한국물환경학회지 (Journal of Korean Society on Water Environment)

  • 제38권1호
  • /
  • Pages.1-9
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  • 2022
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  • 2289-0971(pISSN)
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  • 2289-098X(eISSN)
한국물환경학회 (Korean Society on Water Environment)
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수리 변동에 따른 영산강에서의 수질 변화 분석 연구

Analysis of Water Quality Variation after Hydraulic Changes in Yeongsan River

  • 김유흔 (이화여자대학교 환경공학과) ;
  • 이혜원 (이화여자대학교 환경공학과) ;
  • 최정현 (이화여자대학교 환경공학과)
  • Kim, Yu-Heun (Department of Environmental Science and Engineering, Ewha Womans' University) ;
  • Lee, Hye-Won (Department of Environmental Science and Engineering, Ewha Womans' University) ;
  • Choi, Jung-Hyun (Department of Environmental Science and Engineering, Ewha Womans' University)
  • 투고 : 2021.11.24
  • 심사 : 2021.12.23
  • 발행 : 2022.01.30
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초록

The Yeongsan River, one of the four major rivers in Korea, shows the highest degree of water pollution compared to the other major rivers. The construction and opening of two weirs, Seungchon and Juksan, induced fluctuations in the hydrologic conditions and water quality of the river. To investigate the water quality changes caused by the opening of the weir in 2017, this study analyzed the water quality data using the non-parametric Wilcoxon signed-rank test and the three-dimensional spatiotemporal plots. The non-parametric statistical test results showed that the concentration of all parameters has increased after 2017 at a significance level of 0.05. For the parameters that showed the highest degree of change, chlorophyll-a and suspended solids, the median values have increased by more than 30% after weir opening. Visual analysis additionally showed the spatial changes in the Yeongsan River. Generally, the sites above the Seungchon weir showed higher pollution levels than those above the Juksan weir. In time series, visual analysis results also showed the trend of rising concentration for all water quality parameters, indicating that the opening of two weirs had a significant effect on the change in water quality of the Yeongsan River.

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과제정보

이 논문은 한국연구재단의 지원을 받아 수행되었습니다 (2018R1A6A1A08025520, 2018R1D1A1B07049419).

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