• 제목/요약/키워드: Coastal Vegetation

검색결과 217건 처리시간 0.094초

가사도 폐염전의 식생 현황에 관한 생태학적 연구 (Ecological Studies on the Vegetation of Abandoned Salt field in Gasado)

  • 김하송;임병선;이점숙;박송의
    • 한국환경생태학회지
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    • 제17권2호
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    • pp.123-132
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    • 2003
  • 본 조사는 2002년 7월부터 9월까지 진도군 가사도에서 도서연안 폐염전의 식생 현황을 조사하기 위하여 Braun-Blanquet and Elenberg의 방법에 따라 21개의 방형구(1${\times}$1m, 1${\times}$2m)를 설치하여 생태학적 조사하였다. 조사된 폐염전의 관속식물은 17과 48종이며, 이중에서 염생식물은 20종(42%), 중성식물은 28종 (58%)이 나타났다. 또한 폐염전에서 서식지의 교란은 염생식물의 교란으로 나타났으며, 이 지역에서 귀화식물은 오리새, 달맞이꽃, 망초, 코스모스 등의 23종이 분포하고, 이중에서 중성식물이 20종(71%) 분포하고 있었다. 식생군락은 염생식물 초지군락은 갯질경군락, 갯개미자리군락, 칠면초군락, 습지 초지군락은 갈대군락, 천일사초군락, 가는잎모새달군락, 중성 초지군락은 실망초군락과 갯당근군락 등으로 구분되었다. 각 군락들의 폐염전에서 식생의 구조, 분포, 변화에 대해서 설명하고, 식생표와 현존식생도를 작성하였다.

쓰나미-식생 비선형 상호작용의 동적해석을 위한 3차원 수치파동수조의 적용 (Application of 3-D Numerical Wave Tank for Dynamic Analysis of Nonlinear Interaction between Tsunami and Vegetation)

  • 이우동;허동수
    • 대한토목학회논문집
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    • 제36권5호
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    • pp.831-838
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    • 2016
  • 최근 해안공학분야에서 식생을 활용하는 연안방재시스템에 관한 관심이 증가하고 있다. 이에 본 연구에서는 쓰나미-식생 비선형 상호작용에 의한 파동장과 유동장을 해석하기 위하여 식생항력에 따른 에너지소산을 직접 해석할 수 있는 3차원 수치파동수조를 기존의 3-D N-S solver (LES-WASS-3D ver. 2.0, HYMO-WASS-3D)를 토대로 개발하였다. 그리고 기존의 실험결과와 비교 및 검토를 통한 수치파동수조의 적용성을 평가하였다. 그 결과 레이놀즈수에 따라 능동적으로 추정되는 항력계수를 고려한 경우가 평균 항력계수를 적용한 경우보다 실험에서 얻어진 각 지점의 시간파형을 잘 재현하였다. 또한 식생밀도 및 입사파고에 따라 계산된 고립파의 전달률이 실험의 측정값과 높은 일치도를 나타내었다. 이로써 본 연구에서 식생에 의한 항력으로서 동적항력계수를 적용한 3차원 수치파동수조의 타당성 및 유효성을 확인하였다.

연안 분지 지역 상공에서의 대기 중 CO2 시뮬레이션 결과와 항공 관측 사례 비교 (Comparisons of Aircraft Observations and Simulation Results of Atmospheric CO2 over Coastal Basin Areas)

  • 박창현;이귀옥;정우식
    • 한국환경과학회지
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    • 제26권6호
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    • pp.741-750
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    • 2017
  • A model coupling a meteorological predictive model and a vegetation photosynthesis and respiration model was used to simulate $CO_2$ concentrations over coastal basin areas, and modeling results were estimated with aircraft observations during a massive sampling campaign. Along with the flight tracks, the model captured the meteorological variables of potential temperature and wind speed with mean bias results of $0.8^{\circ}C$, and 0.2 m/s, respectively. These results were statistically robust, which allowed for further estimation of the model's performance for $CO_2$ simulations. Two high-resolution emission data sets were adopted to determine $CO_2$ concentrations, and the results show that the model underestimated by 1.8 ppm and 0.9 ppm at higher altitude over the study areas during daytime and nighttime, respectively, on average. Overall, it was concluded that the model's $CO_2$ performance was fairly good at higher altitude over the study areas during the study period.

