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Vascular plant diversity and vegetation of Yokjido Island in Tongyeong-si, Korea

욕지도(통영시)의 식물다양성과 식생

  • Kim, Jung-Hyun (Plant Resources Division, National Institute of Biological Resources) ;
  • Jung, Eun-Hee (Exhibition and Education Division, National Institute of Biological Resources) ;
  • Lee, Kyeong-Ui (Institute of Ecosystem Survey) ;
  • Nam, Chun-Hee (Korea National Arboretum) ;
  • Park, Sung-Ae (Natural Environment Research Division, National Institute of Environment Research) ;
  • Park, Chan-Ho (Plant Resources Division, National Institute of Biological Resources) ;
  • Nam, Gi-Heum (Plant Resources Division, National Institute of Biological Resources) ;
  • Lee, Byoung Yoon (Plant Resources Division, National Institute of Biological Resources) ;
  • Suh, Min Hwan (Plant Resources Division, National Institute of Biological Resources)
  • 김중현 (국립생물자원관 식물자원과) ;
  • 정은희 (국립생물자원관 전시교육과) ;
  • 이경의 (자연환경조사연구소) ;
  • 남춘희 (국립수목원) ;
  • 박성애 (국립환경과학원 자연환경연구과) ;
  • 박찬호 (국립생물자원관 식물자원과) ;
  • 남기흠 (국립생물자원관 식물자원과) ;
  • 이병윤 (국립생물자원관 식물자원과) ;
  • 서민환 (국립생물자원관 식물자원과)
  • Received : 2016.02.05
  • Accepted : 2016.03.10
  • Published : 2016.03.31

Abstract

This study was carried out to investigate the flora and vegetation of Yokjido Island in Tongyeong-si, Korea. Vascular plants collected six times (from March of 2015 to January of 2016) were identified as 547 taxa in total, including 113 families, 354 genera, 487 species, four subspecies, 50 varieties, four forms and two hybrids. The first records from this region contained 314 taxa. In the flora of this area, endemic Korean species numbered eight taxa, and the red list of vascular plants according to the IUCN valuation basis numbered six taxa. In addition, 86 taxa of floristic regional indicator plants specially designated by the Ministry of Environment are included. Among the species investigated in this survey, 99 taxa were identified as specific species bio-geographically as compared floras of other terrestrial regions; 97 taxa of plants in southern areas and two taxa of limited distribution plants on the Korean Peninsula. In all, 74 naturalized plants were recorded in the investigated area. Samples of the forest vegetation of Yokjido Island were mainly classified as Pinus thunbergii community and the Alus firma community. Vertical structures of the communities were stable, and a DBH-class analysis showed that the dominant tree species would be maintained. If disturbance factors such as thinning could be halted, the composition of woody species and herbaceous species would change.

본 연구는 욕지도의 관속식물상과 식생을 밝히기 위하여 2015년 3월부터 2016년 1월까지 총 6회에 걸쳐 21일간 현지조사를 실시하였다. 관속식물은 113과 354속 487종 4아종 50변종 4품종 2교잡종의 총 547분류군으로 정리되었다. 이 중 기존의 조사에서는 발견되지 않았으나 본 연구에서 처음으로 밝혀진 분류군은 314분류군이었다. 한반도 고유종 8분류군, IUCN 평가기준에 따른 적색목록식물 6분류군, 식물구계학적 특정식물 86분류군이 조사되었다. 본 조사지에서 다른 지역에 비해 특이적으로 분포하는 식물은 99분류군이며, 이 중 남방계식물은 97분류군, 제한분포 식물은 2분류군이 확인되었다. 귀화식물은 74분류군이 발견되었다. 욕지도의 산림식생은 곰솔군락과 사방오리군락이 주를 이루는 것으로 나타났다. 군락의 수직구조는 안정적이었으며, DBH-class 분석 결과 교목층의 우점종이 유지될 것으로 나타났다. 간벌과 같은 교란인자가 제거되면 초본과 목본종의 구성은 현재와 다른 양상이 나타날 것으로 보인다.

Keywords

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