2000), among the four soils tested herein, those strictly classified as erodible
materials, according to their respective percentage of fines, plasticity index and Pi [s.
These areas have highly erodible
soil consisting of loam, silt loam and sandy loam.
The route included in the SER crosses fewer miles of threatened and endangered species habitat, fewer streams and rivers and considerably fewer miles of severely wind erodible
For the world as a whole, converting 10% of cropland that is highly erodible
to grass or trees seems like a reasonable goal.
Recently excavated mounds remain erodible
until the first rains or heavy frost hardens the surface into a physical, raindrop-impacted crust.
where farmers were required to implement a soil conservation plan on erodible
cropland to be eligible for commodity price supports, the no-till area went from 7,000,000 hectares in 1990 to 25,000,000 in 2004.
Payment was made to limit production of specific commodities, but there was no requirement that the land be erodible
The USLE and RUSLE are fundamental equations used to categorize land as erodible
, which has significant regulatory implications for land use and management.
The reductions in areas under these crops have occurred because of a combination of competition for land from products with rising demand, such as fruit and vegetables; land degradation from overexploitation; government programs to divert erodible
land to pastures and tree crops; and displacement of land through urbanization and infrastructure development.
For those who may not be up to speed on CRP, it's a federal program begun in 1985 to compensate farmers willing to set aside--as in not farm--their highly erodible
cropland for 10- or 15-year periods.
Participating landowners agree not to convert their land to non-agricultural uses and to develop and implement a conservation plan for any highly erodible
Among them are the Conservation Reserve Program, which pays farmers to leave highly erodible
and other sensitive lands fallow, and the Wetlands Reserve Program, which helps farmers restore wetlands and fines those who destroy them.