[논문]금강하구언 조성으로 인한 환경변화: 호수측과 하구측 비교

양재삼

doi:10.7846/jkosmee.2014.17.1.52

금강하구언 조성으로 인한 환경변화: 호수측과 하구측 비교
Changed Aquatic Environment Due to An Estuary Dam: Similarities and Differences Between Upstream and Downstream 원문보기

한국해양환경ㆍ에너지학회지 = Journal of the Korean Society for Marine Environment & Energy, v.17 no.1, 2014년, pp.52 - 62

초록
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금강 하구언 건설 이후 20년 동안 나타난 수서환경의 각종 변화에 관한 연구결과를 호수측과 하구측을 비교하는 방식으로 정리하였다. 유사한 점은 양측 모두에서 물의 체류시간 증가, 수질악화, 퇴적물내 유기물농도 증가, 하천유입 퇴적물의 이동경로 차단현상이 나타났다. 전체적으로 호수측이 하구측보다 악영향이 강하게 나타났지만, 호수측에서는 영양염농도의 증가와 남조류 대량발생 등 수질악화현상이 두드러지게 나타난 반면, 하구측에서는 퇴적물의 이동경로차단으로 인하여 군산하구내 퇴적현상이 심화되어 정상적인 하구의 기능을 저해하고 있다.

Abstract ▼ AI-Helper

As a case study of the changed aquatic environment due to an estuary dam, the Geum River Estuary Dam System (GREDS) has been investigated for the last two decades. We sought the similarities and differences in the disrupted aquatic environment between the estuarine and lacustrine sides of the GREDS. Both sides of the GREDS shared similar aquatic disruptions, such as elongated hydraulic residence times, deteriorated water quality, highly accumulated organic-rich sediments, and considerable siltation of river-transported materials prior to reaching coastal waters. The disruptions of water quality such as high nutrients concentration and frequent bloom of blue-green algal are much more noticeable in the reservoir than in the estuary. However serious siltation problem has been reported from the estuary, which will possibly threaten the proper functioning of the natural Kunsan Estuarine System.

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제안 방법

As a comparative summary of the previous investigations, this work compiles the disrupted aquatic conditions of the GREDS, focused on the similarities and differences between the estuarine and the lacustrine sides. Our discussion based on the review (Friedl & Wüest [2002]) regarding to aquatic disturbances of freshwater regimes by damming that impoundment of fresh water effects not only the hydrology of the ecosystem, but also its physical, chemical, and biological characteristic.
[2005]). Therefore, as a comparative summary of the previous investigations, this work compiles changes of aquatic conditions in the GREDS, focused on the physical, chemical, and biological changes of the estuary and lacustrine sides between pre-dam and post-dam.

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