한국농공학회지 (Magazine of the Korean Society of Agricultural Engineers)

한국농공학회 (The Korean Society of Agricultural Engineers)
권호 표지

Application of AGNPS Water Quality Computer Simulation Model to a Cattle Grazing Pasture

  • Jeon, Woo-Jeong (Rural Engineering, HanKyong National Univ.) ;
  • Parajuli, P. (Biosystems Engineering, Auburn Univ.,) ;
  • Yoo, K.-H. (Biosystems Engineering, Auburn Univ.)
  • 발행 : 2003.12.01
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초록

This research compared the observed and model predicted results that include; runoff, sediment yield, and nutrient losses from a 2.71 ha cattle grazing pasture field in North Alabama. Application of water quality computer simulation models can inexpensively and quickly assess the impact of pasture management practices on water quality. AGNPS single storm based model was applied to the three pasture species; Bermudagrass, fescue, and Ryegrass. While comparing model predicted results with observed data, it showed that model can reasonably predict the runoff, sediment yield and nutrient losses from the watershed. Over-prediction and under-prediction by the model occurred during very high and low rainfall events, respectively. The study concluded that AGNPS model can be reasonably applied to assess the impacts of pasture management practices and chicken litter application on water quality.

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