Publication Details
Oxygen production by urban trees in the United States
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Year Published
2007
Publication
Arboriculture & Urban Forestry. 33(3): 220-226.
Abstract
Urban forests in the coterminous United States are estimated to produce ≈61 million metric tons (67 million tons) of oxygen annually, enough oxygen to offset the annual oxygen consumption of approximately two-thirds of the U.S. opulation. Although oxygen production is often cited as a significant benefit of trees, this benefit is relatively insignificant and of negligible value as a result of the large oxygen content of the atmosphere. Other benefits of the urban forest are more critical to environmental quality and human health than oxygen production by urban trees.
Keywords
air quality; environmental quality; tree benefits; urban forestsCitation
Nowak, David J.; Hoehn, Robert; Crane, Daniel E. 2007. Oxygen production by urban trees in the United States. Arboriculture & Urban Forestry. 33(3): 220-226.