Evaluation of the impacts of BMPs and tailwater recovery system on surface and groundwater using satellite imagery and SWAT reservoir function

摘要: Abstract For an agricultural watershed, best management practice (BMP) is a conservational way to prevent non-point source pollution and soil water loss. Three BMPs, including tail recovery pond, tillage, crop rotation, were evaluated in order demonstrate the impacts of BMPs on quality quantity. Satellite imagery was used estimate potential tailwater ponds this study. The Soil Water Assessment Tool (SWAT) applied evaluate BMPs. Results showed that use tillage reduced cumulative sediment, total nitrogen (TN), phosphorus (TP) yields. In rotation scenario analysis, it found sediment flow not sensitive management. corn-soybean had higher TN lower TP yields than those continuous corn scenario. Continuous soybean lowest low yields, which may because fertilization demands, greater yield, residue crop. Based SWAT model simulation results, can reduce yield improve groundwater storage.