Sub Layers:
Name: 2006-2009 Generalized Cropland Data Layer
Display Field:
Type: Group Layer
Geometry Type: null
Description: These Layers are derived from the USDA NASS Cropland Data Layer (CDL). Each year's CDL was generalized using a zonal majority at the field level based on 2006 USDA common land unit (CLU) boundaries.
From the National Agricultural Statistics Service (NASS) website: "The Cropland Data Layer (CDL) contains crop specific digital data layers, suitable for use in geographic information systems (GIS) applications. The CDL Program annually focuses on producing digital categorized geo-referenced output products using imagery from the Resourcesat-1 AWiFS and the Landsat 5 TM satellites. See the Indian Government's National Remote Sensing Agency handbook for the Resourcesat-1 satellite. The CDL Program represents a cooperative venture between three USDA Agencies (Headquarters units of NASS, the Foreign Agriculture Service IPA group and the Farm Service Agency/Aerial Photography Field Office) plus in-state agreements between NASS Field Offices and their respective state government or university partners. Currently there are numerous historical research reports with more detailed information on NASS's general uses of remote sensing and GIS."
More at: http://www.nass.usda.gov/research/Cropland/SARS1a.htm
From the Farm Service Agency (FSA) website: "A Common Land Unit (CLU) is the smallest unit of land that has a permanent, contiguous boundary, a common land cover and land management, a common owner and a common producer in agricultural land associated with USDA farm programs. CLU boundaries are delineated from relatively permanent features such as fence lines, roads, and/or waterways."
More at: http://www.fsa.usda.gov/FSA/apfoapp?area=home&subject=prod&topic=clu
Copyright Text: Dana Peterson/Kansas Biological Survey; United States Department of Agriculture (USDA)
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