1992 data are primarily based on unsupervised classification of Landsat data, while the rest of the images rely on the imperviousness data layer for the urban classes and on a decision-tree classification for the rest. The newest version of NLCD, released in 2019, provides land cover data for the following time periods; 2001, 2004, 2006, 2008, 2011, 2013, and 2016. short url for this page: https://go.usa.gov/xpXbJ. Version 1 and 2 overall accuracies were 82.0% and 83.0%, respectively, and the SE was 0.5%. The USGS began producing NLCD at interval of every five years since 2001. Conterminous United States (based on 2011 imagery) Download Alaska Land Cover * Download Hawaii Land Cover * The history of NLCD dates back to 1992. Example, I used the "Classify" to symbolize 8 different classes using its class code value but I don't find the option to keep the class … << Back to Land Cover Data Overview: Data and Tools. Now, there are NLCD 1992, 2001, 2006, 2011, and 2016 available. @ Stu Smith,Thanks ! 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. Download Land Cover Data. In this update the landcover footprint was extended along the northern coast to include the islands that were missed in previous versions, and several duplicate roads (offset by 1 or 2 pixels) were removed on the Aleutian Islands. Land Use Layers (NLCD 2016) for 2D RAS. 8. This update to the Alaska National Land Cover Database (NLCD) 2016 replaces the files dated 20200213. The documents include: (1) NLCD 2016 image selection and pre-processing, and NLCD 2016 land cover and change modeling and post-classification, (2) a line-by-line interpretation of each individual model, and (3) a dictionary that lists all files from model output, including file names and a description of each file. NLCD from 2001 to 2016 (Animation) NLCD – Summary. The USGS EROS Center is planning to release NLCD … NLCD (the National Land Cover Database) is a 30-m Landsat-based land cover database spanning 8 epochs (1992, 2001, 2004, 2006, 2008, 2011, 2013 and 2016). 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. Remote Sensing for Forest Cover Change Detection | 2016 1 Module 3: Introduction to QGIS and Land Cover Classification The main goals of this Module are to become familiar with QGIS, an open source GIS software; construct a single-date land cover map by classification of a cloud-free composite generated from Landsat images; That layer, updated to 2016, covers the entire continental US in the Albers projection. Use 7zip or another compression program to open these files. The problem I face with the Singleband pseudocolor is I can't set the unique class code for each land cover classes. r.external in = NLCD_2016_Land_Cover_L48_20190424.img out = NLCD_2016_Land_Cover_L48_20190424 title = "Land Cover 2016" Then use g.region to zoom to your area of interest and r.mapcalc to extract a subset These land use layers for each state are clipped from the National NLCD layer provided by the Multi-Resolution Land Characteristics Consortium (MRLC) here. The new classification methods developed for NLCD 2016 produced a quantifiable improvement in classification accuracy, with a small but significant increase in overall accuracy . Similarities, Interdependence While there are some key differences between the LCMAP and NLCD land cover products and associated technical approaches, there are also similarities and interdependencies. 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