Effects of Urban Forest on Air Pollution in Hefei City
WU Ze-min, Joe R. McBride, David J. Nowak, YANG Jun, Sheauchi Cheng (Department of Forestry, Anhui Agricultural University,Hefei, PRC ; Forest Science Division, ESPM,University of California, Berkeley, USA;USDA Forest Service, Northeastern Research Station, c/o SUNY-ESF, Syracuse, NY, USA;USDAForest Service, Pacific Southwest Research Station, Albany, CA, USA)
Urban forest structure and its effect on air quality were assessed for downtown of Hefei city,the study area covers 23 km2. The area has 351,542 trees (25% tree cover), with Chinese Privet, Dawn Redwood, and Deodar Cedar are the most common species. Pollution removal by these trees in 1998 is estimated at 169 tons (32.3 g/m-2 tree cover) with a value of $785, 000 in Hefei,. Large individual trees (38.1 -45.7 cm dbh) are estimated to remove 2.76 kg of pollution per year with a value of $12. 84. Some common genera that have relatively low volatile organic compound emissions and therefore low ozone forming potential include Cinnamomum, Ligustrum, Lagerstroemia, Podocarpus and Prunus. The effects of current and future urban forest management to improve air quality in Chinese cities are discussed.
【CateGory Index】： X173