2010 Illinois Cropland
Data Layer Information (CDL)
This 2010 Illinois Cropland
Data Layer Atlas was constructed from 2010 categorized
Resourcesat-1 AWiFS imagery courtesy of USDA Foreign
Agricultural Service, and Landsat 5 Thematic Mapper
and Landsat 7 Enhanced Thematic Mapper imagery. The
ground truth for this product utilized the Farm Service
Agency Common Land Unit for crops classes, and 2001
National Land Cover Dataset (NLCD) for non-agricultural
classes.
Ancillary data included: NLCD Impervious Surface,
NLCD Forest Canopy, National Elevation Dataset, and
Moderate Resolution Imagery Spectroradiometer (MODIS)
16 day Normalized Difference Vegetation Index (NDVI)
composite. The Cropland Data Layer (CDL) was produced
using Rulequest See5 and ERDAS Imagine.
The CDL of Illinois has been created annually since
crop year 1999 and this product makes temporal analysis
between years possible to determine such trends as
crop rotation, urban expansion and crop acreage variability.
The CDL Atlas was created using ArcGIS software from
the Environmental System Research Institute, with
each page containing a separate Illinois county.
To view the CDL Atlas, click on a
county on the map to the left, or select from the
list of Illinois counties below.
For more details, please visit:
http://nassgeodata.gmu.edu/CropScape
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