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Title: Evaluating the national land cover database tree canopy and impervious cover estimates across the conterminous United States: a comparison with photo-interpreted estimates
Author: Nowak, David J.; Greenfield, Eric J.
Source: Environmental Management. 46(3): 378-390.
Publication Series: Journal/Magazine Article (JRNL)
Description: The 2001 National Land Cover Database (NLCD) provides 30-m resolution estimates of percentage tree canopy and percentage impervious cover for the conterminous United States. Previous estimates that compared NLCD tree canopy and impervious cover estimates with photo-interpreted cover estimates within selected counties and places revealed that NLCD underestimates tree and impervious cover. Based on these previous results, a wall-to-wall comprehensive national analysis was conducted to determine if and how NLCD derived estimates of tree and impervious cover varies from photo-interpreted values across the conterminous United States.
Keywords: national cover maps, photo-interpretation, tree canopy cover, impervious cover
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Nowak, David J.; Greenfield, Eric J. 2010. Evaluating the national land cover database tree canopy and impervious cover estimates across the conterminous United States: a comparison with photo-interpreted estimates. Environmental Management. 46(3): 378-390.
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