Accessibility navigation


Evaluating the effectiveness of urban hedges as air pollution barriers: importance of sampling method, species characteristics and site location

Blanusa, T., Qadir, Z. J., Kaur, A., Hadley, J. and Gush, M. B. (2020) Evaluating the effectiveness of urban hedges as air pollution barriers: importance of sampling method, species characteristics and site location. Environments, 7 (10). 81. ISSN 2076-3298

[img]
Preview
Text (Open access) - Published Version
· Available under License Creative Commons Attribution.
· Please see our End User Agreement before downloading.

2MB
[img] Text - Accepted Version
· Restricted to Repository staff only

1MB

It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing.

To link to this item DOI: 10.3390/environments7100081

Abstract/Summary

Urban hedgerows can act as barriers to roadside particulate air pollution but details on methodologies to quantify pollutant capture, most efficient species to use and practical planning advice are still evolving. We aimed to compare three widely-used approaches to quantify particulate accumulation and deposition, and ascertain the most cost-effective and robust approach for rapid screening of various types of hedges. Secondly, using the most efficient methodology, we screened the summertime deposition of particulates on roadside hedges in Reading (UK), not just on species with differing leaf surface characteristics, but also along a transect of the hedge depth. Finally we also compared particles’ capture by hedge leaf surfaces in locations with different traffic intensities, to try and ascertain the extent of reduction of particles’ concentration in various hedge types and urban locations. Results suggest that the gravimetric determination of particulate capture was most rapid and cost-effective, while being least technically demanding. We confirmed that hairy and more complex leaves captured most particulates particularly in > 10 micro m range. However, species choice only had a significant impact on the extent of capture on major roads, where the pollutant concentrations were highest. Furthermore, only hedge depths in excess of 2 m were found to noticeably reduce the concentration of fine particles in species with less capacity for particulates’ capture. Findings complement the growing body of knowledge to guide urban and landscape planners in choosing the most appropriate species to mitigate air quality in various urban contexts.

Item Type:Article
Refereed:Yes
Divisions:Interdisciplinary centres and themes > Chemical Analysis Facility (CAF)
Interdisciplinary centres and themes > Chemical Analysis Facility (CAF) > Electron Microscopy Laboratory (CAF)
Faculty of Life Sciences > School of Agriculture, Policy and Development > Biodiversity, Crops and Agroecosystems Division > Crops Research Group
ID Code:93221
Publisher:MDPI

Downloads

Downloads per month over past year

University Staff: Request a correction | Centaur Editors: Update this record

Page navigation