SWAT Application for Conservation Effects Assessment in the Southeastern Coastal Plain
2005 Tampa, FL July 17-20, 2005(2005)
摘要
The Soil Water Assessment Tool (SWAT) was used to examine the impacts of alternate land
management practices on water quantity and quality within a Coastal Plain Watershed. Runoff, sediment, and
pesticide loadings were examined. SWAT simulations indicate a linear decrease in sediment and pesticide
yields will be observed if conservation tillage is implemented on the cotton acreage within this watershed. For
sediment, a 20% reduction in loss can be obtained through implementation of conservation tillage on 15% of
the watershed area. SWAT simulations indicated that a 45% reduction in the simulated pesticides can be
expected when the conservation practices are implemented on the same acreage. However, the model did
simulate an increase in water yields from the watershed when these practices were implemented, likely due to
increases in infiltration in the uplands. This increase in infiltration and subsequently streamflow could result in
greater losses of soluble chemicals, nitrate in particular.
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关键词
conservation effects assessment,southeastern coastal plain
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