Title: Vegetation Inventory for OMBIL Author: g5epxkgp Created Date: 5/14/2009 10:44:31 AM The U.S. Geological Survey (USGS), in partnership with several federal agencies, has developed and released four National Land Cover Database (NLCD) products over the past two decades: NLCD 1992, 2001, 2006, and 2011. NLCD, clipped to show just the county, with the shapefile TIGER overlaid, for 1992, 2001, 2006, and 2011. Legend Differences Changes that were made in three NLCD 2001 legend definitions contributed to incompatibilities between the two land cover products for developed, agricultural, and barren classes. Convert JavaScripts to Python¶. *To view and print the PDF you must obtain and install the Acrobat® Reader, available at no charge from Adobe Systems. NLCD 2016 offers 7 integrated epochs of land cover for years 2001, 2003, 2006, 2008, 2011, 2013, and 2016. (2001 legend). Use 7zip or another compression program to open these files. See Legend. The 2001, 2006, and 2011 NLCD products on the MRLC website are the most recent version and replace all earlier editions of these data. Choose NLCD 2016, zoom into your study site, and compare to NLCD 2001. For the NLCD 2001 Alaska land cover classification, the overall thematic accuracy was 83.9 percent at Anderson Level I and 76.2 percent at Anderson Level II (Selkowitz and Stehman, 2011). NLCD data are public domain, and may be freely downloaded from the MRLC website. 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 NLCD 2001 products." The primary source data were bands 3, 4, 5, and 7 (visible red, near-infrared, mid-infrared, and thermal infrared) of cloud-free Landsat TM scenes acquired during the spring and fall (when trees are mostly bare of leaves) of 1992. 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. Download the NLCD2001 land cover classification legend. Lower 48 possible fire data - NASA Server. Download the NLCD2001 land cover classification legend. NLCD 2016 represents the latest evolution of NLCD land cover products focused on providing innovative land cover and land cover change data for the Nation. These products provide spatially explicit and reliable information on the Nation’s land cover and land cover change. (2016 legend). The performance of the developed strategies and methods were tested in twenty World Reference System-2 path/row throughout the conterminous U.S. An overall agreement ranging from 71% to 97% between land cover classification and reference data was achieved for all tested area and all years. Developed classes were modeled in 2001 using an imperviousness layer threshold. Download the per pixel estimates of percent imperviousness legend. 4. The Multi-Resolution Land Characteristics Consortium has supported the development of two national digital land cover products: the National Land Cover Dataset (NLCD) 1992 and National Land Cover Database (NLCD) 2001. Continue the three-page report for this lesson by responding to the following questions: The NLCD 2001 metadata includes a table of value to RGB conversions. NLCD 1992/2001 Retrofit Land Cover Change Product Developments in mapping methodology, new sources of input data, and changes in the mapping legend for the 2001 National Land Cover Database (NLCD2001) will confound any direct comparison between NLCD2001 and National Land Cover Dataset 1992 (NLCD1992). (Note: Zooming Out Required) Toggle The Sun: NLCD 2011 is the most up-to-date iteration of the National Land Cover Database, the definitive Landsat-based, 30-meter resolution land cover database for the Nation. Download Land Cover Data. NLCD has also produced forest canopy density (1% increments) for 2001 and 2011. Nationwide coverage, including Alaska, Hawaii, and Puerto Rico. The National Land Cover Database (NLCD): NLCD is a land cover monitoring database, providing generalized land cover (16 classes) and impervious cover (1% increments) for the U.S. for 2001, 2006, and 2011. NLCD 2001 Legend Land Cover Class Descriptions 1 No data value, Alaska zones only. Use of this dataset in studies needing generalized land cover information are advised to utilize newer versions of original input datasets (2005 NALCMS 2.0, NLCD), as methods of classification have improved, including the correction of NALCMS classification errors. You can simply copy and paste your GEE JavaScripts into a code block wrapped with trip quotes and pass it to a variable. The 2001 GAP class label was maintained if it matched the NLCD general land cover class. (2001 legend). Substantial differences in imagery, legends, and methods between these two land cover products must be overcome in order to support direct comparison. Comprehensive research was conducted and resulted in developed strategies for NLCD 2016: a streamlined process for assembling and preprocessing Landsat imagery and geospatial ancillary datasets; a multi-source integrated training data development and decision-tree based land cover classifications; a temporally, spectrally, and spatially integrated land cover change analysis strategy; a hierarchical theme-based post-classification and integration protocol for generating land cover and change products; a continuous fields biophysical parameters modeling method; and an automated scripted operational system for the NLCD 2016 production. These products update all previously released versions of landcover and impervious products for CONUS (NLCD 2001, NLCD 2006, NLCD 2011) and are not directly comparable to previous products. The classes are described in the metadata documents. 3DEP elevation, clipped to show just the county, with the TIGER file overlaid. Download the per pixel estimates of percent imperviousness legend. Continue the three-page report for this lesson by responding to the following questions: 30 meter raster, with cells classified into one of 21 land cover classes. "Land cover layer containing only those pixels identified as changed between NLCD 2001 Land Cover 2011 Edition and NLCD 2011 Land Cover products across the conterminous United States. National Land Cover Data (NLCD) - 2001: Legend For NLCD 2001: Toggle Layer: Lower 48 possible fire data - Backup NASA Sever. NLCD 2001 has an improved Anderson Level I class accuracy of 85.3 percent and an Anderson Level II class accuracy of 78.7 percent (Wickham and others, 2010). The 1992/2001 NLCD Land Cover Change Product was developed to offer a more accurate and useful guide to change analysis than can be provided by direct comparison of NLCD 1992 with NLCD 2001. National Land Cover Database 2001 (NLCD2001) Legend, Anderson Land Cover Classification System. From NLCD: The National Land Cover Database 2001 was produced through a cooperative project conducted by the Multi-Resolution Land Characteristics (MRLC) Consortium. A majority of NLCD 2001 updates occur in coastal mapping zones where NLCD 2001 was published prior to the National Oceanic and Atmospheric Administration (NOAA) Coastal Change Analysis Program (C-CAP) 2001 land cover products. Early testing suggested that NLCD for 2001 supported the best classification accuracy. (Source MODIS) Toggle Layer: Lower 48 weather radar data (Source NOAA). Toggle Layer: Global Topographic Maps (Source USGS and ESRI). 1. The data in NLCD 2011 are completely integrated with NLCD 2001 (2011 Edition) and NLCD 2006 (2011 Edition). To continue the legacy of NLCD and further establish a long-term monitoring capability for the Nation’s land resources, the USGS has designed a new generation of NLCD products named NLCD 2016. 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