It could be correlated with similar maps for 1987 and 1992 for trend analysis. This map displays areas where corn production makes up varying proportions of total cultivated cropland. It may not be appropriate for identifying, even on a national basis, the amount of corn grown. NRI maps reflect national patterns rather than site- specific information. Noncultivated cropland includes permanent hayland and horticultural cropland.
Land cover is the vegetation or other kind of material that covers the land surface.
Includes all land and water areas where the ownership is by private, municipal, county or parish, state, Indian tribal, individual trust, the Tennessee Valley Authority, or areas under temporary control of a Federal, state, county or municipal agency or government for foreclosure or nonpayment of taxes. Please include the Product ID you are inquiring about. If you use our analysis products, please be aware of our disclaimer .