• Title/Summary/Keyword: 신두리 해안

Search Result 24, Processing Time 0.028 seconds

Analysis of Geomorphological Changes using RS and GIS techniques in Shinduri coastal dunefield (원격탐사와 GIS 기법을 이용한 신두리 해안사구지대의 지형변화 분석)

  • Seo, Jong-Cheol
    • Journal of the Korean association of regional geographers
    • /
    • v.8 no.1
    • /
    • pp.98-109
    • /
    • 2002
  • The long term land-cover changes and the pattern of morphological changes in foredune ridges and unvegetated dunes were investigated for about 30 years through analysing aerial photographs in Shinduri coastal dunefield, Korea. As a result, forested dune area increased while unvegetated dune area decreased continuously since 1967. Foredune ridges retreated landward about 80m away from the former coast-line in the middle part while they advanced seaward after construction of dike in the northern part during last 3 decades. Unvegetated dunes in the middle part of the dunefield were eroded at seaward side and moved landward away. These facts mean not only coastal dune area has been affected by man-made effects such as afforestation and coastal developments but also shinduri coastal dune area has been stabilized by plants and has been negative sediment budget.

  • PDF

Morphological Changes of the Beach and Foredune by Sand Fences - A Case of Shindu Coastal Dune Area - (사구울타리 설치 후 해빈과 전사구의 지형 변화 - 신두리 해안사구를 사례로 -)

  • SEO, Jong Cheol
    • Journal of The Geomorphological Association of Korea
    • /
    • v.17 no.1
    • /
    • pp.85-93
    • /
    • 2010
  • After the notorious Taean Oil spill in Dec. 2007, a series of sand fences made of fishing net were installed in front of foredune in Shindu dune area. This paper aims to understand the temporal and spatial characteristics of morphological changes of the beach and foredune. About 1m high sand accumulated around sand fences for the last 2 years. While a lot of sand deposited during the winter season (from autumn to spring), small amount of sand eroded and deposited during summer season (from spring to autumn) without big morphological changes. These results mean that sand fences help nature deposit sand near beach and foredune area.

Distribution of Benthic Macrofauna in subtidal area and on sand flat of Sindu-ri coast, Korea (신두리 해안의 조하대와 모래 갯벌에 서식하는 대형저서동물의 분포)

  • Koo, Bon Joo;Shin, Sang Ho;Woo, Han Jun
    • Journal of Wetlands Research
    • /
    • v.7 no.2
    • /
    • pp.69-88
    • /
    • 2005
  • Distribution of benthic macrofauna was surveyed in the subtidal area and on the sand flat of Sindu-ri coast during July 2002. A total of 134 species, 3,511 individuals and 388g biomass of macrobenthos were sampled inclusively from the study sites. 109 species with a mean density of $1,298ind./m^2$ and biomass of $69.4g/m^2$ were collected from 10 stations established in the subtidal area. Polychaetes were represented as a dominant faunal group of the subtidal area in both species richness and density with values of 54 species and $813ind./m^2$. Cluster analysis based on the faunal composition showed that the subtidal area could be divided into four stational groups according to sedimentary characteristics: Cirrophorus armatus - Lumbrineris longifolia association on the mud sediment with pebbles near aqua-farms; Aonides oxycephala association on the rocky bed; Scoloplos armiger - Grandifoxus cuspis association on the sand-dominated sediment along the lowest low water; a association with higher evenness on the sand-dominated sediment in the depth. Although having characteristics of high value in species richness, density and species diversity, the macrobenthic association around the farming area was dominated by the opportunistic species such as Lumbrineris longifolia and Tharyx sp. Natural community represented by S. armiger and G. cuspis was developed in most sand-dominated areas. 50 species were sampled with a mean density of $2,443ind./m^2$ and biomass of $381.3g/m^2$ from eight+ stations along two transects on Sindu-ri sand flat. Mollusks were represented as a dominant faunal group of the sand flat in species richness, density and biomass with values of 20 species, $1,345ind./m^2$ and $350.4g/m^2$, respectively. Umbonium thomasi, Veneridae sp., Mandibulophoxus mai, Armandia lanceolata, Eohaustorius spinigerus, Urothoe convexa were dominant species and these species accounted for over 83% of total individuals. There were three distinct zones of macrobenthos on Sindu-ri sand flat according to the extent of exposure time. The upper zone was dominated by Scopimera globosa, the middle zone was characterized by M. mai, and the lower zone was dominated by E. spinigerus. Sindu-ri coastal area was considered as a healthy habitat for macrobenthos, except for around the farming area. It was considered that Sindu-ri coastal area including the sand flat connected to the sand dune of natural monument was a valuable habitat as a protected site in having no pollution source and no artificial structure.

