Atmospheric particulate matter retention capacity of bark and leaves of urban tree species

Urban vegetation can effectively filter and adsorb particulate matter (PM). However, limited studies have been conducted on the PM retention capacity of tree barks. This study investigated the ability of five common urban tree species in the Yangtze River Delta region to retain PM through their bark...

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Veröffentlicht in:Environmental pollution (1987) 2024-02, Vol.342, p.123109-123109, Article 123109
Hauptverfasser: Wang, Manli, Qin, Man, Xu, Peiji, Huang, Dongming, Jin, Xinjie, Chen, Jian, Dong, Dubin, Ren, Yuan
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container_end_page 123109
container_issue
container_start_page 123109
container_title Environmental pollution (1987)
container_volume 342
creator Wang, Manli
Qin, Man
Xu, Peiji
Huang, Dongming
Jin, Xinjie
Chen, Jian
Dong, Dubin
Ren, Yuan
description Urban vegetation can effectively filter and adsorb particulate matter (PM). However, limited studies have been conducted on the PM retention capacity of tree barks. This study investigated the ability of five common urban tree species in the Yangtze River Delta region to retain PM through their barks and leaves by conducting a 14-day tree PM retention experiment on the five tree species during autumn and winter. The results showed that (1) the PM retention per unit area of bark was 6.9 times and 11.8 times higher than that of leaves during autumn and winter, respectively; (2) when considering total surface area, bark and leaves exhibited comparable PM retention capacities at the whole-plant scale; (3) the ability of bark to retain PM is species-specific, which can be attributed to different bark morphology among different tree species; and (4) bark and leaves exhibited distinct preferences for retaining PM of different particle sizes, even when exposed to similar environmental conditions. This study highlights the remarkable ability of tree bark to PM removal and provides valuable insights into the role of urban trees in mitigating PM pollution. Furthermore, these findings can provide valuable insights into studies on dry deposition modelling, urban planning, and green space management strategies. [Display omitted] •The PM retention per unit surface area of bark was found to be significantly higher than that of leaves.•At the whole-plant scale, bark and leaves have comparable PM retention capacities.•Both the ability of bark and leaves to retain PM exhibit a high degree of species specificity.•Bark and leaves exhibited distinct preferences for retaining PM of different particle sizes.
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However, limited studies have been conducted on the PM retention capacity of tree barks. This study investigated the ability of five common urban tree species in the Yangtze River Delta region to retain PM through their barks and leaves by conducting a 14-day tree PM retention experiment on the five tree species during autumn and winter. The results showed that (1) the PM retention per unit area of bark was 6.9 times and 11.8 times higher than that of leaves during autumn and winter, respectively; (2) when considering total surface area, bark and leaves exhibited comparable PM retention capacities at the whole-plant scale; (3) the ability of bark to retain PM is species-specific, which can be attributed to different bark morphology among different tree species; and (4) bark and leaves exhibited distinct preferences for retaining PM of different particle sizes, even when exposed to similar environmental conditions. This study highlights the remarkable ability of tree bark to PM removal and provides valuable insights into the role of urban trees in mitigating PM pollution. Furthermore, these findings can provide valuable insights into studies on dry deposition modelling, urban planning, and green space management strategies. [Display omitted] •The PM retention per unit surface area of bark was found to be significantly higher than that of leaves.•At the whole-plant scale, bark and leaves have comparable PM retention capacities.•Both the ability of bark and leaves to retain PM exhibit a high degree of species specificity.•Bark and leaves exhibited distinct preferences for retaining PM of different particle sizes.</description><identifier>ISSN: 0269-7491</identifier><identifier>EISSN: 1873-6424</identifier><identifier>DOI: 10.1016/j.envpol.2023.123109</identifier><identifier>PMID: 38086509</identifier><language>eng</language><publisher>England: Elsevier Ltd</publisher><subject>Air quality modelling ; dry deposition ; Ecosystem service ; Green infrastructure ; Particle sizes ; Urban green space</subject><ispartof>Environmental pollution (1987), 2024-02, Vol.342, p.123109-123109, Article 123109</ispartof><rights>2023 Elsevier Ltd</rights><rights>Copyright © 2023 Elsevier Ltd. 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However, limited studies have been conducted on the PM retention capacity of tree barks. This study investigated the ability of five common urban tree species in the Yangtze River Delta region to retain PM through their barks and leaves by conducting a 14-day tree PM retention experiment on the five tree species during autumn and winter. The results showed that (1) the PM retention per unit area of bark was 6.9 times and 11.8 times higher than that of leaves during autumn and winter, respectively; (2) when considering total surface area, bark and leaves exhibited comparable PM retention capacities at the whole-plant scale; (3) the ability of bark to retain PM is species-specific, which can be attributed to different bark morphology among different tree species; and (4) bark and leaves exhibited distinct preferences for retaining PM of different particle sizes, even when exposed to similar environmental conditions. This study highlights the remarkable ability of tree bark to PM removal and provides valuable insights into the role of urban trees in mitigating PM pollution. Furthermore, these findings can provide valuable insights into studies on dry deposition modelling, urban planning, and green space management strategies. 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source ScienceDirect Journals (5 years ago - present)
subjects Air quality modelling
dry deposition
Ecosystem service
Green infrastructure
Particle sizes
Urban green space
title Atmospheric particulate matter retention capacity of bark and leaves of urban tree species
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