USGS Gap Analysis Project - Additional Data – Canopy Cover
Dates
Publication Date
2011-02-22
Start Date
1999-04-28
End Date
2004-07-26
Citation
USGS - Core Science Analytics, Synthesis, and Library - Gap Analysis Project, 20110222, USGS Gap Analysis Project - Additional Data – Canopy Cover: U.S. Geological Survey, https://doi.org/10.5066/F76D5RW8.
Summary
Some species respond to the amount of canopy cover within a habitat type. The Percent Canopy Cover dataset was derived from the National Land Cover Dataset. The canopy cover database was compiled from the National Land Cover Dataset, and classifies each pixel into 101 possible values (0% - 100%). The canopy density estimate applies to the forest classes only. For further information on Canopy Cover, see http://landcover.usgs.gov/pdf/canopy_density.pdf. This dataset is a continuous canopy cover percentage and covers the entire U.S. These raster data have a 30 m x 30 m cell resolution. This canopy cover data set is considered official foundational data for the GAP species modeling process. The data have been made available provisionally [...]
Summary
Some species respond to the amount of canopy cover within a habitat type. The Percent Canopy Cover dataset was derived from the National Land Cover Dataset. The canopy cover database was compiled from the National Land Cover Dataset, and classifies each pixel into 101 possible values (0% - 100%). The canopy density estimate applies to the forest classes only. For further information on Canopy Cover, see http://landcover.usgs.gov/pdf/canopy_density.pdf. This dataset is a continuous canopy cover percentage and covers the entire U.S. These raster data have a 30 m x 30 m cell resolution. This canopy cover data set is considered official foundational data for the GAP species modeling process. The data have been made available provisionally to enhance understanding and use of GAP species data. These data represent circa 2001 ground conditions.
Additional data, such as canopy cover, are used in the GAP species modeling process. Canopy cover density values identified as usable habitat for species are used with this canopy cover data to determine habitat suitability in a spatially explicit way.
