Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Dynamic Runoff of Non-point Sources Pollutants from Agricultural Areas

농촌지역에서 유출시간에 따른 비점오염물질의 유출평가

  • 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)
  • Received : 2008.09.17
  • Accepted : 2008.10.21
  • Published : 2008.11.30
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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

Acknowledgement

Supported by : 환경부

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