Hedges reduce pollution at breathing height in shallow street canyons, study confirms

Hedges reduce pollution at breathing height in shallow street canyons, study confirms

Hedges reduce pollution at breathing height in shallow street canyons, study confirms An extensive field study into air quality along a road lined with buildings has confirmed that hedges can help mitigate traffic-related pollution up to 1.7m, reducing the pollutants breathed by pedestrians, young children and cyclists. The study, led by researchers at the University of Surrey's Global Centre for Clean Air Research (GCARE), put an extensive array of instruments in and around a hedge to measure the presence of various pollutants at numerous locations, identifying the effect of the hedge at different heights and distances from the road. This study builds a new understanding of the distribution of different air pollutants around a hedge in a shallow street canyon, where the width of the road is at least twice …
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