Korean Journal of Ecology and Environment (생태와환경)

The Korean Society of Limnology (한국수생태학회)
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Evaluation of Pollutant Characteristics in Yeongsan River Using Multivariate Analysis

영산강 수계 오염특성 파악을 위한 다변량 통계분석법의 적용

  • Jung, Soojung (Yeongsan River Environment Research Center, National Institute of Environmtental Research) ;
  • Lee, Dongjin (Yeongsan River Environment Research Center, National Institute of Environmtental Research) ;
  • Hwang, Kyungsup (Yeongsan River Environment Research Center, National Institute of Environmtental Research) ;
  • Lee, Kyounghee (Yeongsan River Environment Research Center, National Institute of Environmtental Research) ;
  • Choi, Kyoungchuk (Yeongsan River Environment Research Center, National Institute of Environmtental Research) ;
  • Im, Sangsun (Yeongsan River Environment Research Center, National Institute of Environmtental Research) ;
  • Lee, Yunhee (Yeongsan River Environment Research Center, National Institute of Environmtental Research) ;
  • Lee, Jaeyoung (Yeongsan River Environment Research Center, National Institute of Environmtental Research) ;
  • Lim, Byoungjin (Yeongsan River Environment Research Center, National Institute of Environmtental Research)
  • 정수정 (국립환경과학원 영산강물환경연구소) ;
  • 이동진 (국립환경과학원 영산강물환경연구소) ;
  • 황경섭 (국립환경과학원 영산강물환경연구소) ;
  • 이경희 (국립환경과학원 영산강물환경연구소) ;
  • 최경축 (국립환경과학원 영산강물환경연구소) ;
  • 임상순 (국립환경과학원 영산강물환경연구소) ;
  • 이윤희 (국립환경과학원 영산강물환경연구소) ;
  • 이재영 (국립환경과학원 영산강물환경연구소) ;
  • 임병진 (국립환경과학원 영산강물환경연구소)
  • Received : 2012.07.28
  • Accepted : 2012.11.18
  • Published : 2012.12.31
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Abstract

This study evaluated the water quality of Yeongsan River by multivariate analysis using the data collected during 2001~2010. Water quality in Yeongsan River could be explained up to 75.2% by four factors, which were included in loading of nutrients (32.021%) and organic matters (17.453%), seasonal variation (14.775%) and microbes (10.951%). The results of cluster analysis were classified into three groups by factor 1 and 2, which has different water quality characteristics. Group 1 included sampling stations located in the upper stream and estuary dyke of Yeongsan River, group 2 included Gwangju 1 and Gwangsan affected by domestic sewage of Gwangju-cheon, and group 3 included sampling stations located in the midstream around the livestock farm and farmland.

본 연구는 영산강수계 수질 특성을 파악하기 위하여 2001~2010년까지 영산강 본류 10개 지점의 수질측정자료를 활용하여 총 18개 수질항목에 대하여 다변량분석법을 이용하여 수질항목간의 상관관계 및 요인분석, 군집분석을 수행하였다. 수질항목간 상관성은 BOD는 T-N, T-P와 높은 양의 상관성을, Chl-a는 COD와 유의한 양의 상관성을 보였다. 요인분석 결과 제1요인이 영양염류요인(32.021%), 제2요인이 유기물 및 조류증식에 따른 물질대사 요인(17.453%), 제3요인이 계절적 변동요인(14.775%), 제4요인이 미생물요인(10.951%)으로 추출되었다. 요인분석 결과로부터 추출된 제1요인과 제2요인에 대한 군집 분석 결과, 오염도가 낮은 그룹, 광주천 및 하수처리수 방류의 영향이 큰 오염도가 높은 그룹, 축산농가 및 농경지 등이 인근에 분포하는 그룹 등 3 그룹으로 분류되었다.

Keywords

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