• Title, Summary, Keyword: 염생식물

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Traits of Water Level Control by Sluice Gates and Halophyte Community Formation in Saemangeum (새만금 배수갑문 수위조절 특성과 염생식물 군락지 형성에 관한 연구)

  • Sin, Myoung-Ho;Kim, Chang-Hwan
    • Korean Journal of Environment and Ecology
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    • v.24 no.2
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    • pp.186-193
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    • 2010
  • In order to examine the traits of sluice gate water control, halophyte community formation and their inter-relations in Saemangeum, both water level condition and halophyte community formation were analyzed periodically and spatially on the topographic map with Surfer, Saemageum Spatial Analysis System, and related field reports. The traits of water level condition are that average water level in the growing period of halophytes was similar to annual average water level, annual low level and high level appeared in the growing period, and water level was usually maintained within a range of -1.0m~0.5m above mean sea level, but it has changed more frequently year by year. Routine water level control, natural disaster prevention, construction, and civil appeal took major percentages of the reasons for sluice gate's opening and shutting. Since 2007, not only the overall control frequency of sluice gate but also its control frequency for construction and natural disaster prevention have increased outstandingly. Halophyte community had formed at a rate of 1,209ha/year in the 4,315 ha land in 2008, 6.3 times larger than in 2005, and 2,382 ha above around 1.0m was estimated to be artificially vegetated, 89.1 % of the 2,673ha-size sown area. High water level was found to be a more possible determinant than average water level or low water level in halophyte community formation and it was thought to be secondary factors whether tillage was conducted or/and whether surface sealing formed.

Floristics of Halophytes and Hydrophytes in the Jungseonpo, Gwingok, and Gwangyangseo Rivers (중선포천, 관곡천, 광양서천에서 염생식물과 수생식물상 분포)

  • Huh, Man Kyu
    • Journal of Life Science
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    • v.30 no.2
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    • pp.186-190
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    • 2020
  • Halophytes are physiologically adapted to withstand the high salinity of water and saline soil. This study was conducted to elucidate the distribution of halophytes and hydrophytes in the Jungseonpo River (Sacheon-ci, Gyeongsangnam-do), Gwingok River (Hadong-gun, Gyeongsangnam-do), and Gwangyangseo River (Gwangyang-ci, Jeollanam-do) in Korea. A total of six species of halophytes and ten species of hydrophytes were collected in the Jungseonpo River. Halophytes in the Gwingok River and Gwangyangseo River numbered five species and 11 species, respectively. Hydrophytes in the Gwingok River and the Gwangyangseo River numbered 13 species in five families and 16 species in eight families, respectively. Of these, Phacelurus latifolius, endemic to the west and south coast of Korea, is an endangered species in the context of investigating the ecology and conservation of halophyte species. Many individual halophyte species have been diminished due to reduced habitable area caused by sand dune destruction. The rivers in the three areas on the south coast were also different in terms of distribution of salt plants due to regional differences, and they were all different from the well-developed west coast. Seven species, including Rosa wichuraiana, have been added to South coasts compared to past records.

Changes in Flora Dynamics on the Reclaimed Tidal Flats of Kyonggi-Bay in the Mid-west Coast of Korea (우리나라 중서부 해안 경기만 간척지에서 식생변화)

