연안생태환경공간 조성지의 생물-화학적 복원지수 평가

이인철(Lee In-Cheol),이병호(Yi Byung Ho),박소영(Park Soo Young),류청로(Ryu Cheong Ro) 대한토목학회 2008 대한토목학회논문집 B Vol.28 No.1B

대규모 연안개발에 따른 매립사업으로 연안역의 갯벌 또는 염습지 등의 연안생태환경공간은 해마다 감소하고 있다. 이에 따라 연안역 자연환경의 완화조치(Mitigation)의 일환으로 인공갯벌 및 염습지 개발의 필요성이 대두되어 활발한 연구가 진행되고 있으나, 인공 연안공간 조성시 복원정도의 정량적 평가에 관한 연구는 미흡한 실정이다. 따라서 본 연구에서는 연안 생태환경공간 조성지의 복원정도 평가에 대한 기초적인 연구로서, 준설토 배합비에 따라 구분되는 인공갯벌(Zone. P1) 및 염습지(Zone. P2) 현장시험구를 조성하여 생물화학적 환경인자인 시험구 내 대형저서동물 군집의 생물다양성과 개체수 및 생체량/식생(갈대)의 정착률/종속영양세균수/이화학적 특성(COD, IL, TN, TP, pH)에 대한 환경성 모니터링을 수행하였다. 이 결과를 바탕으로 각 환경인자들의 복원정도를 나타내는 복원지수를 제안하여 연안생태환경공간 조성에 따른 복원정도를 정량적으로 평가하였다. The ecological environmental zones in coastal area, like tidal flat and salt marsh, were gradually decreased due to large scale of coastal development projects, reclamation and so on. Therefore, the development of artificial tidal flat and salt marsh has been emphasized in coastal area as mitigation concept and studies on related this background has performed. But studies on the quantitative evaluation for degree of restoration were insufficient. In this paper, as a fundamental study for evaluation of restoration on the creation of ecological environmental zones in coastal area, it was conducted that the monitoring and experiment for bio-chemical factors (bio-diversity, population and biomass of macro-benthos, survival ratio of reed, the number of het-erotrophic bacteria and physico-chemical characteristics such as COD, IL, TN, TP and pH) using a in-situ pilot plant of tidal flat (Zone. P1) and salt marsh (Zone. P2), which was distinguished by content of dredged soil, in Jinudo, Nakdong estuary. From results of this study, the restoration index (RI), for evaluation concerning degree of restoration on the creation of ecological environmental zones in coastal area, was suggested and quantitative evaluation was performed using a restoration index (RI).

굴 패각 피복 콘크리트 기질의 해조류 착생에 관한 연구

이인철,박성식,우희은,정일원,최창근,김경회,Lee, In-Cheol,Park, Seongsik,Woo, Hee-Eun,Jeong, Ilwon,Choi, Chang Geun,Kim, Kyunghoi 해양환경안전학회 2021 해양환경안전학회지 Vol.27 No.5

바다숲 복원과 함께 굴 패각의 새로운 자원화를 위해 굴 패각을 피복시킨 콘크리트 기질을 부산광역시 기장군 일광면 동백리 연안에 설치하여 약 1년간(2020년 1월~11월) 해조류 피도 변화를 모니터링하였다. 1월 모니터링 결과, 대조구인 일반 콘크리트 기질에는 해조류가 출현하지 않았다. 이에 반해 굴 패각을 10 ~ 90 % 피복시킨 실험구에는 해조류가 약 10 ~ 80 %의 피도로 착생한 것을 확인하였다. 또한, 11월 실험구의 피도는 대조구 대비 최대 49 % 높게 나타났다. 이상의 결과로부터 콘크리트 기질의 인공어초에 굴 패각 피복을 통해 인공어초의 해조류 착생을 촉진할 수 있으며, 수산 부산물인 굴 패각의 새로운 자원화 방안을 제시하였다. In this study, we located concrete substratum covered by oyster shells in the coastal area of Gijang-gun, Busan, South Korea, and monitored changes in coverage of macroalgae for approximately a year from January 2020 to determine the potential for sea forest restoration and resourceization of the oyster shells. At the start of monitoring, we observed that macroalgae coverage of the oyster-shell-covered concrete substratum (treatment) was 10 - 80 %, whereas no macroalgae were attached to the normal concrete substratum (control). By November, macroalgae coverage of the treatment had increased by 49 % compared to that of the control. We concluded that covering oyster shell on a sea forest reef can promote macroalgae establishment and the possibility of sea forest restoration by the resourceization of oyster shells.

