Korean Journal of Ecology and Environment (생태와환경)

The Korean Society of Limnology (한국수생태학회)
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Population Structure and Fine-scale Habitat Affinity of Cymbidium kanran Protected Area as a Natural Monument

천연기념물 한란 보호구역의 개체군 구조 및 미세 서식처 선호성

  • Shin, Jae-Kwon (Plant Conservation Division, Korea National Arboretum) ;
  • Koo, Bon-Youl (Plant Conservation Division, Korea National Arboretum) ;
  • Kim, Han-Gyeoul (Plant Conservation Division, Korea National Arboretum) ;
  • Kwon, He-Jin (Plant Conservation Division, Korea National Arboretum) ;
  • Son, Sung-Won (Plant Conservation Division, Korea National Arboretum) ;
  • Lee, Jong-Seok (Plant Conservation Division, Korea National Arboretum) ;
  • Cho, Hyun-Je (Korea Forest Ecosystem Institute) ;
  • Bae, Kwan-Ho (School of Ecology & Environmental System, Kyungpook National University) ;
  • Cho, Young-Chan (Plant Conservation Division, Korea National Arboretum)
  • 신재권 (국립수목원 산림자원보존과) ;
  • 구본열 (국립수목원 산림자원보존과) ;
  • 김한결 (국립수목원 산림자원보존과) ;
  • 권혜진 (국립수목원 산림자원보존과) ;
  • 손성원 (국립수목원 산림자원보존과) ;
  • 이종석 (국립수목원 산림자원보존과) ;
  • 조현제 (한국산림생태연구소) ;
  • 배관호 (국립경북대학교 생태환경시스템학부) ;
  • 조용찬 (국립수목원 산림자원보존과)
  • Received : 2014.08.05
  • Accepted : 2014.09.05
  • Published : 2014.09.30
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Abstract

There are no population ecological research on the natural monument (No. 191) Jeju Cymbidium kanran in South Korea. In this study, we analyzed the population structure and fine-scale habitat affinity of C. kanran in Sanghyo-dong, Jejudo Island from Oct. 2013 to Feb. 2014. We observed total of 1,237 individuals (4,341 pseudobulbs) of C. kanran (989.6 population $ha^{-1}$) within (1.25 ha) and only 17 (1.4%) individuals were inflorescent. In 60.9% of the entire populations, disease symptoms such as spots and blight leaves were observed. C. kanran populaton exhibited reverse-J shaped size distribution based on leaf area classes as individual size parameter. The three size related attributes of C. kanran (no. of pseudobulb $r_s$=-0.159, no. of leaves $r_s$=-0.148 and leaf arera $r_s$=-0.114) and soil temperature revealed a negative relationship (p<0.0001). Most of C. kanran (95.4%) were grown under Castamopsis cuspidata and spatially, C. kanran were strongly clumped at all distances. Population characteristics of C. kanran in the study area were likely originated from species habitat affinity and successional environment. Through this study, base line data for C. kanran's habitat monitoring was established and conservation measures based on population characteristics were discussed.

멸종위기종이며 식물지리학적으로 중요 종임에도 불구하고, 천연기념물 제191호 한란의 개체군 생태에 관한 연구는 우리나라에서 수행된 바 없다. 본 연구는 2013년 10월부터 2014년 2월까지 제주특별자치도 서귀포시 상효동 돈내코 계곡과 접한 한란 자생지의 환경 개체군 구조 및 미세 석시처 선호성을 분석하였다. 조사지역 (1.25 ha)에서 총 1,237 (989.6개체 $ha^{-1}$)개체의 한란을 관찰하였으며, 위인경 (pseudobulb)은 모두 4,341개, 그리고 17개체 (1.4%)에서 개화를 확인하였다. 전체 개체 중 60.9%에서 잎마름 및 반점 등의 병징이 관찰되었다. 엽면적의 경우 전체적으로 소형 개체가 가장 많고, 준중형, 중형, 준대형 및 대형의 순으로 많은 역-J자 형태로 나타났다. 한란의 크기 (위인경 수 $r_s$=-0.159, 잎 수 $r_s$=-0.148, 그리고 엽면적 $r_s$=-0.114)는 토양온도와 약하지만 유의한(p<0.0001) 음의상관을 나타내었다. 한란은 거의 모든 개체 (95.4%)가 구실잣밤나무 아래에서 자라고 있었으며, 공간적으로 모여서 자라는 특성을 나타내었다. 연구 지역에 나타난 한란 개체군 특성은 종의 서식처 선호성과 자생지의 천이 진행에 의한 것으로 생각된다. 본 연구를 통하여 한란 자생지 모니터링 기반을 마련하였으며, 개체군 특성에 기초한 보전방안을 논의 하였다.

Keywords

References

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