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NTIS 바로가기한국환경생태학회지 = Korean journal of environment and ecology, v.32 no.4, 2018년, pp.381 - 391
안채희 (상지대학교 생명과학과) , 한중수 (상지대학교 생명과학과) , 최준길 (상지대학교 생명과학과) , 이황구 (상지대학교 생명과학과)
The purpose of this study is to investigate the influence of artificial disturbances occurring during water conveyance frequency on benthic macro-invertebrate by comparing and analyzing data before and after the construction of Boryeong dam in Boryeong-si, Chungcheongnam-do. We conducted the survey ...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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보령댐의 저수율 감소 문제를 해결하기 위한 방안은 무엇인가? | 36%까지 감소하여 이로 인한 용수공급의 문제가 제기되었다(Geum river water system management commission, 2017). 이에 저수율 감소 문제를 해결하기 위해 2015년 10월부터 2016년 2월까지 백제보 하류 6.7km 부터 보령댐 상류 지역인 반교천으로 댐 내 취수를 위한 취수관로인 도수로를 건설하였다. 보령댐 도수로 건설 이후 대표적인 가뭄 지역이었던 충청남도 서북부지역은 이례적인 가뭄에도 안정적으로 대처할 수 있는 구조적 대책이 마련되었으며 (Lee, 2016), 2017년 3월부터 도수를 시작한 후 현재까지 보령댐의 저수율이 증가하고 있는 추세이다. | |
보령댐이란? | 이러한 우리나라의 기후특 성에 따른 문제를 해결하기 위해 다목적 댐을 건설하여 수자원을 관리하고 있으나 다목적 댐은 갈수시 급격한 유량변 화를 초래할 수 있으며, 최근에는 지구온난화 등으로 인하여 가뭄의 빈도 및 피해가 점차 증가하고 있는 추세이다 (Park, 2008; Choi, 2017). 본 연구 대상지역인 보령댐은 1992년 6월부터 1996년 10월까지 충청남도 서북부지역의 생활용수와 공업용수 등을 공급하기 위하여 건설된 다목적 댐이다. 총 저수량은 1억 1,700만톤으로 현재까지도 댐의 주요 역할을 수행하고 있지만 최근 가뭄에 따른 강수량이 감소하고, 가뭄 빈도가 증가함에 따라 댐의 저수율이 감소 하고 있다. | |
본 논문에서 시행한 보령댐의 도수 전과 후의 저서성 대형무척추동물상을 분석한 연구의 결과는 어떠한가? | 조사시기는 2016년 4월부터 2017년 9월까지 총 8회에 걸쳐 조사하였으며, 조사지점은 방류되는 지점부터 총 4개의 지점을 선정하였다. 저서성 대형무척추동물은 총 4문 7강 19목 70과 125종 13,447개체가 출현하였다. 군집분석 결과 우점도 0.55(${\pm}0.07$)에서 0.47(${\pm}0.08$), 다양도 2.06(${\pm}0.26$)에서 2.23(${\pm}0.28$), 균등도 0.69(${\pm}0.05$)에서 0.70(${\pm}0.04$), 풍부도 3.43(${\pm}0.72$)에서 4.03(${\pm}0.91$)으로 나타났다. 도수 이후 우점도는 감소하고 다양도, 균등도, 풍부도는 증가하는 안정적인 군집구조로 나타났다. 기능군 분석 결과 도수 이후 섭식기능군은 긁어먹는 무리, 걸러먹는무리의 비율은 증가하고 썰어먹는무리, 주워먹는무리의 비율은 감소하였으며, 서식기능군은 기어오르는 무리와 붙는무리의 비율은 증가하고 굴파는무리와 기는무리의 비율은 감소하는 것으로 나타났다. 군집안정성 분석결과 도수 이후 St. |
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