• 제목/요약/키워드: dune vegetation

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Distribution of Phytolacca americana in a coastal sand dune

  • Min, Byeong-Mee
    • Journal of Ecology and Environment
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    • 제37권2호
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    • pp.81-90
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    • 2014
  • This study examined the main factors affecting the distribution of Phytolacca americana, an exotic plant species in Korea, in coastal sand dunes. The areas examined from June 2004 to February 2006 were in Sindusagu where was located on Sindu-ri, Wonbuk-myen, Taean-gun, Chungcheongnam-do. The vegetation, sediment properties, sizes and ages of Robinia pseudoacacia, P. americana and Pinus thnunbergii and spatial distribution of P. americana were assessed. Firstly, correlation coefficients (CC) between P. americana's root biomass and sediment properties were not significant. Secondly, of the four community types, P. americana was not in the mixed herbaceous community and its density was the highest in the P. thunbergii-R. pseudoacacia and R. pseudoacacia community The Poisson distribution analysis revealed the distribution of P. americana to be severely clumped. The root biomass of P. americana and the basal area of R. pseudoacacia were significantly correlated, but the CCs between P. thunbergii and other two species were not significant. The ages of P. americana and R. pseudoacacia in a quadrat were significantly correlated. Thirdly, P. americana's ages in a quadrat were mostly similar to each other. Therefore, the spatial distribution of P. americana was largely influenced by R. pseudoacacia but not by the sediment properties, and plants in a narrow area were concurrently germinated.

중국과 북한 접경지역 두만강 일대의 Flora에 대한 생태학적 연구 (Ecological study of the flora at Tumen river area, border of North Korea and China)

  • Ahn, Young-Hee
    • 한국환경과학회지
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    • 제12권2호
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    • pp.125-132
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    • 2003
  • This study was executed by China along with the Tumen river, which formed border of North Korea and China. As a result 91 family, 282 genera, 363 species, 57 variety 4 species, total 424 taxa of vascular plants were identified. The examination area was include the region that had various vegetation such as upper swampy land, seashore dune, a river, a high mountain grassy plain, deciduous tree zone, evergreen coniferous forest zone. The followings are representative plants, which found in an examination area but not in South Korea. Picea koraiensis, Larix gmelini var. principis-ruprechtii, Betula playphylla, Ulmus pumila, Populus koreana, Ledum palustre var. diversipilosum, Rhododendron parvifolium, Salix brachypoda, Phacelurus latifolius, Carex gotoi, Carex capricornis, Calla palustris, Aquilegia flabellata var. pumila, Lilium davuricum, Astragalus membranaceus, Trifolium lupinaster, Ledebourieila seselodeds, Polemonium racemosum, Scutellaria baicalensis, Linnaea borealis, Thladiantha dubia, Inula helenium, Trollius hondoensis, Hypocaeris ciliata, Aconitum kirinense, Aconitum arcuatum, Potentilla viscosa var. macrophylla. And there are 21 rare and endangered species, which Korean Forest Sevice designated, such as Aconitum koreanum, Acorus calamus var. angustatus, Polygonatum stenophyllum, Drosera rotundifolia, Iris setosa, Jeffersonia dubia, Lilium davuricum, Lilium cernum, Paeonia obovata, Penthorum chinense, Phacelurus latifolius, Rosa marretii, Sparganium stoloniferum, Thymus quinquecostatus, Trillium tschonoskii, Utricularia japonica, Tripterospermum japonicum, Vaccinium uliginosum, Vaccinium vitis-idaea, etc. Especially, plants like, Acanthopanax senticosus, Jeffersonia dubia and Lillum cernum which have high values of ornamental, and medical use are in an extinction crisis. High swampy land was formed to upper stream of Tumen river. It showed representative vegitation, like Carex sp., Scirpus radirans, Eriophorum latifolium. Wetlands plant and a dune plant were mixed in down stream area of Tumen river. On a dune, seashore plants, such as Carex kobomugi, Salsola collina, Raphanus sativus var. raphanistroides, Rosa rugosa, Scutellaria strigillosa, Linaria japonica, Phacelurus latifolius were appeared frequently.

