Journal of East China Normal University(Natural Science) ›› 2021, Vol. 2021 ›› Issue (3): 128-137.doi: 10.3969/j.issn.1000-5641.2021.03.013

• Ecological and Environmental Sciences • Previous Articles     Next Articles

Relationship between air pollution purification and forest belt width of the Shanghai green belt in the summer season

Xiaoling WANG1(), Kun SONG1, Ying LE2, Jing CHEN2, Hao JIANG2, Yongjia ZHANG2, Heyi GONG1, Zifei WANG1, Yi DING1, Tianhui SHI1, Liangjun DA1,*()   

  1. 1. School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
    2. Shanghai Public Green Space Construction Affairs Center, Shanghai 201199, China
  • Received:2020-05-29 Online:2021-05-25 Published:2021-05-26
  • Contact: Liangjun DA;


In this study, ground-level air pollutants (i.e., particulate matter (PM), NO2, and CO) were monitored at two transects of an urban-road-green-belt of Shanghai for one month during the summer season. Four monitoring sites at 100m intervals were set along each transect from the road to the inside. The air pollution was evaluated for each site based on China’s national standard, and the variation in air pollution purification ability (i.e., removal percentage) was compared among sites with different distances to the road. The effects of meteorological condition and pollution background on maximum removal percentage of each air pollutant were evaluated by multiple regression analysis. The results showed that the green belt greatly contributed to reducing PM2.5, PM10, and NO2; however, the green belt also produced a cumulative effect on CO generation within its boundaries. The green belt had the greatest air pollution purification performance at sites with 300m distance to the road for most pollutants in both transects. The maximum removal percentages of PM2.5 and PM10 were correlated to air humidity difference and air temperature difference between outer and inner of forests mostly, while the maximum removal percentages of NO2 were correlated to the pollution background and maximum removal percentages of CO were correlated to air temperature difference. The results can provide a theoretical foundation for forest transform and arrangement aimed at air pollution purification in the green belt.

Key words: Shanghai green belt, air pollution, forest belt width, urban forest, ecological benefits

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