期刊
ENVIRONMENTAL POLLUTION
卷 183, 期 -, 页码 123-132出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2012.09.015
关键词
Biomonitoring; Urban air pollution; SIRM; PM; London plane (Platanus x acerifolia Willd.)
资金
- Flemish Agency for Innovation by Science and Technology [IWT-SBO-080019]
Recently, biomagnetic monitoring of tree leaves has proven to be a good estimator for ambient particulate concentration. This paper investigates the usefulness of biomagnetic leaf monitoring of crown deposited particles to assess the spatial PM distribution inside individual tree crowns and an urban street canyon in Ghent (Belgium). Results demonstrate that biomagnetic monitoring can be used to assess spatial PM variations, even within single tree crowns. SIRM values decrease exponentially with height and azimuthal effects are obtained for wind exposed sides of the street canyon. Edge and canyon trees seem to be exposed differently. As far as we know, this study is the first to present biomagnetic monitoring results of different trees within a single street canyon. The results not only give valuable insights into the spatial distribution of particulate matter inside tree crowns and a street canyon, but also offer a great potential as validation tool for air quality modelling. (C) 2012 Elsevier Ltd. All rights reserved.
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