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Contributed Talk

Session: : Urban Ecosystems 6

COS 138-2 - Comparisons of PM2.5 mitigation between evergreen Korean pine plantation and deciduous broad-leaved forest with stand characteristics in peri-urban region of Seoul metropolitan area, Republic of Korea

Tuesday, August 8, 2023
3:45 PM – 4:00 PM PDT
Location: E146

    Presenting Author(s)

  • JH

    Jeonghyun Hong

    Seoul National University, Republic of Korea

    • Coauthor(s)

  • ML

    Minsu Lee

    Seoul National University, Republic of Korea

  • WH

    Woojin Huh

    Seoul National University, Seoul-t'ukpyolsi, Republic of Korea

  • TK

    Tae Kyung Kim

    Seoul Nationl University
    Seoul, Republic of Korea

  • JJ

    Jihyeon Jeon

    Seoul National University, Seoul-t'ukpyolsi, Republic of Korea

  • HL

    Hojin Lee

    Seoul National University, Seoul-t'ukpyolsi, Republic of Korea

  • SB

    Siyeon Byeon

    Seoul National University, Seoul-t'ukpyolsi, Republic of Korea

  • KK

    Kunhyo Kim

    Seoul National University
    Seoul, Republic of Korea

  • CP

    Chanoh Park

    Seoul National University, Seoul-t'ukpyolsi, Republic of Korea

  • HK

    Hyun Seok Kim

    Professor
    Seoul National University, Republic of Korea

Abstract: Owing to industrialization and urbanization, fine particulate matter(PM2.5) in the atmosphere is emerging as one of major environmental problems worldwide. Accordingly, the importance of forests, which purify the air, is increasing. But there is a lack of understanding on long-term forest management for the maximization of PM2.5 mitigation. Therefore, in this study, we quantified the PM2.5 reduction efficiency(PMRE) by comparing seasonal PM2.5 concentration inside the forest with outside the forest for one year. In addition, the PMRE of two different forest types were compared and their relationship with stand characteristics after forest density control was analyzed. The results showed that the average PMRE inside the forest was about 18.2% for one year, and the monthly PMRE of forest was the highest in December(about 32.0%) and the lowest in June(about 7.7%). The average PMRE of TDF(Taehwa Deciduous broad-leaved Forest)(about 18.8%) was significantly higher than that of TCF(Taehwa Coniferous Forest)(about 17.5%)(p < 0.001) and the differences showed a seasonality. The reduction of PM2.5 was higher at TCF in spring and summer(p < 0.001), while it was higher at TDF in autumn and winter(p < 0.001). The relationship between the PMRE and the stand characteristics showed a negative correlation with the stand density(p = 0.003), and a positive correlation with the average diameter at breast height(DBH)(p = 0.028) in TDF. However, the PMRE of TCF had no significant correlation with stand characteristics. In conclusions, our findings revealed the differences in PM2.5 mitigation with stand characteristics which should be considered for the management of urban forests.