Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
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The Flora and Vegetation Distribution in Dokdo

독도(동도)의 식물상과 식생분포

  • Kim, Myung-Hyun (National Institute of Agricultural Science and Technology) ;
  • Oh, Young-Ju (National Institute of Agricultural Science and Technology) ;
  • Kim, Chang-Seok (National Institute of Agricultural Science and Technology) ;
  • Han, Min-Su (National Institute of Agricultural Science and Technology) ;
  • Lee, Jeong-Taek (National Institute of Agricultural Science and Technology) ;
  • Na, Young-Eun (National Institute of Agricultural Science and Technology)
  • Published : 2007.03.27
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Abstract

This study aims to investigate the flora and the vegetation of Dokdo (Dongdo). The vegetation types were investigated by the Z-M school method. A total of 44 vascular plant taxa belonging to 24 families, 41 genera, 36 species, and 11 varieties are recognized in Dongdo, Dokdo. In this study, we confirmed four species, Chenopodium serotinum, Chelidonium majus var. asiaticum, Bromus japonicus, Elymus sibiricus, that had not been previously reported. The biological type of Dokdo was determined to be $Th-D_4-R_5-e(b)$ type. Two main vegetation groups which were established in a rocky area with little soil development and in a developed soil layer, along the development of soil layer have been distinguished and classified into five communities. The former was composed of 1 community; Aster spathulifolius-Sedum oryzifolium community. The latter was composed of 4 communities; Agropyron tsukusiense var. transiens community, Festuca rubra-Artemisia japonica ssp. littoricola community, Miscanthus sinensis community, and Artemisia princeps community.

독도는 한반도와는 다른 기후와 토양특성으로 인하여 독특한 식물상 및 식생군락이 발달되어 있다. 따라서 본 연구에서는 현재 독도에 서식하고 있는 식물종을 밝히고, 이들 식물들이 형성되어있는 상황을 식물사회학적으로 조사하여 분석하였다. 그 결과 독도(동도)에서 24과 41속 36종 8변종 총 44종류가 확인되었다. 본 조사에서 참새귀리 및 개보리, 좀명아주, 애기똥풀 4종이 새롭게 확인되었다. 동도의 식생군락은 개밀군락, 왕김의털-갯제비쑥군락, 참억새군락, 쑥군락, 해국-땅채송화군락으로 구분되었다. 이들 군락들 중에서 독도의 전역에 걸쳐서 토양 발달이 거의 이루어져 있지 않은 지역에 분포하고 있는 해국-땅채송화군락만이 독도의 원식생으로 판단된다. 하지만, 현재 독도에는 외부 토양의 유입 및 외부인들의 출입 통에 의해서 개밀군락이 만연하고 있는 실정에 있다. 앞으로 이와 같은 행위들이 계속적으로 이루어진다면, 독도에 새로운 식물종의 유입은 물론 새로운 식생유형으로의 변화도 일어날 수 있을 것으로 판단된다.

Keywords

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