Assessing the US Urban Forest Resources
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Journal of Forestry. Vol. 99 no. 3.:p. 37-42. (2001)
Urban areas in the conterminous United States doubled in size between 1969 and 1994, and currently cover 3.5 percent of the total land area and contain more than 75 percent of the US population. Urban areas contain approximately 3.8 billion trees with an average tree canopy cover of 27 percent. The extent and variation of urban forests across the 48 states are explored to help build a better understanding of this significant national resource. Urbanization and urban forests are likely to be a significant focus of forestry in the 21st century.
Nowak, David J.; Noble, Mary H.; Sisinni, Susan M.; Dwyer, John F. 2001. Assessing the US Urban Forest Resources. Journal of Forestry. Vol. 99 no. 3.:p. 37-42. (2001)