Abstract
AbstractLand use decisions, following expiration of Conservation Reserve Program (CRP) contracts, can be aided by Geographical Information System (GIS) analysis. We utilized a GIS to overlay maps of CRP tracts including wetlands, a surficial aquifer, lakes, rivers and other landscape features in a small watershed in eastern South Dakota. Attribute data including the percentage of highly erodible land, soil type, vegetation, and land capability class were also integrated with the maps. Lake County, South Dakota was used to test the GIS selection model. Criteria were developed for the selection of tracts suitable for various management goals including: protection of surface and groundwater resources, wildlife enhancement, and row-crop or grassland agriculture. The maximum percentage of tract hectares selected for each goal was 17 for groundwater protection, 22 for surface water protection, 18 for wildlife enhancement, 30 for rowcrop production, and 38 for pasture or rangeland. All CRP tracts were selected at least once. The GIS provides a mechanism for selecting CRP tracts to meet several management goals.
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