• Title/Summary/Keyword: 해안사구

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The Coastal Geomorphology in General of Korea - Research Trends and Issues - (한국의 지형학 연구 - 해안지형 일반 -)

  • Kim, Sung Hwan
    • Journal of The Geomorphological Association of Korea
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    • v.19 no.1
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    • pp.1-15
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    • 2012
  • The purpose of this study is to review research trends and issues of coastal geomorphology in general of Korea, which is divided into two periods; the former and later periods of 1990s when The Korean Geomorphological Society was established. In this study, coastal geomorphology in general refers to the landforms except tidal flats and coastal terraces. The descriptive statistics of research papers published in 5 major geography journals since 1990s were computed and these papers were classified according to their main subjects. The methodology for coastal landform study was analyzed by sub-fields of landform change and sediment analysis. The study of coastal geomorphology in Korea started from around 1970s and has progressed significantly in terms of the scope and the number of papers published since 1990s. There is few paper published in 1990s on coastal geomorphology in general, but so many research has achieved and came to be the major part of coastal geomorphology study since 2000s. Further methodology is necessary for morphodynamics study in the future.

The Flora of Coastal Sand Dune area in Gyeongsangbuk-do (경상북도 해안사구 일대의 식물상)

  • Park, Seon-Joo;Park, Seong-Jun;Son, Sung-Won
    • Korean Journal of Environment and Ecology
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    • v.23 no.5
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    • pp.392-410
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    • 2009
  • The vascular plants recorded from the 11 sites of coastal sand dune in North Gyeongsang Province are as follows: 204 taxa, 2 hybrids, 1 form, 22 varieties, 1 subspecies, 178 species, 132 genera, 43 families. These areas also present rare plant (Glehnia littoralis); 20 taxa, 20 species, 20 genera, and 15 families of floristics special plants; 46 taxa, 2 variety, 44 species, 30 genera, and 12 families of naturalized plants. The ratio of urbanization and naturalized index is 16.14% and 22.55% respectively. Life form spectrum is Th-$R_5-D_4$-e type. The number of species recorded from the coastal sand dune in Hujeong area turned out to be the highest (44.6%), and the coastal sand dune in Heseo area showed the highest naturalized index (31.58%).

Study on the Status and Socio-Economic Characteristics of Coastal Sand Dune in South Korea (우리나라 해안사구의 현황과 사회·경제적 특성 고찰)

  • Kang, Jihyun;Seo, Jongcheol;Rhew, Hosahng;Kim, Taesuk;Oh, Jeongsik;Lee, Jaeho;Oh, Sujeong;An, Sejin
    • Journal of The Geomorphological Association of Korea
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    • v.24 no.3
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    • pp.149-159
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    • 2017
  • Coastal dunes have many environmental and ecological socio-economic importances; various human activities, however, have impaired their structures and functions over the years. In 2016, environmental survey on coastal sand dune was carried out to report the present status and update the coastal sand dune list in 2001. This research analyzed the survey data in terms of geomorphological and socio-economic aspects. A list of the 189 coastal sand dune and information was updated by province. A 36.5% reduction in coastal sand dune area have been identified for using agricultural land, development area since the approximately 1940-50s. Development area in coastal sand dune covered small area as 5%, the use intensity was relatively hard. Furthermore, the difference by province also showed. Approximately 80% of the development area was concentrated in 20% of total sand dune several sand dune. It is generally accepted that coastal sand dunes were exposed high development pressure. However the result means that the general brief dose not apply for all sand dune. Therefore, characteristics of each sand dune should be analyzed and concerned the diverse management plans.

Geomorphological Characteristics and OSL Ages of the Moraeul dune in Daechoengdo Island, South Korea (대청도 모래울 사구의 지형 특성과 OSL 연대)

  • Choi, Kwang Hee
    • Journal of The Geomorphological Association of Korea
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    • v.27 no.4
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    • pp.1-11
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    • 2020
  • Coastal dunes play an important role in coastal defense. The Moraeul dune in Daecheongdo Island is representative in this regard. However, there is little knowledge, concerning the morphology, grain size, and formation timing of the dune. This study investigated the geomorphological characteristics of the Moraeul dune using topographic surveys, grain size analyses, and OSL dating. The dune was classified as 'single accreted foredune', which was developed under dense vegetation cover and efficient sand trapping. The dune consisted of fine to medium sand with 1.6Φ of mean grain size, and was covered with pine trees (> 100 years old). The samples from the upper part of the dune yielded quartz OSL ages ranging 0.5 ~ 0.7 ka. Therefore, it is likely that the dune developed at least before the Little Ice Age and became what it is today about one century ago.

Growth Properties of Carex kobomugi Ohwi (통보리사초(Carer kobomugi Ohwi)의 생육 특성)

  • Min, Byeong-Mi
    • The Korean Journal of Ecology
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    • v.27 no.1
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    • pp.49-55
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    • 2004
  • To verify growth properties of Carex kobomugi, above and belowground parts of C. kobomugi were surveyed on coastal sand dune at Sinduri, Choongnam Province from April, 2001 to June 2003. The results were the same as follows. In coastal sand dune, C. kobomugi followed Elymus mollis from mean high tide line. Density of C. kobomugi was the highest at unstable sand dune and 150 plants/㎡. And rates of flowering plant were 70% at unstable area and 10% at stable area. C.kobomugi is thus plant that adapted to unstable sand dune. Shoot distributed irregularly. The rhizome of C. kobomugi gradually decreased with the soil depth in unstable area, but mainly distributed to 20 ㎝ depth. New rhizome could be generated from the rhizome which was below 150 ㎝ depth or 5 years old. The number and length of new rhizome were related to biomass of previous year's shoot. That was, shoots which were below 0.5 and over 3 g/shoot in dry weight generated 1 and 5 rhizomes, respectively. And the mean lengths of rhizome from small (below 0.5 g) and large (over 3.0 g) shoots were 13.0 ㎝ and 57.6 ㎝, respectively.

Studies on the Characteristics of Vegetation and Plant Diversity of Coastal Sand Dune in Busan Metropolitan City (부산광역시 해안사구의 식물다양성과 식생 특성)

  • Park, Ji-Won;Lee, Seung-Yeon;Lee, Eung-Pill;Kim, Eui-Joo;Park, Jae-Hoon;Lee, Jung-Min;Kim, Min-Joo;No, Jae-Yeong;Han, Dong-Uk;You, Young-Han
    • Journal of Wetlands Research
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    • v.22 no.2
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    • pp.66-72
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    • 2020
  • The coastal sand dunes have transitional characteristics of marine and inland ecosystems, and they have abundant biodiversity. This study investigated flora and vegetation and analyzed the landscape structure at seven beaches in Busan metropolitan city. As a result, the vascular species of the coastal sand dunes in Busan were identified as 178 taxa of 140 families. Vegetation landscape was damaged to the extent that no natural vegetation was found in 4 of 7 beaches (57%). The coastal dune vegetation was dominated by the Carex pumila community and Carex kobomugi community. The halophyte and invasive alien species were classified into 18 taxa (10% of all species) and 40 taxa (22% of all), respectively. The vegetation that made up the largest area was the Phragmites communis community of the salt marsh, and the species number of halophyte increased as the wetland area increased. This means that the maintenance and management of salt marshes is important to conserve the unique plant diversity of the region.