Phosphorus Forms and Export from Four Sub-Watersheds in the Upper Eau Galle River Basin Exhibiting Differing Land-Use Practices

摘要

The purpose of this research was to quantify biologically labile and refractory phosphorus constituents, transformations, and export from four sub- watersheds in the Upper Eau Galle River basin exhibiting both differing percentages of land-use practice and differing spatial distribution of land uses within the watershed. Land-use practices included livestock containment areas, agricultural fields, grass hay or meadows, CRP, and woodlots. Information from this demonstration will be important in calibrating and improving watershed models to forecast the impacts of land-use practice and BMP's (Best Management Practices) on water quality in Corps receiving waters.