대한환경공학회지 (Journal of Korean Society of Environmental Engineers)

  • 제32권1호
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  • Pages.9-16
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  • 2010
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  • 1225-5025(pISSN)
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  • 2383-7810(eISSN)
대한환경공학회 (Korean Society of Environmental Engineers)
권호 표지

하구갯벌에 있어서 퇴적유기물의 기원 해석

The Origin of Sediment Organic Matters at Tidal Flat in Estuary

  • 신우석 (일본 동북대학 대학원 공학 연구과 생태공학 연구실) ;
  • 이용두 (제주대학교 환경공학과) ;
  • ;
  • ;
  • ;
  • Shin, Woo-Seok (Graduate school of Engineering Department of Ecological Engineering, Tohoku University) ;
  • Lee, Yong-Doo (Department of Civil & Environmental Engineering, Cheju University) ;
  • Fujibayashi, Megumu (Graduate school of Engineering Department of Ecological Engineering, Tohoku University) ;
  • Nagahama, Yumi (Graduate school of Engineering Department of Ecological Engineering, Tohoku University) ;
  • Nomura, Munehiro (Graduate school of Engineering Department of Ecological Engineering, Tohoku University) ;
  • Nishimura, Osamu (Graduate school of Engineering Department of Ecological Engineering, Tohoku University)
  • 투고 : 2009.05.07
  • 심사 : 2009.12.03
  • 발행 : 2010.01.31
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초록

하구 간석 퇴적 유기물의 기원과 계절적 변동 특성을 해명하는 것을 목적으로, 나나키타강 하구 갯벌의 세립토 함유율(<63 ${\mu}m$), Chl.a, TOC, C/N비 및 탄소 질소 안정동위원소 비(${\delta}^{13}C$, ${\delta}^{15}N$)를 측정했다. 그 결과, 모래질 갯벌에서는 해양성 기원 유기물과 부착 조류의 영향이 큰 것으로 밝혀졌다. 반면, 진흙질 갯벌에서는 육지 기원 유기물의 영향이 컸다. 게다가 퇴적물중의 유기물량과 유기물의 기원은 계절에 따라 변동 하는 것이 분명하고, 그 요인으로서는, 모래질 갯벌에서는 부착 조류와 고조(高潮) 및 월파(越波)에 의한 퇴적이 주요인이었으며, 진흙질 갯벌에서는 육상에서의 유기물의 유출에 의한 퇴적이 특징적이었다.

The purpose of this study is to clarify the origin of organic matters on sediment and the characteristics of seasonal variation at an estuarine tidal flat. Silt-clay content (<63 ${\mu}m$), chlorophyll a, TOC, C/N ratio and the stable isotope ratio of carbon and nitrogen were measured at tidal flat around the estuary of the Nanakita River. As a result, organic matters originating from marine organic matter and bethic microalgae greatly contributed to sedimentation of organic matters at Stn.A, sandy tidal flat, though terrigenous organic matters did at Stn.C, muddy tidal flat. Furthermore, it was revealed that the volume and origin of organic matters in the sediments depended on seasonal variation, and the factors were different from the Stns, i.e. bentic microalgae and event for Stn.A, and the eventual sedimentation of organic matters originating from terrestrial plants, respectively.

키워드

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