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作者

来源

URBAN FORESTRY & URBAN GREENING,Vol.29,P.40-48

语言

英文

关键字

Air pollution removal; Air quality; Ecosystem services; Human mortality; Urban forests; DRY DEPOSITION; OZONE; VEGETATION; TREES; HYDROCARBONS; POLLUTANTS; MORTALITY; BENEFITS; IMPACT; CITIES

作者单位

[Nowak, David J.] SUNY ESF, USDA, US Forest Serv, 5 Moon Lib, Syracuse, NY 13210 USA. [Hirabayashi, Satoshi] SUNY ESF, Davey Inst, 5 Moon Lib, Syracuse, NY 13210 USA. [Doyle, Marlene; McGovern, Mark; Pasher, Jon] Environm & Climate Change Canada, Natl Wildlife Res Ctr, Ottawa, ON K1S 5B6, Canada. Nowak, DJ (reprint author), SUNY ESF, USDA, US Forest Serv, 5 Moon Lib, Syracuse, NY 13210 USA. E-Mail: dnowak@fs.fed.us

摘要

Urban trees perform a number of ecosystem services including air pollution removal, carbon sequestration, cooling air temperatures and providing aesthetic beauty to the urban landscape. Trees remove air pollution by intercepting particulate matter on plant surfaces and absorbing gaseous pollutants through the leaf stomata. Computer simulations with local environmental data reveal that trees in 86 Canadian cities removed 16,500 tonnes (t) of air pollution in 2010 (range: 7500-21,100 t), with human health effects valued at 227.2 million Canadian dollars (range: $52.5-402.6 million). Annual pollution removal varied among cities and ranged up to 1740 t in Vancouver, British Columbia. Overall health impacts included the avoidance of 30 incidences of human mortality (range: 7-54) and 22,000 incidences of acute respiratory symptoms (range: 7900-31,100) across these cities.