태안군 신두리 해안사구의 식생과 토양특성 (Vegetation and Soil Properties of the Coastal Sand Dune in Sinduri, Taean Gun)

  • 송호경;박관수;박혜림;서은경;소순구;김무열
    • 한국환경복원기술학회지
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    • 제8권6호
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    • pp.59-68
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    • 2005
  • This study was carried out to investigate soil properties, ordination, and vegetation of the coastal sand dune in Sinduri, Taean-Gun. 1. The Orobanche coerulescens and Ixeris repens that are a peculiar species were found in Sinduri coastal sand dune and the Salix purpurea var. japonica that is an endemic species of korea was found in that place. The plant communities was categorized into seven groups, such as Rosa rugosa community, Vitex rotundifolia communit, Carex kobomugi community, Imperata cylndrica var. koenigii community, Carex pumila community, Artemisia capillaris community, and Calamagrostis epigeios community. 2. The soil organic matter, total nitrogen, available phosphorous concentrations, and cation exchange capacity were lower in the study sites than in forest soil of seashore. There was little difference in soil exchangeable Ca, Mg, and K concentrations between in the study site and in the forest soil of seashore. The soil pH was ranged from 5.69 to 7.63. The soil texture in the study site was sand or loamy sand. 3. The results of the correlation between Sinduri coastal sand dune community and environmental factor are as follows; the soil pH was the most effect to the community distribution, and CEC, total nitrogen, soil organic matter, and the amount of silt in soil have some correlation with community distribution. 4. The results of the correlation between Sinduri coastal sand dune community and soil characteristics are as follows; the Calamagrostis epigeios community was found in area that have high soil moisture content; the Rosa rugosa community was found in area that have high soil CEC, organic matter concentration, and total nitrogen concentration, and low soil pH; the Vitex rotundifolia community, Carex kobomugi community, and Artemisia capillaris community were found in area that have low soil CEC, organic matter concentration, and total nitrogen concentration, and high soil pH; the Imperata cylndrica var. koenigii community and Carex pumila community were found in area that have medium soil CEC, organic matter concentration, total nitrogen concentration, and soil pH.

낙동강 하구역 진우도 자연해빈의 지하수위 변동해석 (Analysis of Ground Watertable Fluctuation at the Sandy Barrier Island on Jinu-do in Nakdong River Estuary)

  • 박정현;윤한삼;이인철
    • 해양환경안전학회지
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    • 제20권4호
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    • pp.382-388
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    • 2014
  • 본 연구는 낙동강 하구역의 사주섬 중 최서측에 위치하는 진우도를 대상으로 실험구를 구축한 후 해안선의 법선 방향으로 관측점 5곳을 선정하여 2012년 3월부터 2013년 1월까지 약 11개월간 관측된 수온, 전기전도도, 압력값을 이용하여 지하수위 변동해석을 하였다. 1) 지하수위의 수온, 염분, 수위변동과 조위, 파랑, 강수량 등의 외력조건과의 시계열 분석 및 상관분석을 통하여, 소상대 정점에서는 파랑 및 조위의 영향, 식생 및 모래지반 정점에서는 강수량 및 조위의 영향을 크게 받음을 알 수 있었다. 2) 고파랑내습시 관측점간의 지하수위 및 전기전도도의 공간적 거동을 살펴본 결과 사구(Sand dune) 및 식생대(Vegetation zone)가 시작되는 지점에서 담수층과 해수층의 천이 영역(Transition zone)이 존재하였고, 진우도 남측을 기준으로 해안선에서 50~70 m 사이에 위치함을 알 수 있었다.

