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DOI10.1016/j.scitotenv.2013.08.001
Field assessment of the effects of roadside vegetation on near-road black carbon and particulate matter
Brantley, Halley L.1; Hagler, Gayle S. W.1; Deshmukh, Parikshit J.2; Baldauf, Richard W.1,3
发表日期2014-01-15
ISSN0048-9697
卷号468页码:120-129
英文摘要

One proposed method for reducing exposure to mobile source air pollution is the construction or preservation of vegetation barriers between major roads and nearby populations. This study combined stationary and mobile monitoring approaches to determine the effects of an existing, mixed-species tree stand on near-road black carbon (BC) and particulate matter concentrations. Results indicated that wind direction and time of day significantly affected pollutant concentrations behind the tree stand. Continuous sampling revealed reductions in BC behind the barrier, relative to a clearing, during downwind (12.4% lower) and parallel (7.8% lower) wind conditions, with maximum reductions of 22% during the late afternoon when winds were from the road. Particle counts in the fine and coarse particle size range (0.5-10 mu m aerodynamic diameter) did not show change. Mobile sampling revealed BC concentration attenuation, a result of the natural dilution and mixing that occur with transport from the road, was more gradual behind the vegetation barrier than in unobstructed areas. These findings suggest that a mature tree stand can modestly improve traffic-related air pollution in areas located adjacent to the road; however, the configuration of the tree stand can influence the likelihood and extent of pollutant reductions. Published by Elsevier B.V.


英文关键词Vegetation;Air quality;Near-road;Black carbon;Particulate matter;Mobile monitoring
语种英语
WOS记录号WOS:000331776000015
来源期刊SCIENCE OF THE TOTAL ENVIRONMENT
来源机构美国环保署
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/57054
作者单位1.US EPA, Off Res & Dev, Natl Risk Management Res Lab, Res Triangle Pk, NC 27711 USA;
2.ARCADIS US Inc, Res Triangle Pk, NC USA;
3.US EPA, Off Air & Radiat, Natl Vehicle & Fuel Emiss Lab, Ann Arbor, MI USA
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Brantley, Halley L.,Hagler, Gayle S. W.,Deshmukh, Parikshit J.,et al. Field assessment of the effects of roadside vegetation on near-road black carbon and particulate matter[J]. 美国环保署,2014,468:120-129.
APA Brantley, Halley L.,Hagler, Gayle S. W.,Deshmukh, Parikshit J.,&Baldauf, Richard W..(2014).Field assessment of the effects of roadside vegetation on near-road black carbon and particulate matter.SCIENCE OF THE TOTAL ENVIRONMENT,468,120-129.
MLA Brantley, Halley L.,et al."Field assessment of the effects of roadside vegetation on near-road black carbon and particulate matter".SCIENCE OF THE TOTAL ENVIRONMENT 468(2014):120-129.
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