한국물환경학회지 (Journal of Korean Society on Water Environment)

  • 제22권5호
  • /
  • Pages.784-795
  • /
  • 2006
  • /
  • 2289-0971(pISSN)
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  • 2289-098X(eISSN)
한국물환경학회 (Korean Society on Water Environment)
권호 표지

돌말(Epilithic Diatom) 지수를 이용한 국내 주요 하천(금강, 영산강, 섬진강)의 생물학적 수질평가

Biological Assessment of Water Quality by Using Epilithic Diatoms in Major River Systems (Geum, Youngsan, Seomjin River), Korea

  • 황순진 (건국대학교 환경과학과) ;
  • 김난영 (건국대학교 환경과학과) ;
  • 원두희 ((주)생태조사단 부설 두희자연환경연구소) ;
  • 안광국 (충남대학교 생명과학부) ;
  • 이재관 (국립환경과학원 환경진단연구부) ;
  • 김창수 (국립환경과학원 환경진단연구부)
  • Hwang, Soon-Jin (Department Environmental Science, Konkuk University) ;
  • Kim, Nan-Young (Department Environmental Science, Konkuk University) ;
  • Won, Doo Hee (Doohee Institute of Ecological Research (DIER), Korea Ecosystem Service (KES), Inc.) ;
  • An, Kwang Kuk (School of Bioscience and Biotechnology, Chungnam National University) ;
  • Lee, Jae Kwan (National Institute of Environmental Research (NIER)) ;
  • Kim, Chang Soo (National Institute of Environmental Research (NIER))
  • 투고 : 2006.06.26
  • 심사 : 2006.08.16
  • 발행 : 2006.09.30
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초록

The purpose of this study was to assess biological river water quality by using epilithic diatoms at 40 selected sites in Geum, Youngsan, and Seomjin River systems. The sampling and analyses were performed during three seasons including January, April and June in 2005. Various water quality parameters also were analyzed. We attempted to classify the water quality condition by epilithic diatom indices (DAIpo and TDI) with the results of corresponding analyses of various chemical water quality parameters. A five class system was delivered to describe the water quality condition ranged from "very good" to "very poor." We also proposed a way of classifying water quality condition by combining two diatom indices of DAIpo and TDI. Our results showed that biomass of epilithic diatoms varied not only seasonally but spatially; it was not likely that winter diatoms represent average water quality condition, due to high concentration of nutrients. Water quality status assessed by diatom indices was generally worse than that assessed by BOD, indicating that BOD standard likely underestimates the biological condition of the water body. Importantly, nutrient-based diatom index (TDI) generally overestimated organic matter-based index (DAIpo) at most study sites, indicating that diatoms in studied rivers were likely more affected by nutrients than organic matter. Thus, management strategy to improve river water quality in Korea is suggested to emphasize more on the nutrients than organic matters.

키워드

과제정보

연구 과제 주관 기관 : 국립환경과학원

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