20230918
11145600
1.0
FALSE
ForestChange2019To2021_Albers_dissolved
002
Projected
GCS_WGS_1984
Linear Unit: Meter (1.000000)
WGS_1984_Albers
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20230918
10591600
20230918
15584000
150000000
5000
ISO19115_3
Esri ArcGIS 13.1.3.41833
ForestChange2019To2021_Albers_dissolved
Virginia and a portion of North Carolina that is within the Albemarle-Pamlico National Estuary Partnership (APNEP) management boundary, was extracted from the 2019 and 2021 National Land Cover Dataset (NLCD) layers for analysis and display in the Wetland Condition and Assessment Tool (WetCAT). Areas that changed from forested in 2019 to a different land cover type in 2021 are displayed in this layer.
<DIV STYLE="text-align:Left;"><P STYLE="font-size:16ptmargin:7 0 7 0;"><SPAN><SPAN>The U.S. Geological Survey (USGS), in partnership with several federal agencies, has now developed and released seven National Land Cover Database (NLCD) products: NLCD 1992, 2001, 2006, 2011, 2016, 2019, and 2021. Beginning with the 2016 release, land cover products were created for two-to-three-year intervals between 2001 and the most recent year. These products provide spatially explicit and reliable information on the Nation’s land cover and land cover change. NLCD continues to provide innovative, consistent, and robust methodologies for production of a multi-temporal land cover and land cover change database. NLCD 2021 adds an additional year to the map products produced for NLCD 2019, with a streamlined compositing process for assembling and preprocessing Landsat imagery and geospatial ancillary datasets; a temporally, spectrally, and spatially integrated land cover change analysis strategy; a theme-based post-classification protocol for generating land cover and change products; a continuous fields biophysical parameters modeling method; and a scripted operational system. The overall accuracy of the 2019 Level I land cover was 91%. Results from this study confirm the robustness of this comprehensive and highly automated procedure for NLCD 2021 operational mapping (see https://doi.org/10.1080/15481603.2023.2181143 for the latest accuracy assessment publication). Questions about the NLCD 2021 land cover product can be directed to the NLCD 2021 land cover mapping team at USGS EROS, Sioux Falls, SD (605) 594-6151 or mrlc@usgs.gov. See included spatial metadata for more details.</SPAN></SPAN></P><DIV><P><SPAN /></P></DIV></DIV>
U.S. Geological Survey
forest change
NLCD
Virginia
File Geodatabase Feature Class
dataset
0
Simple
FALSE
0
TRUE
FALSE
ForestChange2019To2021_Albers_dissolved
Feature Class
0
OBJECTID
OBJECTID
OID
4
0
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Shape
Shape
Geometry
0
0
0
Feature geometry.
Esri
Coordinates defining the features.
FromForest
FromForest
String
255
0
0
ToLandCover
ToLandCover
String
255
0
0
Shape_Length
Shape_Length
Double
8
0
0
Length of feature in internal units.
Esri
Positive real numbers that are automatically generated.
Shape_Area
Shape_Area
Double
8
0
0
Area of feature in internal units squared.
Esri
Positive real numbers that are automatically generated.
20230918