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A Plot Scale Experiment to Assess the NPS Reduction of Sediment Trap for Non-irrigated Cropland  

Park, Tae-Yang (Dept. of Agric. Engineering, Gyeongsang National Univ.)
Kim, Sung-Jae (Dept. of Agric. Engineering, Gyeongsang National Univ.)
Jang, Jeong-Ryeol (Korea Rural Research Institute)
Choi, Kang-Won (Korea Rural Research Institute)
Kim, Sang-Min (Dept. of Agricultural Engineering (Insti. of Agric. and Life Sci.) Gyeongsang National Univ.)
Publication Information
Journal of agriculture & life science / v.45, no.5, 2011 , pp. 97-103 More about this Journal
Abstract
The purpose of this study was to analyze the pollutant reduction effect for non-irrigated crop land by nonpoint source pollution control. For a field scale monitoring, 6 plots (5m width and 22m length) and 3 sediment traps were installed. At the outlet of each plot, the stage gauges were installed for runoff monitoring. For a rainfall monitoring, tipping bucket rain gage was installed within the experiment site. Through the artificial irrigation, runoff from the plots were monitored. The SS, TOC, T-N, T-P, COD, NTU of sampled water were analyzed by standard methods. The SS, TOC, T-N, T-P, COD, NTU concentration of initial runoff were 15.00, 1.54, 5.27, 0.07, 4.72, 0.45mg/L, respectively. Four hours later than the initial runoff, the concentration was changed to 1.00, 0.94, 4.06, 0.01, 0.60, 0.33 mg/L, respectively. As a result of artificial irrigation, three out of four sediment traps were filled with runoff water from the experimental plots. One sediment trap was not filled with runoff water because the artificial irrigation was not supplied for two experimental plots. The stage of sediment traps were gradually lowered. However, the water quality didn't showed a decrease trend as the stage went down because the suspended solid was not equally collected during the water sampling.
Keywords
Non-irrigated Cropland; Sediment Trap;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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