TWINSPAN과 CCA Ordination에 의한 서해안 곰솔림과 토양환경과의 상관 분석 (An Analysis of Correlation between Pinus thunbergii Forests and Soil Conditions by TWINSPAN and CCA Ordination in West Coast of South Korea)

  • 김민하;박종민;장규관
    • 한국환경복원기술학회지
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    • 제19권1호
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    • pp.45-59
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    • 2016
  • Vegetation and soil conditions of four sites in west coastal forests in South Korea, were examined to analyze the relationship between Pinus thunbergii forests structure and soil conditions. The P. thunbergii forests were divided into four clusters; 1) P. thunbergii - Prunus sargentii var. sargentii, 2) P. thunbergii - Robinia pseudoacacia, 3) P. thunbergii - P. densiflora and 4) P. thunbergii - Quercus serrata. The soil of each site was poor in chemical characteristics but good enough for land plants to grow because of its low salt concentration. According to the results by CCA Ordination, certain excessive soil nutrition has influenced on vegetation and specific species distribution. Forty eight species were found in the whole sites of coastal forests and some species appeared in every site. They are P. thunbergii, R. pseudoacacia, Rhus chinensis, Idesia polycarpa and Morus alba. For the tree species importance value, P. thunbergii was followed by R. pseudoacacia, Q. serrata, P. densiflora, Celtis sinensis, M. alba, I. polycarpa and Q. mongolica in order.

해수면온도와 식생효과를 고려한 연안도시지역의 대기환경예측 (Atmospheric Environment Prediction to Consider SST and Vegetation Effect in Coastal Urban Region)

  • 지효은;이화운;원경미
    • 한국환경과학회지
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    • 제18권4호
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    • pp.375-388
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    • 2009
  • Numerical simulation is essential to indicate the flow of the atmosphere in the region with a complicated topography which consists of many mountains in the inland while it is neighboring the seashore. Such complicated topography produces land and sea breeze as the mesoscale phenomenon of meteorology which results from the effect of the sea and inland. In the mesoscale simulation examines, the change of the temperature in relation to the one of the sea surface for the boundary condition and, in the inland, the interaction between the atmosphere and land surface reflecting the characteristic of the land surface. This research developed and simulated PNULSM to reflect both the SST and vegetation effect as a bottom boundary for detailed meteorological numerical simulation in coastal urban area. The result from four experiments performed according to this protocol revealed the change of temperature field and wind field depending on each effect. Therefore, the lower level of establishment of bottom boundary suitable for the characteristic of the region is necessary to figure out the atmospheric flow more precisely, and if the characteristic of the surface is improved to more realistic conditions, it will facilitate the simulation of regional environment.

해안간척지의 생태적 환경복원을 위한 식물 선정에 관한 연구 -인천공항 사토장지역을 중심으로- (Plant Species Selection Program for Ecological Restoration of Coastal Reclaimed Land -Focused on the Dumped Soil Area at Inchon Airport-)

  • 배영훈;이동근
    • 한국환경복원기술학회지
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    • 제4권3호
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    • pp.66-74
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    • 2001
  • The main purpose of this thesis is to select the appropriate plants for the ecological restoration of coastal land. The soil and vegetation environment survey of the beach where the halophytes live now was executed for the sake. Firstly, the soil survey was done by the physical and chemical survey of beach soil and dumped soil. The soil is mostly sandy loam and sandy clay loam which has silty much. The beach soil where the salt plants live has more organic matters in the content than dumped soil because of the influx of the dead halophytes, a pioneer plant to this area. Secondly the vegetation survey was executed by the halophytes survey in the beach area in order to select the appropriate plants for ecological restoration. The shows two different areas in the vegetation divided by the salt density of soil. Artemisia fukudo, Juncus haenkei, Carex pumila, Silene armeia, Polyponum aviculare etc live in the less salt density area and it doesnt show collected. Salicornia herbacea, Suaeda asparagoides, Aster tripolium, Limonium tetragonum, Suaeda maritima, Scirus fluvitilis, Phragmtes communis, Suaeda japonica, Zoysia sinica etc halophytes live in the more salt density area and there are a few advent plant but many collected. So the salt density of soil limits the vegetation. The selection of appropriate plants for the ecological restoration programs was designed with 3 different standards considering the salt density of soil in the dumped soil area. The plan selection guidelines of thick salt density due to the salt density of soil, and economical efficiency and maintenance because the area is large. The guidelines of middle salt density area were made considering economical efficiency and maintenance because there are salt as well, and it is effective for the scenery if they have normal ecology but their leaves have good color and the flowers are beautiful. However I suggest beautiful flowery plants for the neutral plan area because this area is the entry point of the airport so the view is very important.

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