Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Application of Simple Regression Models for Pollutants Load Estimation of Paddy to Yeongsan and Seomjin River Watersheds

영산강.섬진강 유역을 대상으로 한 논 오염부하 산정 단순회귀모형 적용

  • 최우정 (전남대학교 농업과학기술연구소 생물산업공학과) ;
  • 곽진협 (전남대학교 농업과학기술연구소 생물산업공학과) ;
  • 정재운 (전남대학교 농업과학기술연구소 생물산업공학과) ;
  • 윤광식 (전남대학교 농업과학기술연구소 생물산업공학과) ;
  • 장남익 (국립환경과학원 영산강물환경연구소) ;
  • 허유정 (국립환경과학원 영산강물환경연구소)
  • Published : 2007.01.31
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Abstract

Simple regression models for pollutants load estimation of paddy developed by the Ministry of Environment in 1995 were tested with the data (T-N, T-P, $COD_{Mn}$, and SS) collected from Yeongsan and Seomjin river watersheds, and improvement measures were suggested. Overall, the simulated values showed a great difference from the measured values except for T-P according to the statistical analyses (RMSE, root mean square error; RMAE, root mean absolute error; RB, relative bias; EI, efficiency index). Such difference was assumed due to the fact that the models use only hydrologic factors (quantity factor) associated with precipitation and run-off as input parameters, but do not consider other factors which are likely to affect pollutant concentration (quality factor) including days after fertilization. In addition, in terms of accessibility of the models, some parameters in the models such as run-off depth and run-off amount which can not be obtained from the weather database but should be collected by on-site measurements need to be replaced with other variables.

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References

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