부영양화된 뢰호내해의 수질관리를 위한 수ㆍ저질예측모델의 적용

이인철,장선덕,김종규,Lee In Cheol,Chang Sun-duck,Kim Jong Kyu,Ukita Masao 한국해양환경·에너지학회 1998 한국해양환경·에너지학회지 Vol.1 No.2

대표적인 부영양화 해역인 일본의 뢰호내해를 대상으로 하여 해수ㆍ저질문의 욕존 산소와 영양염의 수수과정을 표현할 수ㆍ저질예측모델을 개발하여, 해역의 유입부하량과 수질의 응답특성, 부하량삭감의 영향해석 및 유입부하량과 수산자원의 관계 해석을 통하여 부영양화 해역의 수질관리방안에 대하여 연구하였다. 부하에 대응한 수질의 장기예측결과, 부하량과 수질의 응답특성이 해역에 따라 다르게 나타난다. 적상부하량의 간역추산방법으로서 인접해역의 부하영향 및 기여율을 포함한 부하삭감후의 수질예측에 대한 개산식을 제안하였다. 부하량 삭감효과의 수직계산결과 인(P) 뿐만 아니라 질소(N)의 부하삭감의 영향이 크게 기여함을 보였다. 유입부하량과 수산자원의 관계를 수질을 매개로 검토한 바, 뢰호내해와 같은 부영양화 해역에서는 유입부하량의 증가는 1차생산량의 증가에 반영되지만 2차생산 이후의 전송효율에도 한도가 있는 것으로 나타났다. The management of water quality and fishery resources with a major environmental problem in eutrophic coastal sea is studied. The numerical experiments using the water-sediment quality model (WSQM) were carried out for the management of water quality at the Seto Inland Sea in Japan. The results of long-term water quality simulation showed responses of seawater quality to input loads to vary in different localities. A formula roughly forecasting water qualify to estimate the effect of loading abatement was proposed. The simulation for the improvement of seawater quality showed the abatements of nutrient loads such as total phosphorus (TP) and total nitrogen (TN) as well as organic loads such as chemical oxygen demand (COD) to be peformed in the eastern Seto Inland Sea from Bisan Seto to Osaka Bay. On the other hand, it is indicated that the increase of loading leads to the increase of primary production. while not straightly to the increase of fish production for the catch of fisheries.

보강된 복합적층 판넬의 좌굴 및 좌굴후 거동 연구

이인철,경우민,공철원,홍창선,김천곤,Lee, In-Cheol,Gyeong, U-Min,Gong, Cheol-Won,Hong, Chang-Seon,Kim, Cheon-Gon 대한기계학회 1996 大韓機械學會論文集A Vol.20 No.10

The buckling and postbuckling behaviors were sutdied analytically and experimentally for stiffened laminated composite panels under compression loading. The panels with I-, blade, -and hat-shapeed stiffeners were investigated. In the analysis, the stiffened panels were anlyzed using the nonlinear finite element method combined with an improved arc-length method. The progressive failure analysis was done by adopting the maximum stress criterion and complete unloading failure model. The effects of the fiber angles were investigated on the buckling and postbuckling behaviors. In the experiment, the web and the lower cap of each stiffener were formed by the continuous lay-up of the skin for cocuring the stiffened panels. Therefore, the separation between stiffener and skin was not found in the junction part even after postbuckling ultimate load and the stiffened panels had excellent postbuckling load carrying capacity. A shadow moire thchnique was used to monitor the out-of-plane deformations of the panels. The piezoelectric films were attached to the panels to get the failure characteristics of the panel. The analytical results on the buckling load, postbuckling ultimate load, and failure pattern showed good agreement with the experimental results.