  • Kim, Eun-Kyu;Jung, Yeong-Sang;Chun, Soul;Joo, Young-K.;Jeong, Hyeung-Geun
    • Korean Journal of Soil Science and Fertilizer
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    • v.42 no.4
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    • pp.289-300
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    • 2009
  • Flora distribution was surveyed in the newly reclaimed tidal flats in the west coastal area in Korea to understand changes in flora dynamics after reclamation. The surveyed reclaimed tidal flats were the newly reclaimed tidal flat in Hangdam, the mid Kyonggi Bay in 2002, and three reclaimed lands in Seukmun and Daeho, Chungnam, and Hangdam in Kyonggi Bay, of which reclamation years based on embankment were 7, 9 and 18 years, respectively. In the newly reclaimed tidal flat, the dominant flora was Suaeda japonica and other florae were rare, while various halophytes and glycophytes were distributed in the reclaimed lands. On the newly reclaimed tidal flat, four species of halophytic pioneer florae, Salicornia europaea, Suaeda glauca, Suaeda japonica, and Suaeda maritime occurred, and along with age facultative halophyte and glycophyte occurred sequently. On the reclaimed lands, the florae were more complex with various facultative halophyte and glycophyte, so these were predominated rather than pioneer halophyte, while one of pioneer halophyte that Suaeda japonica was not occurred. Increasing of various facultative halophyte and glycophyte, and decreasing of pioneer halophyte indicated that flora changed toward to increase of facultative halophyte and glycophyte by aged after reclamation. On the newly reclaimed tidal flat the ratio of flora species changed rapidly with the invasion of plant. This implied that the flora had begun to change in the early stage of reclamation. Facultative halophyte and glycophyte started to increase on the early stage of reclamation but relative density and frequency of pioneer halophyte was higher than facultative halophyte and glycophyte. According to the investigation up to 3 years after reclamation, pioneer halophyte predominated on it. Although flora changed, there were common representative halophytes among the reclaimed tidal flats: Salicornia europaea, Suaeda maritima, and Suaeda glauca as pioneer halophyte, Aster tripolium, Sonchus brachyotus, and Phragmites communis as facultative halophytes.

Soil Salinity Influencing Plant Stands on the Reclaimed Tidal Flats of Kyonggi-Bay in the Midwestern Coast of Korea (우리나라 중서부 해안 경기만 간척지에서 식생 분포에 대한 토양 염도의 영향)

  • Kim, Eun-Kyu;Chun, Soul;Joo, Young-K.;Jung, Yeong-Sang
    • Korean Journal of Soil Science and Fertilizer
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    • v.42 no.4
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    • pp.280-288
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    • 2009
  • To identify controlling factors for spatial variation of vegetation in reclaimed tidal flats, plant stands were investigated in a newly reclaimed as well as three matured tidal flats, and a natural tidal flat in the midwest coast of Korea. Electrical conductivity of saturated soil extract (ECe) was measured to assess soil salinity. Soil salinity differed significantly among plant stands. Depending on soil salinity, plant species showed different niches: glycophyte predominated low saline spots, halophyte predominated high saline spots. Soil salinity for each plant habitats was in order of as follow: bare soil or plant wilted > mixed pioneer halophyte > pioneer halophyte > mixed with pioneer halophyte and facultative halophyte > mixed facultative halophyte > facultative halophyte > mixed with facultative halophyte and glycophyte > glycophyte > mixed glycophyte stands. These results suggested that plant distribution might have been influenced by spatial edaphic gradient (soil salinity), and thus it could be utilized as an indicator for field soil salinity gradient. Relationship between soil salinity and plant distribution was not different among the aged reclaimed tidal flats, suggesting that the vegetative population might have changed into a similar direction since the reclamation.

Analyzing Spectral Characteristics of Salt Marsh Vegetation Around Donggumdo Tidal Flat in Ganghwado, Korea (강화도 동검도 주변 조간대 내에 서식하는 염생식물의 분광특성 분석)

  • Lee, Yoon-Kyung;Eom, Jin-Ah;Ryu, Joo-Hyung;Won, Joong-Sun
    • Korean Journal of Remote Sensing
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    • v.23 no.6
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    • pp.575-581
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    • 2007
  • Suaeda japonica is the one of halophyte species which is widely spread in the Ganghwado tidal flat. Halophyte affects to the vertical development of wetland by enhancing the adhesion force of sediments. If demineralization of tidal flat proceeds, the colony of halophyte moves to the seaside where has relatively high salinity content. The change of halophyte zonation can be an environmental indicator to understand the landization of tidal flat. To interpret the spectral characteristics of halophyte, we measured the reflectance of suaeda japonica, reed and sediment around Donggumdo tidal flat in Ganghwado. First and second-derivation analysis was applied to these transformed spectra in order to identify which spectral ranges were distinguished with different coastal wetland vegetation and artificial structures. From the result, red reflectance peak of suaeda japonica were appeared at 600-650nm and greed reflectance peak of reed were appeared at 500-570nm. Spectra of sediments were continuously increased from 350-550nm without any absorption by chlorophyll. These reflectance were easily identified among the spectra of halophyte.

