Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
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Assessment of Seasonal Variation in Water Quality in Daedong Lake

대동호의 시기별 및 계절별 수질변화 평가

  • Yun, Jin-Ju (Department of Bioenvironmental Science, College of Life Science and Natural Resources, Sunchon National University) ;
  • Kang, Se-Won (Department of Bioenvironmental Science, College of Life Science and Natural Resources, Sunchon National University) ;
  • Park, Jong-Hwan (Division of Applied Life Science (BK21 Plus) & Institute of Agriculture and Life Science, Gyeongsang National University) ;
  • Seo, Dong-Cheol (Division of Applied Life Science (BK21 Plus) & Institute of Agriculture and Life Science, Gyeongsang National University) ;
  • Kim, Hyun-Woo (Department of Environmental Education, Sunchon National University) ;
  • Cho, Ju-Sik (Department of Bioenvironmental Science, College of Life Science and Natural Resources, Sunchon National University)
  • 윤진주 (순천대학교 생명산업과학대학 생물환경학과) ;
  • 강세원 (순천대학교 생명산업과학대학 생물환경학과) ;
  • 박종환 (경상대학교 응용생명과학부(BK 21플러스) & 농업생명과학원) ;
  • 서동철 (경상대학교 응용생명과학부(BK 21플러스) & 농업생명과학원) ;
  • 김현우 (순천대학교 환경교육과) ;
  • 조주식 (순천대학교 생명산업과학대학 생물환경학과)
  • Received : 2020.06.25
  • Accepted : 2020.07.31
  • Published : 2020.09.30
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Abstract

BACKGROUND: Most lakes have increased concerns about water pollution due to the inflow of non-point sources caused by human activities. Therefore, the lake water quality survey was conducted in order to propose effective plans for water quality management by analyzing the characteristics of lakes and the change of water quality. METHODS AND RESULTS: In order to investigate the physicochemical water quality in Daedong lake, water quality analysis was undertaken from July 2018 to June 2019. Water temperature was ranged from 7.8 to 34.3℃ and pH varied from 6.9 to 10.2. The concentration of Dissolved oxygen, Suspended solid, Biochemical Oxygen Demand (BOD), and Chemical Oxygen Demand (COD) were 5.6 ~ 17.2 mg/L, 2.4 ~ 35.3 mg/L, and 4.5 ~ 15.1 mg/L, and 0.9 ~ 2.8 mg/L, respectively. The Total Nitrogen (T-N) concentration ranged from 0.974 ~ 2.126 mg/L, and Total Phosphorus (T-P) concentration ranged from 0.014 ~ 0.057 mg/L. The Chlorophyll-a (Chl-a) ranged from 2.7 ~ 37.9 mg/㎥. Through Carlson TSIm assessment using T-P and Chl-a results, evaluating trophic state, Daedong lake was evaluated as mesotrophic. CONCLUSION: Water pollution management plan needs such as nutrient removal technology and nonpoint source management for prevention of eutrophication in Daedong lake.

Keywords

References

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