Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
권호 표지

Seasonal Water Quality Analysis in Daecheong Lake by Eutrophication Assessment Methods

부영양화 평가 방법에 따른 계절별 대청호의 수질분석

  • Kim, Eungseok (Department of Civil Engineering, Sunmoon University) ;
  • Sim, Kuybum (Department of Civil Engineering, Sunmoon University) ;
  • Yang, Sangyong (Geum-River Environment Research Center) ;
  • Yoon, Johee (Geum-River Environment Research Center) ;
  • Kal, Byungseok (Department of Civil Engineering, Pusan National Univerrsity) ;
  • Son, InOok (Department of Civil Engineering, Yeungnam University) ;
  • Choi, Hyun Il (Department of Civil Engineering, Yeungnam University)
  • Published : 2012.11.30
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Abstract

This study has evaluated the trophic state in Daecheong Lake by Carlson (1977) method, Aizaki (1981) method, Yang and dickman (1993) method, and Korean trophic state index method. For estimating the trophic state index from each analysis method we use water quality factors such as COD, TN, TP, Chl-a, and SD provided by the water information system and the ministry of environment. The seasonal lake trophic state results denote the mesotrophic state lake from Carlson (1977) method, Aizaki (1981) method, and Korean trophic state index method and the high relation between Carlson (1977) method and Aizaki (1981) method with the coefficient of determination $R^2$ greater than 0.9 for all the seasons. Although Korean trophic index method has relatively weak relation to other methods with the coefficient of determination $R^2$ ranging from 0.419 to 0.701, we propose that Korean trophic index method is suitable for use in domestic lakes since Korean trophic index results show the similar periodicity and tendency with other method results. Hence, Korean trophic index method incorporating domestic lake characteristics is expected to can contribute to seasonal water quality management measures in lakes.

Keywords

References

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