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Study on Spatio-Temporal Evolution Law and Driving Mechanism of PM 2.5 Concentration in Changsha–Zhuzhou–Xiangtan Urban Agglomeration

Author

Listed:
  • Wenhao Chen

    (School of Business, Central South University of Forestry and Technology, Changsha 410004, China)

  • Chang Zeng

    (School of Business, Central South University of Forestry and Technology, Changsha 410004, China)

  • Chuheng Ding

    (Bangor College China, Central South University of Forestry and Technology, Changsha 410004, China)

  • Yingfang Zhu

    (College of Science, Central South University of Forestry and Technology, Changsha 410004, China)

  • Yurong Sun

    (College of Science, Central South University of Forestry and Technology, Changsha 410004, China)

Abstract

Since the 21st century, China has made many explorations to alleviate the increasingly serious air pollution problem. This study analyses the spatio-temporal evolution characteristics and future development of PM 2.5 concentration in the Changsha–Zhuzhou–Xiangtan urban agglomeration from 2008 to 2019. In addition, the driving mechanism of spatial differentiation of PM 2.5 concentration in this urban agglomeration was also investigated. The results were as follows. Firstly, the PM 2.5 concentration showed a trend of gradual decline between 2008 and 2019. Secondly, the PM 2.5 concentration distribution was high in the northwest and low in the southeast. Thirdly, PM 2.5 concentration showed a strong spatial agglomeration. Fourth, except for some rural areas of Chaling County and Yanling County, the concentration of PM 2.5 in other areas was very likely to continue the past trend of gradual decline. Finally, natural and meteorological conditions played a leading role in the evolution of PM 2.5 concentration. The influence of socioeconomic factors is small now, but the trend is increasing. To improve air quality deeply, policymakers need to promote comprehensive control of regional air pollution by simultaneously reducing emissions and taking comprehensive treatment. They also need to strengthen supervision to prevent excessive pollution in some rural areas from worsening air quality in the surrounding areas.

Suggested Citation

  • Wenhao Chen & Chang Zeng & Chuheng Ding & Yingfang Zhu & Yurong Sun, 2022. "Study on Spatio-Temporal Evolution Law and Driving Mechanism of PM 2.5 Concentration in Changsha–Zhuzhou–Xiangtan Urban Agglomeration," Sustainability, MDPI, vol. 14(22), pages 1-18, November.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:22:p:14967-:d:970724
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    References listed on IDEAS

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