Journal
ENVIRONMENTAL POLLUTION
Volume 159, Issue 8-9, Pages 2155-2163Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2011.03.009
Keywords
Air pollutants; Urban park; Urban vegetation; Crown volume coverage (CVC); Air quality
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Parks with various types of vegetations played an important role in ameliorating air quality in urban areas. However, the attenuation effect of urban vegetation on levels of air pollution was rarely been experimentally estimated. This study, using seasonal monitoring data of total suspended particles (TSP), sulfur dioxide (SO2) and nitrogen dioxide (NO2) from six parks in Pudong District, Shanghai, China, demonstrated vegetations in parks can remove large amount of airborne pollutants. In addition, crown volume coverage (CVC) was introduced to characterize vegetation conditions in parks and a mixed-effects model indicated that CVC and the pollution diffusion distance were key predictors influencing pollutants removal rate. Therefore, it could be estimated by regression analysis that in summer, urban vegetations in Pudong District could contribute to 9.1% of TSP removal, 5.3% of SO2 and 2.6% of NO2. The results could be considered for a better park planning and improving air quality. (C) 2011 Elsevier Ltd. All rights reserved.
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