Analysis Products on Cropland
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下载链接：
https://cmr.earthdata.nasa.gov/search/concepts/C1214608814-SCIOPS.html
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资源简介：
The maps using data from the preliminary 1997 NRI for croplands deal with a variety of areas. These areas range from specific cultivated croplands, to erosion on cropland and changes in cropland. Also available to the user is data from 1992 and earlier. The general listing of maps created from this data are the following -
General Cropland Maps
Maps on Cropland Erosion and Conservation
Maps on Erosion for Specific Crops
Maps on Irrigated Cropland
Maps Showing Trends in Cropland Use
Maps on Specific Crops
Crop Maps from the Census of Agriculture
Tables
More Cropland maps and tables are available from the National Agricultural Statistics Service, http://www.nass.usda.gov/
In general -
When you click on an individual map, chart, or table on the subject index pages, you will get --
An "Explanation of Analysis," information that is essential to proper interpretation of the map. If you use our analysis products, please be aware of our disclaimer.
A link to a downloadable Postscript file you can use to print a map. A link to the related state summary table.
A link to the data file used to make the map. Data files are in pipe-delimited ASCII text format. The data file can be used with our GIS coverages to recreate the maps found on this site. Summary tables and data files are not available for all maps.
提供机构：
SCIOPS
