National Land Cover Database (NLCD)
National Land Cover Database 2006 (NLCD2006)
National Land Cover Database 2006 (NLCD2006) is a 16-class land cover classification scheme that has been applied consistently across the conterminous United States at a spatial resolution of 30 meters. NLCD2006 is based primarily on the unsupervised classification of Landsat Enhanced Thematic Mapper+ (ETM+) circa 2006 satellite data. NLCD2006 also quantifies land cover change between the years 2001 to 2006. The NLCD2006 land cover change product was generated by comparing spectral characteristics of Landsat imagery between 2001 and 2006, on an individual path/row basis, using protocols to identify and label change based on the trajectory from NLCD2001 products. It represents the first time this type of 30 meter resolution land cover change product has been produced for the conterminous United States. A formal accuracy assessment of the NLCD2006 land cover change product is planned for 2011.
Preferred NLCD2006 citation: Fry, J., Xian, G., Jin, S., Dewitz, J., Homer, C., Yang, L., Barnes, C., Herold, N., and Wickham, J., 2011. Completion of the 2006 National Land Cover Database for the Conterminous United States, PE&RS, Vol. 77(9):858-864.
Other MRLC Program Publications for NLCD2006
Wickham, J.D., Stehman, S.V., Gass, L., Dewitz, J., Fry, J.A., and Wade, T.G. 2013. Accuracy assessment of NLCD 2006 land cover and impervious surface, Remote Sensing of Environment, Vol. 130, pp. 294-304.
Xian, G., Homer, C.G., Bunde, B., Danielson, P., Dewitz, J.A., Fry, J.A., and Pu, R., 2012, Quantifying urban land cover change between 2001 and 2006 in the Gulf of Mexico region: Geocarto International, v. 27, no. 6, p. 479-497.
Xian, G., Homer, C., Dewitz, J., Fry, J., Hossain, N., and Wickham, J., 2011. The change of impervious surface area between 2001 and 2006 in the conterminous United States. Photogrammetric Engineering and Remote Sensing, Vol. 77(8): 758-762.
Xian, G, Homer, C, and Fry, J. 2009. Updating the 2001 National Land Cover Database land cover classification to 2006 by using Landsat imagery change detection methods. Remote Sensing of Environment, Vol. 113, No. 6. pp. 1133-1147.
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