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NTIS 바로가기생태와 환경 = Korean journal of ecology and environment, v.50 no.1, 2017년, pp.46 - 56
이다혜 (목포해양대학교 해양시스템공학과) , 박건우 (목포해양대학교 해양시스템공학과) , 이창희 (명지대학교 환경에너지공학과) , 신용식 (목포해양대학교 해양시스템공학과)
The Youngsan River estuary was physically changed by the construction of a sea embankment at near the mouth of estuary. Weirs were also constructed recently in the freshwater zone and it was reported that algal blooms occur more frequently. The freshwater introduced into saltwater zone from sluice g...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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하구란 무엇인가? | 하구는 하천과 바다가 만나 담수와 해수가 혼합되는 전이수역으로 연간 최소 약 10조 원에 달하는 경제적 가치를 가진 것으로 보고되고 있다(Kauffman, 2011). 또한 육상에서 공급되는 영양염에 의해 매우 생산적인 시스템으로 알려져 있다(Ryther, 1969). | |
호주의 하구 관리 프로그램명은 무엇인가? | 하구의 이러한 경제적, 생태적 가치와 오염의 가속화로 인해 미국에서는 하구의 보전과 지속 가능한 관리를 위하여 국가하구프로그램 (Poole, 1996)을 수립하여 실시하고 있다. 또한 영국에서는 템즈하구프로그램 (TEP, 1999), 호주에서는 더웬트하구프로그램 (Humphries and Robinson, 1995) 등의 하구 관리 프로그램이 시행되면서 하구 오염의 최소화와 생태계 관리를 위해 노력하고 있다. 이러한 하구 관리 프로그램 중에서 하구의 수질 및 생물 서식지 상태를 평가하는 생태계 건강성은 해역의 오염 상태를 결정하는 중요한 관리기준으로 사용되고 있다(van Niekerk et al. | |
하구의 부영양화나 적조 등의 발생 원인은 무엇인가? | (1997)은 실제로 하구의 유기물 생산량이 옥수수 밭의 4~10배에 달하며, 생태적 가치가 1 ha당 US$ 22,832 yr-1 로 지구상의 생태계에서 가장 높은 수치를 나타내는 것으로 보고한 바 있다. 하지만 동시에 연안에서의 인간활동이 증가함에 따라 육지로부터 유입되는 오염물질에 의해 부영양화나 적조 등이 발생할 수 있는 수역이기도 하다(Li et al., 2014). |
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