  • PDF

Endophytic Fungal Diversity Associated with the Roots of Coastal Sand-dune Plants in the Sindu-ri Coastal Sand Dune, Korea (신두리 해안사구에 자생하는 사구식물 내생진균의 다양성 분석)

  • You, Young-Hyun;Seo, Yeonggyo;Yoon, Hyeokjun;Kim, Hyun;Kim, Ye-Eun;Khalmuratova, Irina;Rim, Soon-Ok;Kim, Changmu;Kim, Jong-Guk
    • Microbiology and Biotechnology Letters
    • /
    • v.41 no.3
    • /
    • pp.300-310
    • /
    • 2013
  • The coastal sand-dune plants of eight species; Argusia sibirica, Calystegia soldanella, Elymus mollis, Lithospermum zollingeri, Raphanus sativus, Salsola collina, Zoysia macrostachya, and Zoysia sinica were collected from the Shindu-ri coastal sand dune. Ninety-eight endophytic fungal strains were isolated from the roots of these plants, analyzed, and identified by sequences in their internal transcribed spacers (ITS) at the ITS1, 5.8S, and ITS2 regions. The diversity of endophytic fungi isolated from coastal sand-dune plants was confirmed with various diversity indices. The fungal strains belonged to thirteen orders: Capnodiales (3.09%), Eurotiales (70.10%), Glomerellales (1.03%), Helotiales (3.09%), Hypocreales (9.28%), Mortierellales (2.06%), Onygenales (1.03%), Ophiostomatales (1.03%), Pleosporales (1.03%), Polyporales (1.03%), Russulales (1.03%), Saccharomycetales (2.06%), and Xylariales (1.03%). Of the endophytic fungal strains collected, Penicillium (59.18% in Eurotiales) and Fusarium (5.10% in Hypocreales) were the most abundant in coastal sand-dune plants. The endophytic fungal strains isolated from C. soldanella were more diverse compared to strains from the other coastal sand-dune plants.

Spatial Distribution of Nutrients from Sea Water and Aeolian Sands in Coastal Dunefield, Sindu-ri, Korea (해수와 해빈 모래 기원 영양소의 공간적 분포 - 신두리 해안사구 지대를 대상으로 -)

  • 김대현;박수진;유근배
    • Proceedings of the KGS Conference
    • /
    • 2004.05a
    • /
    • pp.36-36
    • /
    • 2004
  • 전통적으로, 토양은 식생의 분포를 결정짓는 중요한 변수로서, 생태 시스템의 보존과 관리를 위해서는 토양의 성질과 그 공간적 분포에 대한 이해가 선행되어야 한다고 알려져 왔다. 특히, 기질(substrate)이 사질 입자로 구성된 해안사구 생태 시스템은 영양소의 자체적인 생산이 충분하지 못하므로, 외부로부터 유입되는 영양소가 식생의 진입과 서식을 위한 필수적인 요소이다. (중략)

  • PDF

Mid- to Late Holocene Progradational Pattern of Shinduri Dunefield: Implications for Sea Level and Climatic Changes in the Western Coast of Korea (홀로세 중기 이후 신두리 해안사구의 성장 : 기후변화 및 해수면 변동과의 관련 가능성)

  • HONG, Seongchan;CHOI, Jeong Heon;KIM, Jong Wook
    • Journal of The Geomorphological Association of Korea
    • /
    • v.17 no.2
    • /
    • pp.87-98
    • /
    • 2010
  • There have been growing concerns for the sea level rise due to global warming in recent years. Sea level rise is a serious problem to densely populated coastal areas, because it may affect the coastal landforms to be damaged. Especially coastal sand deposits like coastal dunes are more sensitive than the other coastal landforms. In this paper, Ground Penetrating Radar (GPR) and Optically Stimulated Luminescence (OSL) dating method were used to identify the Holocene geomorphic changes of coastal dune field in Shinduri located at the western coast. The main results in this study that are the dunefield in the study area may have begun to form at around 6.8 ka and it has grown seaward thereafter. Then, dunefield appears to have extensively developed since 3.7 ka. This result, together with previous works on the sea level and climatic changes in the western coast of Korea suggest that the dunefield has been affected by the sea level regression since the Holocene high stand in the Holocene at around 6 ka and climatic change from warm and humid to cold and dry conditions occurred at 4.5 ka.