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Articles in Planting trees can improve air quality.

  • Trees increase oxygen production and reduce levels of smog, thereby improving air quality.

    SF Urban Forest Council 2005 Annual Report. Accessed at: HYPERLINK "http://www.sfenvironment.com/aboutus/openspaces/urbanforest/ufc2005_annual_report.doc" http://www.sfenvironment.com/aboutus/openspaces/urbanforest/ufc2005_annual_report.doc

  • A University of California study found that the cost of reducing CO2 by one pound is 0.3 to 1.3 cents for planting a tree; 2.5 cents per pound by increasing the energy efficiency of appliances, and 10 cents per pound to build more fuel-efficient cars. According to American Forests, an acre of trees uses about 2.6 tons of carbon dioxide per year.

    Alaska Dept. of Natural Resources. Division of Forestry. Trees and Forests Improve the Urban Environment. Available at HYPERLINK "http://www.dnr.state.ak.us/forestry/pdfs/Trees_improve_environ.pdf" http://www.dnr.state.ak.us/forestry/pdfs/Trees_improve_environ.pdf.