Evaluation of non-point source pollution reduction by applying Best
Management Practices using a SWAT model and QuickBird
high resolution satellite imagery |
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Authors: | MiSeon Lee GeunAe Park MinJi Park JongYoon Park JiWan Lee and SeongJoon Kim |
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Institution: | 1. Department of Rural Engineering, Konkuk University, Seoul 143-701, South Korea 2. Department of Civil and Environmental System Engineering, Konkuk University, Seoul 143-701, South Korea |
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Abstract: | This study evaluated the reduction e ect of non-point source pollution by applying best management practices (BMPs) to a 1.21 km2
small agricultural watershed using a SWAT (Soil andWater Assessment Tool) model. Two meter QuickBird land use data were prepared
for the watershed. The SWAT was calibrated and validated using daily streamflow and monthly water quality (total phosphorus (TP),
total nitrogen (TN), and suspended solids (SS)) records from 1999 to 2000 and from 2001 to 2002. The average Nash and Sutcli e
model e ciency was 0.63 for the streamflow and the coe cients of determination were 0.88, 0.72, and 0.68 for SS, TN, and TP,
respectively. Four BMP scenarios viz. the application of vegetation filter strip and riparian bu er system, the regulation of Universal
Soil Loss Equation P factor, and the fertilizing control amount for crops were applied and analyzed. |
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Keywords: | QuickBird land use Soil and Water Assessment Tool best management practice non-point source |
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