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- Dosskey, M.G.; Helmers, M.J.; Eisenhauer, D.E.
- Journal of soil and water conservation 2008 v.63 no.4 pp. 232
- watersheds; filter strips; simulation models; mathematical models; decision support systems; surface water; runoff; nonpoint source pollution; water quality; hydrologic models
Watershed planners need a tool for determining width of filter strips that is accurate enough for developing cost-effective site designs and easy enough to use for making quick determinations on a large number and variety of sites. This study employed the process-based Vegetative Filter Strip Model to evaluate the relationship between filter strip width and trapping efficiency for sediment and wa ...
- Gordon, L.M.; Bennett, S.J.; Alonso, C.V.; Bingner, R.L.
- Journal of soil and water conservation 2008 v.63 no.4 pp. 173
- gully erosion; soil erosion; agricultural land; agricultural watersheds; watershed hydrology; tillage; runoff; rain; soil properties; mathematical models; simulation models; Belgium; Mississippi; Iowa; Georgia
It is now recognized worldwide that soil erosion on agricultural fields due to ephemeral gullies may be greater than those losses attributed to sheet and rill erosion processes. Yet it is not known whether the common practice of repairing or obliterating these gullies during annual tillage activities exacerbates or mitigates soil losses over long time periods. Here, a numerical model is used to d ...