Remote Sensing of Environment, 114, 1676-1686. developed, cropland, wetland – as well as offering information on tree canopy cover, impervious urban surfaces, a roads and energy development layer, and grass/shrub coverage layers for the Western U.S. Yang, L., Jin, S., Danielson, P., Homer, C., Gass, L., Case, A., Costello, C., Dewitz, J., Fry, J., Funk, M., Grannemann, B., Rigge, M. and G. Xian. These areas most commonly include single-family housing units. No new imperviousness products for Alaska, Hawaii and Puerto Rico are available from NLCD 2016. The polygon does not appear to be a “sealed” surface, and therefore its classification as impervious in the reference data could be debated. Urban classes were excluded, as they are derived from a separate product, the impervious estimation. U.S. Geological Survey. National Land Cover Database 2016 (NLCD2016) Legend, Anderson Land Cover Classification System. Impervious surfaces account for 80 to100 percent of the total cover. Percent Canopy Density, Percent Impervious Surface (Salt Lake and Mesa sites) – Impervious surface layers (currently provided at nominal 5-year intervals) provide information valuable for hydrologic applications, for example. These areas most commonly include large-lot single-family housing units, parks, golf courses, and vegetation planted in developed settings for recreation, erosion control, or aesthetic purposes. Included in NLCD2016. Developed classes in these years are directly derived from and updated following the impervious surface cycle. The dead plant material proportion in each 30m pixel. Included in images NLCD2001, NLCD2006, NLCD2011, and NLCD2016. Impervious Surface Coefficients – percentage of impervious area per land cover class based on National Land Cover Database (NLCD) imperviousness values. bare ground, litter, sagebrush, big sagebrush and annual herbaceous, along Primary road outside urban area : interstates and other major roads. Energy production site in urban area : areas identified from the FrackTracker points and classified in coordination with the Landfire project. The NLCD consistently quantifies the percent anthropogenic TIA for the NLCD at a 30-meter … Impervious surfaces account for less than 20% of total cover. Examples include apartment complexes, row houses and commercial/industrial. The 1992 Sedge/herbaceous: Alaska only areas dominated by sedges and forbs, generally greater than 80% of total vegetation. urban classes and on a decision-tree classification for the rest. NLCD 2006 percent developed impervious pixels, identified as changed, were extracted to NLCD developed class codes using NLCD 2001 legend thresholds for developed classes and added to the change pixel map. Generally, vegetation accounts for less than 15% of total cover. (MRLC) Consortium, a partnership of federal agencies led by the … NLCD 2016 products include 20 classes of land cover for Alaska, as well as a separate product that defines impervious surfaces in urban areas (usually composed of concrete, asphalt, stone, and metal — widely recognized as a key indicator of environmental quality in urban areas). These areas are not subject to intensive management such as tilling, but can be utilized for grazing. Defines which impervious layer pixels are roads and provides the best fit description for impervious pixels that are not roads. No masking of obvious non-tree areas is performed for this product. Secondary road outside urban area : non-interstate highways. 1992 data are primarily based on unsupervised classification of Landsat data, Download the per pixel estimates of percent tree canopy legend. High intensity: highly developed areas where people reside or work in high.... 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