A Syntaxonomical Study on the Vegetation of Ruined Salt Field in Chonnam Province (전남 해안 지역에 분포하는 폐염전 염생식물의 군락분류학적 연구)

  • 양효식
    • The Korean Journal of Ecology
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    • v.22 no.5
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    • pp.265-270
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    • 1999
  • A syntaxonomical study about the vegetation of ruined salt field in Chonnam province was carried out and its soil properties were also determined. This study was accomplished by the methods of Mueller-Dombois and Ellenberg. This study was designed to clarify the syntaxonomical and synecological characteristics of the vegetation of ruined salt field in Chonnam province. The annual herbaceous halophyte communities of ruined salt field in Chonnam province were consisted of 5 communities: Salicornia herbacea community, Sueada japonica community, Sueada maritima community, Atriplex gmelini community, Spergularia marina community. And the perennial herbaceous halophyte communities of ruined salt field in Chonnam province were consisted of 3 communities: Aster tripolium community, Carex scabrifolia community, Phragmites communis community. The subsidiary knowledges of this study will make it possible to accumulate information on the distribution pattern of coastal salt marsh vegetation, and also will provide practical information for conservation of coastal ecosystems.

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Studies on the Community maintenance Mechanism of five Halophytes on the distribution in Mankyung River Estuary (만경강 하구역에 분포하는 수종 염생식물의 군집유지기작에 관한 연구)

  • Kim, Chang-Hwan;Jo, Du-Seong;Lee, Gyeong-Bo
    • Proceedings of the Korean Society of Environment and Ecology Conference
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    • pp.68-84
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    • 2005
  • The five halophytes was investigate on the maintenance community mechanism in the Mankyung river estuary salt marsh from Feb. 2005 to Sep. This study showed in the germination period, maximum germination rate, the standing biomass, length growth of stem and root in the five halophytes(Suaeda japonica, Salicornia herbacda, Aster tripolium, Atriplex gmelini and Suaeda asparagoides). These result suggested that maintenance mechanism of halphytes, Suaeda japonica was distributed in the low tidal marsh, Salicornia herbacda, Aster tripolium, Atriplex gmelini in the mid tidal marsh and Suaeda asparagoides in the high tidal marsh.

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Investigation of Intertidal Zone using TerraSAR-X: A Preliminary Result (TerraSAR-X를 이용한 조간대 관측: 초기결과)

  • Park, Jeong-Won;Lee, Yoon-Kyung;Won, Joong-Sun
    • Proceedings of the KSRS Conference
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    • pp.46-52
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    • 2009
  • TerraSAR-X 자료를 이용하여 고해상 X-밴드 SAR 시스템을 이용한 조간대 적용 가능성을 시험하였다 연구대상지역은 강화도 남단과 영종도를 잇는 조간대이며, 단일편파자료와 이중편파자료를 이용하였다. 연구내용은 다음과 같은 세 가지로 분류된다. 첫째, X-밴드 영상에서의 연안의 레이더 반사도 특성 연구 및 waterline 추출 정밀도를 평가하였다. 연안지역의 wateline은 HH 편광자료의 레이더 반사도 특성을 통하여 추출하였을 때 가장 신뢰도가 높았으며, TerraSAR-X 시스템의 짧은 파장과 높은 제도정밀도로 인하여 정밀한 지리좌표로의 변환이 가능하였다 연구지역의 조간대 지형 경사도는 평균적으로 수평방향으로 60m당 20cm의 고도변화를 가지므로, TerraSAR-X HH 편광자료를 이용한 waterline 추출은 정밀한 조간대 DEM 추출로 응용될 수 있다. 둘째, 이중편파자료의 편파특성을 이용한 조간대 염생식물의 산란특성 관측하였다. 조간대에서 수륙의 경계부에서 잘 관측되는 칠면초와 같은 염생식물은 해수면변화에 따른 조간대의 육지화를 모니터링 하는데 좋은 표적이 된다. TerraSAR-X 이중편파자료의 산란특성을 이용한 염생식물 관측결과는 2007년에 현장에서 취득된 실측자료와 비교하여 3dB 이내의 정밀도로 일치하였다 셋째, 단일편파 자료의 레이더 간섭기법을 이용한 조간대 DEM 작성 시도하였다. 조간대 내에서 육지화가 진행된 지역은 표면에 염생식물이 발달하였음에도 불구하고 높은 간섭긴밀도를 나타내었다. 레이더 간섭기법을 통한 DEM의 제작은 일반적인 조간대에서는 적용이 제한적이며, TanDEN-X의 적용이 필요하다.

