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Probability Distribution of BOD EMC from Paddy Fields

논 유출수 BOD의 유량가중평균농도(EMC) 확률분포

  • Jin, So-Hyun (Department of Rural & Bio-systems Engineering, Chonnam National University) ;
  • Jung, Jae-Woon (Rural Research Institute, Korea Rural Community & Agriculture Corporation) ;
  • Yoon, Kwang-Sik (Department of Rural & Bio-systems Engineering, Chonnam National University) ;
  • Choi, Woo-Jung (Department of Rural & Bio-systems Engineering, Chonnam National University) ;
  • Choi, Dong-Ho (Department of Rural & Bio-systems Engineering, Chonnam National University) ;
  • Kim, Sang-Don (Yeongsan River Environment Research Laboratory, National Institute of Environmental Research) ;
  • Kang, Jae-Hong (Yeongsan River Environment Research Laboratory, National Institute of Environmental Research) ;
  • Choi, Yu-Jin (Water Management Research Division, National Institute of Environment Research)
  • 진소현 (전남대학교 농업생명과학대학 지역.바이오시스템공학과) ;
  • 정재운 (농어촌공사 농어촌연구원) ;
  • 윤광식 (전남대학교 농업생명과학대학 지역.바이오시스템공학과) ;
  • 최우정 (전남대학교 농업생명과학대학 지역.바이오시스템공학과) ;
  • 최동호 (전남대학교 농업생명과학대학 지역.바이오시스템공학과) ;
  • 김상돈 (국립환경과학원 영산강물환경연구소) ;
  • 강재홍 (국립환경과학원 영산강물환경연구소) ;
  • 최유진 (국립환경과학원 수질총량관리센터)
  • Received : 2010.06.24
  • Accepted : 2010.09.10
  • Published : 2010.09.30

Abstract

Identification of probability distribution for water quality constituents from specific land use is important to achieve successful implementation of TMDL program. In this 3-year study, distribution of discharge and BOD(Biological Oxygen Demand) concentration from paddy rice fields were monitored. Four probability distributions, normal, log-normal, Gamma and Weibull were fitted and the goodness-of-fit was assessed using probability plots and Kolmogorov-Smirnov test. $EMC_s$ of BOD in runoff from paddy field ranged 0.37 to $7.99\;mgL^{-1}$, and all four probability distributions were acceptable. But the normal distribution would be preferred for BOD from paddy fields considering nature of straight forward application.

Keywords

BOD EMC;Probability distribution;Paddy fields

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