Air pollution removal by urban forests in Canada and its effect on air quality and human health |
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| Institution: | 1. USDA Forest Service, 5 Moon Library, SUNY-ESF, Syracuse, NY 13210 USA;2. The Davey Institute, 5 Moon Library, SUNY-ESF, Syracuse, NY 13210 USA;3. Environment and Climate Change Canada, National Wildlife Research Centre, Ottawa, ON K1S5B6 Canada;1. New York City Department of Parks and Recreation, Central Forestry, Horticulture, & Natural Resources, 1234 Fifth Avenue, New York, NY 10029, USA;2. New York City Department of Health and Mental Hygiene, Bureau of Environmental Surveillance and Policy, 125 Worth Street, CN34E, Room 326, New York, NY 10013, USA;3. New York City Department of Parks and Recreation, Central Forestry, Horticulture, & Natural Resources, Olmsted Center, Flushing Meadows Corona Park, Flushing, NY 11368, USA;1. University of Helsinki, Department of Environmental Sciences, P.O. Box 65, FI-00014, Finland;2. University of Helsinki, Department of Environmental Sciences, Niemenkatu 73, FI-15140 Lahti, Finland;1. ARGANS, Sophia Antipolis, France;2. Hokkaido Research Centre, Forestry and Forest Products Research Institute, Sapporo, Japan;3. Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan;4. Lithuanian Research Centre for Agriculture and Forestry, Institute of Forestry, Girionys, Lithuania;5. Consiglio Nazionale Delle Ricerche, Sesto Fiorentino, Italy;6. Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Rome, Italy |
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| Abstract: | 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. |
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| Keywords: | Air pollution removal Air quality Ecosystem services Human mortality Urban forests |
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