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http://dx.doi.org/10.3741/JKWRA.2018.51.6.535

Simulation of sediment reduction effects of VFS in uplands of Saemangeum watershed  

Lee, Seul Gi (Department of Agricultural Civil Engineering, Institute of Agricultural Science & Technology, Kyungpook National University)
Jang, Jeong Ryeol (Rural Research Institute, Korea Rural Community Corporation)
Choi, Kyung Sook (Department of Agricultural Civil Engineering, Institute of Agricultural Science & Technology, Kyungpook National University)
Publication Information
Journal of Korea Water Resources Association / v.51, no.6, 2018 , pp. 535-542 More about this Journal
Abstract
The study was intended to simulate the sediment reduction effects of the Vegetative Filter Strip (VFS) in uplands of Saemangeum watershed through VFSMOD-W model application. The model was calibrated by using the field data and the simulation scenarios were designed based on the investigation of uplands characteristics in Saemangeum watershed. The simulation scenarios were considered various size and slope of uplands including 1 ha, 5 ha, 10 ha of field size with width-length ratio of 1 : 1 having 7% and 15% of slopes under the daily rainfall of 50 mm, 100 mm, 150 mm, and 200 mm in order to mimic the different fields conditions. The effluent reduction ranged from 2.9~13.5% and 2.9~12.1% for runoff, and 33.8~97.0% and 27.1~85.9% for sediment under the field's slope of 7% and 15%, respectively. The VFS reduction effects showed different degree of influence from field size, slope, rainfall amounts. Based on the simulated results, the sediment contributing non-point source pollution expected to be reduced in the condition of VFS constructed 10% of fields in outlet of less than 10 ha of uplands having less than 15% of the slope.
Keywords
VFS; Sediment; VFSMOD-W; Uplands; Saemangeum;
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Times Cited By KSCI : 5  (Citation Analysis)
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