Korean Journal of Environment and Ecology (한국환경생태학회지)

Korean Society of Environment and Ecology (한국환경생태학회)
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Vegetation and Flora of Sagye Coastal Sand Dunes on Jeju Island

제주도 사계 해안사구의 식생과 식물상

  • Seon-Tak Kang (Faculty of science Education, Jeju National University, Jeju Special Self-Governing Province) ;
  • Hong-Shik Oh (Faculty of science Education, Jeju National University, Jeju Special Self-Governing Province)
  • 강선탁 (제주대학교 대학원 과학교육학부 ) ;
  • 오홍식 (제주대학교 과학교육학부 )
  • Received : 2023.10.16
  • Accepted : 2024.01.25
  • Published : 2024.02.28
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Abstract

This study conducted surveys to identify the distribution of communities and flora according to vegetation in the coastal sand dunes of Sagye in Jeju Special Self-Governing Province, located at the southernmost tip of Korea. The survey was conducted over 20 sessions from April 2020 to October 2021. As a result of the study, physiognomy was classified into six correlated vegetation types: plant communities on the salt marsh, annual communities on a coastal drift-line, herb communities on a dune, shrub communities on a coastal dune, forest-edge communities on a dune, and artificial afforestation vegetation. The survey identified 43 communities, and a total of 212 taxa were found to be distributed among 62 families, 166 genera, 191 species, 15 varieties, 3 subspecies, and 3 forma. It was found that there were five rare plant taxa distributed in the area, including the Cymbidium macrorrhizum which was classified as an endangered Class II plant by the Ministry of Environment. Floristic target species identified by the surveys included 2 taxa for grade V, 5 taxa for grade IV, 15 taxa for grade III, 14 taxa for grade II, and 19 taxa for grade I. Climate-sensitive biological indicator species included 11 indicator and 2 candidate species, representing a high ratio of 33.3% of all indicator species and 15.4% of candidate species. Naturalized plants included 16 families, 43 genera, and 52 taxa, with a naturalization rate of 21.1% and an urbanization index of 24.5%. It is expected that these results will be widely used as data needed to prepare conservation and management measures for biodiversity in response to climate change in coastal dunes in the future.

본 연구는 우리나라 최남단에 위치한 제주특별자치도 사계 해안사구의 식생에 따른 군락분포와 식물상을 파악하기 위해 수행되었다. 연구는 2020년 4월부터 2021년 10월까지 총 20회에 걸쳐 이루어졌다. 연구 결과, 상관식생형은 해안 염습지식생, 해안정선 일이 년생 초본식생, 해안사구 초본식생, 해안사구 관목식생, 임연식생, 인공조림식생 6개의 상관식생형으로 분류되었다. 군락은 43개 군락이 분포하며, 전체 출현 식물은 62과 166속 191종 15변종 3아종 3품종으로 총 212분류군이 분포하는 것으로 조사되었다. 환경부지정 멸종위기 II급 식물인 대홍란을 포함하여 희귀식물 5분류군이 분포하는 것으로 나타났으며, 식물구계학적 특정 식물종은 V등급 2분류군, IV등급 5분류군, III등급 15분류군, II등급 14분류군, I등급이 19분류군으로 조사되었다. 기후변화 생물 지표종은 지표종 11종 후보종 2종이 분포하여 전체 지표종의 33.3%, 후보종은 15.4%로 높은 비율을 보였다. 귀화식물은 16과 43속 52분류군으로 귀화율 21.1%이며, 도시화지수는 24.5%로 높게 나타났다. 이러한 결과는 향후 해안사구의 기후변화에 따른 생물다양성의 보전과 관리 방안을 마련하는 데 필요한 자료로 널리 활용될 것이 기대된다.

Keywords

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