태풍내습시 수영만내에서의 파랑특성 분석을 위한 수치실험연구

김동환(Dong-Hwan Kim),유창일(Chang-Ill Yoo),이인철(In-Cheol Lee),김헌태(Heon-Tae Kim),류청로(Cheong-Ro Ryu) 한국해양환경·에너지학회 2012 한국해양환경공학회 학술대회논문집 Vol.2012 No.5

In order to research the wave characteristics in Suyeong bay on typhoons in 201this study were carried out observation of waves on typhoon "Ma-on" and "Muifa", calculation of wave characteristics using STWAVE and comparison with significant wave heights between observed and calculated data at three in-situ measurements (Geoje floating buoy, Gwangan light beacon, Observation point). The model input parameters are significant wave height, peak period and wave direction in Case 1 and changed edited wave direction instead of original it in Case 2. As the result of this study, the maximum significant wave height at Gwangan light beacon (St. 1) and Observation point (St. 2) in case of "Ma-on" was observed, respective^ 2.8m, 2.6m and calculated by STWAVE L76m, 2,8m Also, the maximum significant wave height in case of "Muifa" observed at St 1 and St 2 was 3.5m, 3.82m and calculated 25m, 3.97m, respectively. Our found significant differences between the observed and numerical in Gwangan light beacon on two typhoons but no significant differences between the observed and numerical in Observation point on two typhoons.

광호흡으로 방출되는 NH3 의 재동화에 관한 연구

이인철,이순희 ( In Cheol Lee,Sun Hi LEE ) 생화학분자생물학회 1985 BMB Reports Vol.18 No.4

Treatment of L-methionine sulfoximine (MSO), a specific irrevesible inhibitor of glutamine synthetase, caused about 60% inhibition of photorespiration in pea (Pisum sativum L.) leaf discs at a concentration of 2 mM. MSO also inhibited photosynthetic COz fixation, but inhibition rate was only about 4096 of control. There was increased incorporatation of ^(14)C into organic acids from CO₂ with MSO and decreased into amino acids and neutral fraction. Expecially, MSO increased the incorporation of ^(14)C into glyoxylate. However, ^(14)C of glycolate was lower level than that of control. These results showed that NH₃ released from photorespiration seemed to be reassimilated into glutamine by glutamine synthetase, and inhibition of photorespiration by MSO was chiefly caused by depression of photorespiratory nitrogen cycle.

태풍내습시 수영만내에서의 파랑특성 분석을 위한 수치실험연구

김동환(Dong-Hwan Kim),유창일(Chang-Ill Yoo),이인철(In-Cheol Lee),김헌태(Heon-Tae Kim),류청로(Cheong-Ro Ryu) 대한조선학회 2012 대한조선학회 학술대회자료집 Vol.2012 No.5

In order to research the wave characteristics in Suyeong bay on typhoons in 2011, this study were carried out observation of waves on typhoon "Ma-on" and "Muifa", calculation of wave characteristics using STWAVE and comparison with significant wave heights between observed and calculated data at three in-situ measurements (Geoje floating buoy, Gwangan light beacon, Observation point). The model input parameters are significant wave height, peak period and wave direction in Case 1 and changed edited wave direction instead of original it in Case 2 As the result of this study, the maximum significant wave height at Gwangan light beacon (St.1) and Observation point (St. 2) in case of "Ma-on" was observed, respectively, 2.8m, 2.6m and calculated by STWAVE 1.76m, 2.8m. Also, the maximum significant wave height in case of "Muifa" observed at St. 1 and St. 2 was 3.5m, 3.82m and calculated 2.5m, 3.97m, respectively. Our found significant differences between the observed and numerical in Gwangan light beacon on two typhoons but no significant differences between the observed and numerical in Observation point on two typhoons.

Home Delivery System 혁신 사례-고객중심 납기약속체제 구현

이인철,Lee, In-Cheol 한국물류협회 2006 물류혁신 컨퍼런스 Vol.14 No.2

운송계획 최적화를 통한 수배송체계혁신

이인철,Lee, In-Cheol 한국물류협회 2005 물류혁신 컨퍼런스 Vol.13 No.2

대학들이여, 교육 투자 아끼지 마라

이인철,Lee, In-Cheol 한국대학교육협의회 2001 大學敎育 Vol.110 No.-