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Abstract
The role of a roadside buffer planting belt and road structure in controlling air pollutants was studied by determining the distribution of NO_2 in open fields and planting areas near roads of various structure. NO_2 concentration was found to decrease with distance from the road, but the reduction in planting sites was greater than in open fields. Roadside planting at a level road structure was found to reduce NO_2 concentration by 3.5 ppb at 10 m and by 2.3 ppb at 150 m from the road. Road structure influenced NO_2 concentration 5 m from the road ; the concentration decreased as height of the road noise barrier increased, and this effect was enhanced by the presence of a planting area at all structures except the bank road.
Journal
- Japanese Journal of Toxicology and Environmental Health [List of Volumes]
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Japanese Journal of Toxicology and Environmental Health 40(4), 328-337, 1994-08-31 [Table of Contents]
The Pharmaceutical Society of Japan
