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Dynamic Runoff of Non-point Sources Pollutants from Agricultural Areas  

Yi, Qitao (Department of Environmental Engineering, Hanseo University)
Hur, Chinhyu (Department of Chemistry Education, Chonbuk National University)
Kim, Youngchul (Department of Environmental Engineering, Hanseo University)
Publication Information
Journal of Korean Society on Water Environment / v.24, no.6, 2008 , pp. 773-783 More about this Journal
Abstract
In this paper, data collected from 22 different rural watersheds during stormflow conditions were analyzed. Those watersheds consisted of forest and cultivated land. EMC data analysis indicates that as agricultural land use increases, EMC values of TSS, COD and TN clearly tends to increase, but TP does not show a significant increase. Pattern of the pollutographs mostly has a similarity in hydrograph shape except nitrogen which inherently shows a variability and complication. The fraction of soluble reactive-P to TP increases as cultivated land use increases while mobile-nitrogen portion was higher in the runoff from forested watersheds than agricultural areas. During stormflow, pollutograph of the nitrogen was determined mainly by change in Particle-TKN as other pollutants but its effect is thought to be masked by decrease of dissolved form of nitrogen due to the dilution.
Keywords
EMC; Mobile nitrogen; Pollutographs; Rural watersheds; Soluble reactive-P;
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Times Cited By KSCI : 2  (Citation Analysis)
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