to be the main contributors to PM<sub>2.5</sub>. From the perspective of synergistic governance, coal combustion, vehicle exhaust emissions, industrial activities, and biomass burning all have significant impacts on the concentrations of both PM<sub>2.5</sub> and CO<sub>2</sub>. Notably, vehicle exhaust emissions exert a substantial influence across all seasons throughout the year. These findings provide a scientific basis for Shenyang to implement targeted pollution control measures and address the complex challenge of air pollution.</p>

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Improvement of ambient air quality and the synergistic governance of CO2 and pollutant emissions in Shenyang

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年5月13日

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  • Huan Zhao,
  • Nan Wang,
  • Min Liu,
  • Jiahong Liu,
  • Xuebin Sun,
  • Shuxin Wang,
  • Zhe Li,
  • Dongqing Jin,
  • Jiayin Wang,
  • Mumu Gao

摘要

Identifying key targets for air pollution prevention and control while achieving synergy between pollution reduction and carbon mitigation is crucial for maximizing benefits to human health and the climate. To evaluate recent ambient air quality trends in Shenyang, this study analyzed atmospheric pollutant concentration data from 2020 to 2024, with a focus on two primary pollutants: fine particulate matter (PM2.5) and ozone (O3). The Positive Matrix Factorization (PMF) model was employed to identify the emission sources of PM2.5 and carbon dioxide (CO2), as well as their common contributing sources. The results show that in recent years, the overall ambient air quality in Shenyang has improved, while ozone pollution has intensified. Particulate matter (PM) remains the dominant factor contributing to air quality deterioration. Among northern Chinese cities, coal-related emission sources continue to be the main contributors to PM2.5. From the perspective of synergistic governance, coal combustion, vehicle exhaust emissions, industrial activities, and biomass burning all have significant impacts on the concentrations of both PM2.5 and CO2. Notably, vehicle exhaust emissions exert a substantial influence across all seasons throughout the year. These findings provide a scientific basis for Shenyang to implement targeted pollution control measures and address the complex challenge of air pollution.