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Dynamic Changes of Air Particle Pollutants and Scale Regulation of Forest Landscape in a Typical High-Latitude City

Author

Listed:
  • Chang Zhai

    (College of Landscape Architecture, Changchun University, Changchun 130022, China
    These authors contributed equally to this work.)

  • Ning Fang

    (College of Landscape Architecture, Changchun University, Changchun 130022, China
    These authors contributed equally to this work.)

  • Xuan Xu

    (College of Landscape Architecture, Changchun University, Changchun 130022, China)

  • Bingyan Liu

    (College of Landscape Architecture, Changchun University, Changchun 130022, China)

  • Guangdao Bao

    (Institute of Forest Management, Jilin Provincial Academy of Forestry Sciences, Changchun 130033, China)

  • Zhibin Ren

    (Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China)

  • Ruoxuan Geng

    (College of Landscape Architecture, Changchun University, Changchun 130022, China
    Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China)

Abstract

Particulate pollutants, particularly PM 2.5 and PM 10 , pose serious threats to human health and environmental quality. Therefore, effectively mitigating and reducing the concentrations of these pollutants is crucial for human survival and development. In this study, we analyzed the distribution characteristics of air particulate pollutants in a typical high-latitude city, extracted urban forest areas from high-resolution remote sensing images, and examined the changing characteristics of PM concentration and the relationship between landscape pattern indexes and PM at different scales. The results showed that the concentrations of PM 2.5 and PM 10 were highest in winter and lowest in summer. At the small scales of 0.5 km × 0.5 km to 1.5 km × 1.5 km, PM concentration decreased with the decrease in PARA (Perimeter–Area Ratio). At the mesoscales of 2 km × 2 km to 2.5 km × 2.5 km, both PARA and CIRCLE (Related Circumscribing Circle) were highly significant ( p < 0.001) correlated with PM concentration. At the large scales of 3 km × 3 km to 4 km × 4 km, PARA and PAFRAC (Perimeter–Area Fractal Dimension) were positively correlated with PM concentration. Our study indicates that reducing the complexity of forest patches in small-scale planning can help mitigate particulate air pollution. In the medium scale of urban forest planning, the more regular the forest patch shape and the more similar the patch shape to the strip, the better PM can be alleviated, while in large-scale planning, increasing the forest area and making the patches more normalized and simplified can reduce PM concentration. Moreover, reducing the complexity of forest patches can significantly mitigate PM pollution at all scales. The results of this research provide theoretical support and guidance for improving air quality in urban forest planning at different scales.

Suggested Citation

  • Chang Zhai & Ning Fang & Xuan Xu & Bingyan Liu & Guangdao Bao & Zhibin Ren & Ruoxuan Geng, 2024. "Dynamic Changes of Air Particle Pollutants and Scale Regulation of Forest Landscape in a Typical High-Latitude City," Land, MDPI, vol. 13(11), pages 1-22, November.
    • Handle: RePEc:gam:jlands:v:13:y:2024:i:11:p:1947-:d:1523756
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    References listed on IDEAS

    as
    1. Xi Zhong & Kai Wei & Daimeng Shang, 2023. "An improved azimuth-dependent Holland model for typhoons along the Zhejiang coast prior to landfall based on WRF–ARW simulations," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 117(3), pages 2325-2346, July.
    2. Wei-Kang Zhang & Bing Wang & Xiang Niu, 2015. "Study on the Adsorption Capacities for Airborne Particulates of Landscape Plants in Different Polluted Regions in Beijing (China)," IJERPH, MDPI, vol. 12(8), pages 1-16, August.
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