Abstract
Soil erosion has both on-farm and off-farm impacts. Reduction ofsoil depth can impair the land's productivity, and the transportof sediments can degrade streams, lakes, and estuaries. Since1933, soil conservation policies have existed in the UnitedStates. Originally they focused on the on-farm benefits ofkeeping soil on the land and increasing net farm income.Beginning in the 1980s, however, policy goals increasinglyincluded reductions in off-site impacts of erosion. As aconsequence of conservation efforts associated with explicitU.S. government policies, total soil erosion between 1982 and1992 was reduced by 32% and the sheet and rill erosion ratefell from an average of 4.1 tons per acre per year in 1982 to 3.1 tons per acre in 1992. Wind erosion rate fell from anaverage of 3.3 tons per acre per year to 2.4 tons per acre peryear over the same period. Still, soil erosion is imposingsubstantial social costs. These costs are estimated to be about$37.6 billion annually. To further reduce soil erosion andthereby mitigate its social costs, there are a number of policyoptions available to induce farmers to adopt conservationpractices including education and technical assistance,financial assistance, research and development, land retirement,and regulation and taxes.
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Uri, N.D. A Note on Soil Erosion and Its Environmental Consequences in the United States. Water, Air, & Soil Pollution 129, 181–197 (2001). https://doi.org/10.1023/A:1010335031525
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DOI: https://doi.org/10.1023/A:1010335031525