Limited effect of urban tree vegetation on NO2 and O3 concentrations

Grundström, M., & Pleijel, H. (2014). Limited effect of urban tree vegetation on NO2 and O3 concentrations near a traffic route. Environmental Pollution, 189, 73–76. doi:10.1016/j.envpol.2014.02.026

Platform: Gothenburg

Publication type: Scientific article (peer-reviewed)

Projects: Valuation of ecosystem services provided by urban greenery

DOI Title: Limited effect of urban tree vegetation on NO2 and O3 concentrations near a traffic route

Journal: Environmental Pollution

ISSN/ISBN: 0269-7491

DOI: 10.1016/j.envpol.2014.02.026

Author(s): Maria Grundström Håkan Pleijel

Published year: 2014

Subject: Toxicology Pollution Health, Toxicology and Mutagenesis General Medicine

Tags: Air quality Nitrogen dioxide Ozone Urban vegetation

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Abstract

Concentrations of NO₂ and O₃ were measured inside and outside a dense broad-leaved forest canopy adjacent to a busy traffic route in the City of Gothenburg, Sweden, with duplicate passive diffusion samplers during six one-week periods starting well before leaf senescence and ending when leaves were largely senescent. Concentrations of NO₂ were lower inside the forest canopy during all periods (representing a significant effect, p = 0.016), on average by 7% or 2.7 μg m⁻³. O₃ showed a more variable response with an average non-significant effect of 2% lower in the forest stand. There was no systematic trend of the difference in concentrations inside and outside the forest stand of the pollutants with the progression of autumn leaf senescence. Our study indicates that the effect of urban vegetation on air pollution concentrations is small, although it seems to exist for NO₂ in a traffic polluted environment.

Limited effect of urban tree vegetation on NO2 and O3 concentrations

Abstract

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