제주도 사계 해안사구의 식생과 식물상 (Vegetation and Flora of Sagye Coastal Sand Dunes on Jeju Island)

  • 강선탁;오홍식
    • 한국환경생태학회지
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    • 제38권1호
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    • pp.1-21
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    • 2024
  • 본 연구는 우리나라 최남단에 위치한 제주특별자치도 사계 해안사구의 식생에 따른 군락분포와 식물상을 파악하기 위해 수행되었다. 연구는 2020년 4월부터 2021년 10월까지 총 20회에 걸쳐 이루어졌다. 연구 결과, 상관식생형은 해안 염습지식생, 해안정선 일이 년생 초본식생, 해안사구 초본식생, 해안사구 관목식생, 임연식생, 인공조림식생 6개의 상관식생형으로 분류되었다. 군락은 43개 군락이 분포하며, 전체 출현 식물은 62과 166속 191종 15변종 3아종 3품종으로 총 212분류군이 분포하는 것으로 조사되었다. 환경부지정 멸종위기 II급 식물인 대홍란을 포함하여 희귀식물 5분류군이 분포하는 것으로 나타났으며, 식물구계학적 특정 식물종은 V등급 2분류군, IV등급 5분류군, III등급 15분류군, II등급 14분류군, I등급이 19분류군으로 조사되었다. 기후변화 생물 지표종은 지표종 11종 후보종 2종이 분포하여 전체 지표종의 33.3%, 후보종은 15.4%로 높은 비율을 보였다. 귀화식물은 16과 43속 52분류군으로 귀화율 21.1%이며, 도시화지수는 24.5%로 높게 나타났다. 이러한 결과는 향후 해안사구의 기후변화에 따른 생물다양성의 보전과 관리 방안을 마련하는 데 필요한 자료로 널리 활용될 것이 기대된다.

우리나라 해안사구 분포 현황과 기능특성에 관한 고찰 (Review of the Functional Properties and Spatial Distribution of Coastal Sand Dunes in South Korea)

  • 윤한삼;박소영;유창일
    • 수산해양교육연구
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    • 제22권2호
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    • pp.180-194
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    • 2010
  • Coastal sand dunes are dynamic and fragile buffer zones of sand and vegetation where the following three characteristics can be found: large quantities of sand, persistent wind capable of moving sand, and suitable locations for sand to accumulate. The functional properties of coastal sand dunes include the roles in sand storage, underground freshwater storage, coastal defense, and ecological environment space, among others. Recently, however, the integrity of coastal dune systems has been threatened by development, including sand extraction for the construction industry, military usage, conversion to golf courses, the building of seawalls and breakwaters, and recreational facility development. In this paper, we examined the development mechanisms and structural/format types of coastal sand dunes, as well as their functions and value from the perspective of coastal engineering based on reviews of previous researches and a case study of a small coastal sand dune in the Nakdong river estuary. Existing data indicate that there are a total of 133 coastal sand dunes in South Korea, 43 distributed on the East Sea coast (32 in the Gangwon area, and 11 in Gyeongsangbuk-do), 60 on the West Sea coast (4 in Incheon and Gyeonggi-do, 42 in Ghungcheongnam-do, 9 in Jellabuk-do, and 5 in Jellanam-do), and 30 on the South Sea coast (16 in Jellanam-do, 2 in Gyeongsangnam-do, and 12 in Jeju).

Estimating the Population Size and Spatial Distribution of Three Scarites Species (Carabidae) in Sohwang Coastal Sand Dune Habitats, Boryeong, Korea

  • Do Sung Kim;Hyun Jung Kim
    • Proceedings of the National Institute of Ecology of the Republic of Korea
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    • 제4권1호
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    • pp.1-8
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    • 2023
  • In this study, we aimed to quantify the population size and spatial distribution of three predatory Scarites species in coastal sand dunes. In June and August 2014, 252 pitfall traps were utilized to conduct a trapping web analysis at three distinct sites with varying vegetation dominance values. Scarites sulcatus had the largest estimated population in a 10 m2 area with a habitat density of 36.6 in a Vitex rotundifolia community area (site B) in the June survey. In contrast, Scarites aterrimus had the largest population size with a habitat density of 2.9 in a Calystegia soldanella community area (site A) in the August survey. Spatial distribution analysis revealed that S. sulcatus dominated the Vitex rotundifolia community without preference for a particular site, whereas S. aterrimus and Scarites terricola pacificus were primarily observed on the beach. The results indicated that the three Scarites species in the Sohwang coastal sand dune region exhibited differences in their spatial and temporal distributions in the coastal dune ecosystem in order to avoid competition and predation. In conclusion, our findings can be utilized to estimate the population density of the genus Scarites on the Korean Peninsula. The outcomes of this study will contribute to estimating insect population densities on the Korean Peninsula and developing investigative assessment methodologies.