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Endophytic Fungal Diversity Isolated from the Root of Halophytes in Taean Peninsula (태안반도에 자생하는 염생식물의 뿌리로부터 분리한 내생 진균의 다양성)

  • You, Young-Hyun;Lee, Myung-Chul;Kim, Jong-Guk
    • The Korean Journal of Mycology
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    • v.42 no.4
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    • pp.269-275
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    • 2014
  • Halophytes of seven species, Carex scabrifolia Steud., Limonium tetragonum Bullock, Salicornia europaea L., Suaeda glauca Bunge, Suaeda japonica Makino, Suaeda maritima Dumort., and Triglochin maritimum L. were collected from the Taean Peninsula. Thirty-seven endophytic fungi were isolated from the root of halophytes, and analyzed using the DNA sequences of internal transcribed spacers (ITS). The diversity of all endophytic fungi was analyzed using diversity indices. The endophytic fungi associated with the halophytes belonged to seven orders; Eurotiales (78%), Capnodiales (5%), Hypocreales (5%), Agaricales (3%), Corticiales (3%), Glomerellales (3%), and Pleosporales (3%). At the phylum level, the endophytic fungi were composed of Ascomycota and Basidiomycota. At the genus level, Alternaria, Aspergillus, Cladosporium, Paecilomyces, Penicillium, Phanerochaete, Schizophyllum, Talaromyces, and Verticillium were confirmed. Among them, Penicillium was the most abundant in the roots of the halophytes. This study analyzed the distribution and diversity of endophytic fungi on halophytes in the Taean Peninsula.

Population Formation Strategies of Halophytes in Mankyeong River Estuary (만경강 하구역에 분포하는 염생식물의 개체군 형성 전략에 관한 연구)

  • Kim Chang-Hwan;Cho Du-Sung;Lee Kyeong-Bo;Choi Song-Yuel
    • Korean Journal of Environment and Ecology
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    • v.20 no.3
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    • pp.299-310
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    • 2006
  • The germination period, the germination under different saline concentration and temperature condition, the survival percent several halophytes in cross-transplanting experiment of marsh type and the soil environment factor of five dominant species were investigated on the halophytes population formation strategies on the salt marsh of Mankyeong river estuary from February to October 2005. In terms of germination, Suaeda japonica appeared first followed by Aster tyipolium Salicornia herbacda, Atriplex gmelini and Suaeda asparagoides. The germination percent on the humidify conditions and saline concentrations of halophytes were that Suaeda japonica germinated well under inundation conditions, high temperature and low salinity; Salicornia herbacda under high salinity; Aster tripolium and Atriplex gmelini under dry or inundation conditions, and Suaeda aspar agoides under dry conditions and high salinity. The survival percent in cross-transplanting experiment of five halophytes were high with Suaeda japonica in the low marsh; Salicornia herbacda, Aster tripolium and Atriplex gmelini in the mid marsh, Suaeda asparagoides in the high marsh. The soil properties were similar for the five halophytes, but soil texture appeared high in order of silt, sand and clay. These results suggested that population formation strategies of five halphytes. Suaeda iaponica was distributed in the low tidal marsh, Salicornia herbacda, Aster tripolium, Atriplex gmelini in the mid tidal marsh and Suaeda asparagoides in the high tidal marsh.