Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
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Evaluation of Eco-Hydrological Changes in the Geum River Considering Dam Operations: I. Flow Regime Change Analysis

댐 운영을 고려한 금강의 생태.수문학적 변화 평가 : I. 유황변화 분석

  • Ko, Ick-Hwan (K-water Institute, Korea Water Resources Corporation (K-water)) ;
  • Kim, Jeong-Kon (K-water Institute, Korea Water Resources Corporation) ;
  • Park, Sang-Young (K-water Institute, Korea Water Resources Corporation)
  • 고익환 (한국수자원공사 수자원연구원) ;
  • 김정곤 (한국수자원공사 수자원연구원) ;
  • 박상영 (한국수자원공사 수자원연구원)
  • Published : 2009.01.31
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Abstract

In this study, based on the major activities which might have affected the ecological system of the Geum River, a conceptual model was proposed to guide scenario development for the eco-hydrological river evaluation. Also, an analysis method employing a set of models consisting, with other supporting programs, of KModSim for watershed network analysis and RAP for ecosystem analysis was developed for eco-hydrological river assessment. Then, hydrological analyses with various scenarios were conducted to examine the flow regime changes expected from the construction and operation of the Youngdam Multipurpose Dam (YMD) and Daecheong Multipurpose Dam (DMD) in the Geum River basin. The results indicated that the "Percentile 10" values for 10% exceeding time were decreased by 20.5% and 8.0% at Sutong downstream of YMD and Gongju downstream of DMD, respectively, while "Percentile 90" values for 90% exceeding time were increased by 56.3% and 340.8% at Sutong and Gongju, respectively, resulting in the reduction of the high flow variability typical for unregulated rivers in Korea. The results of eco-hydrological analyses will be presented in the following papers.

본 연구에서는 금강의 생태계에 영향을 끼쳤을 가능성이 있는 주요 개발 및 관리 활동들을 기초로 하여 생태수 문학적인 하천평가 시나리오 구성을 위한 개념모델을 제시하였다. 또한 생태수문학적 하천평가를 위하여 여러 지원 프로그램과 함께 유역물수지 모델인 KModSim과 하천생태분석 모델인 RAP을 이용한 분석방법을 개발하였다. 용담댐과 대청댐의 건설 및 운영에 따라 예측되는 유황변화를 분석하기 위하여 다양한 시나리오에 따른 수문분석을 실시한 결과에 의하면, 수통 및 공주지점에서 초과시간 10%에 해당하는 "Percentile 10" 값은 각각 20.5%, 8.0% 감소한 반면, "Percentile 90" 값은 각각 156.3%, 340.8%나 증가하여 저유량의 변화가 크게 나타났으며, 이는 한국의 비조절하천의 특징인 큰 유황변동율을 감소시킨 것으로 나타났다. 후속 논문에서는 생태-수문학적 분석결과를 제시 할 것이다.

Keywords

References

  1. 김남원, 이정은, 이병주 (2007). “한강유역의 다목적댐 운영에 따른 유황변동 특성 분석 및 평가.” 대한토목학회논문집, 대한토목학회, 제27권, 제1-B호, pp. 53-63
  2. 이진원, 김형섭, 우효섭 (1993). “댐건설로 인한 5대수계본류의 유황변화 분석.” 대한토목학회논문집, 대한토목학회, 제13권, 제3호, pp. 79-91
  3. 정태성, 강신욱, 고익환, 황만하 (2007). “금강유역에서의 KModSim을 이용한 의사결정지원시스템 개발 및 적용성 검토.” 대한토목학회논문집, 대한토목학회, 제27권, 제3-B호, pp. 319-329
  4. 한국수자원공사 (1997). 댐건설 전후의 자연환경변화에 관한 연구보고서, WRRI-WR-97-9
  5. Arthington, A.H., Bunn, S.E., Poff, N.L., and Naiman, R.J. (2006). “The challenges of providing environmental flow rules to sustain river ecosystem.” Ecological Applications, Vol. 16, pp. 1311-1318 https://doi.org/10.1890/1051-0761(2006)016[1311:TCOPEF]2.0.CO;2
  6. Bunn, S.E., and Arthington, A.H. (2002). “Basic principles and ecological consequences of altered flow regimes for aquatic biodiversity.” Environmental Management, Vol. 30, No. 4, pp. 492-507 https://doi.org/10.1007/s00267-002-2737-0
  7. Jorde, K. (2006). “Reservoir Operations and Ecosystem Losses.” Proceedings The 2nd International Workshop on River Environment, KICT, Korea, pp. 41-66
  8. Marsh, N. (2004). River Analysis Package Users Guide, CRC for Catchment Hydrology, Australia
  9. Naiman, R.J., Magnuson, J.J., McKnight, D.M., and Stanford, J.A. (1995). The freshwater imperative: A research agenda. Island Press, Washington DC, pp. 165
  10. Sparks, R.E. (1995). "Need for ecosystem management of large rivers and floodplain." Bioscience, Vol. 45, pp. 168-182 https://doi.org/10.2307/1312556
  11. Ward, J.V., Tockner, K., and Schiemer, F. (1999). "Biodiversity of floodplain ecosystem; Ecotones and connectivity." Regulated Rivers Research and Management, Vol. 15, pp. 125-139 https://doi.org/10.1002/(SICI)1099-1646(199901/06)15:1/3<125::AID-RRR523>3.0.CO;2-E

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