태풍의 통과로 인한 해안사구 지형의 침식과 회복 (Erosion and Recovery of Coastal Dunes after Tropical Storms)

  • 최광희;정필모;김윤미;서민환
    • 한국지형학회지
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    • 제19권1호
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    • pp.17-27
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    • 2012
  • 해안사구는 사빈과의 상호작용을 통하여 해안경관을 안정시키고 배후지를 방어한다. 때때로 태풍이 통과할 때 사구가 침식되기도 하지만, 시간이 지나면 원래의 지형을 회복한다. 2010년 9월초에 발생한 태풍 곤파스는 많은 비를 동반하며 폭풍과 파고를 증가시켜 해안지역에 수위를 상승시켰다. 이로 인해, 서해안에 분포하는 사구들이 피해를 입었다. 하지만 침식이나 회복과정은 전안과 사구전면부의 경사, 모래의 공급량, 식생, 바람, 인간의 간섭 등 해빈-사구를 둘러싼 환경에 따라 차이가 있었다. 어떤 사구들은 겨울철 풍성활동에 의해 원래의 단면을 회복했지만, 어떤 사구들은 점점 더 육지 쪽으로 후퇴하였다. 곰솔림이 조성된 해안사구는 초본피복사구에 비해 회복이 더딘 것으로 나타났다. 또한 인공호안이 설치된 사구는 그렇지 않은 사구에 비해 더 심하게 침식되고 덜 회복되었다. 태풍 통과 이후의 조사결과, 모래의 이동과정이 침식된 사구 지형회복에 가장 중요한 역할을 한 것으로 나타났다. 따라서 태풍에 의한 침식극복을 비롯하여, 사구의 효과적인 관리를 위해서는 지형학적 관점에서 사빈과 사구의 상호작용을 적절하게 평가해야 한다.

Distribution and current vegetation of Cakile edentula, an invasive alien species in Korea

  • Ryu, Tae-Bok;Choi, Dong-Hui;Kim, Deokki;Lee, Jung-Hyo;Lee, Do-Hun;Kim, Nam-Young
    • Journal of Ecology and Environment
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    • 제42권3호
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    • pp.120-127
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    • 2018
  • Background: Cakile edentula (Bigelow) Hook. is a successful invader that has been propagating globally. In Korea, Cakile edentula was found in 2008 for the first time, in the east coast of Korean peninsula. Based on site surveys conducted thereafter, Cakile edentula has propagated in the east coast from Goseong to Jeongdongjin, Gangneung and in the west coast of city of Hwaseong of Gyeonggi-do Province, and Taeangun County of Chungcheongnam-do Province. Results: Cakile edentula has infiltrated into four different vegetation communities (syntaxa) (Calystegio soldanellaeSalsoletum komarovii Ohba, Miyawakiet Tx.1967; Elymo-caricetum Kobomugi Miyawaki 1967; Carex pumila; and Calystegia soldanella) belonging to phytosociological classes of saltwort (barilla) and coastal glehnia. Cakile edentula competes with dominant species such as the saltwort (barilla) and beach morning glory, causing qualitative changes in species composition. It also affects local ecosystems through its competition with indigenous species, causing destruction of the traditional landscape. Conclusions: However, competition of Cakile edentula with indigenous species and the resulting replacement of such species are limitedly reported. Potential competitors with Cakile edentula have not been found yet. In Northeast Asia, qualitative changes realized in local ecosystems due to invasion of Cakile edentula are significantly noticeable. These necessitate proper controls for this invasive alien species to protect and preserve coastal dune areas.