Quantifying the potential contribution of urban trees to particulate matters removal: A study in Chattogram city, Bangladesh


We have very limited understanding of the contribution of urban trees toward removal of air pollutants, for example, particulate matter (PM) in Bangladesh. Institute of Forestry and Environmental Sciences aimed to quantify the atmospheric PM and deposition of PM by urban trees in Chattogram City Corporation (CCC), Bangladesh. Roadsides, with lower relative greenspace, are found to have a 56% higher concentration of atmospheric PM compared to the residential, park, and commercial areas, with relatively higher greenspaces. Deposition of PM on leaves depends on quantity and sources, tree leaf attributes, weather conditions, and wind speed. In the winter season, when rainfall is limited, the concentration of PM is usually high. Trees with oblong and ovate-shaped, and rough-surfaced leaves at lower height can accumulate higher amounts of PM, and therefore, a recommendation is made to plant trees with these attributes in urban areas.

Read the whole article: https://doi.org/10.1016/j.jclepro.2022.135015

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