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Korean J. Pl. Taxon > Volume 41(4); 2011 > Article
Korean Journal of Plant Taxonomy 2011;41(4): 429-439.
doi: https://doi.org/10.11110/kjpt.2011.41.4.429
임자도 지역의 식물상
홍행화 , 손현덕 , 인석영 , 임형탁
Floristic study of Imja-do (Isl.)
Haeng Hwa Hong, Hyun Deok Son, Seok Young In, Hyoung Tak Im
Received: December 10, 2011  Revised: December 14, 2011   Accepted: December 16, 2011
Abstract
We investigated the flora of Imja-do(Isl.), an island of the Shinan archipelago, located in Imja-myeon, Shinan-gun, Jollanamo-do and discussed the vascular plants found there. Twenty-four separate field trips (100days) were completed from August of 1997 to October of 2009. As a result, we identified the distribution of 526 taxa in Imja-do(Isl.), comprising 112 families, 331 genera, 463 species, 1 subspecies, 60 varieties, and 2 forms. There are a total of 78 taxa of floristic regional indicator plants and one taxon of level II endangered species, Millettia japonica, as designated by the Korean Ministry of the Environment. The floristic regional indicator plants are as follows; four taxa of level V such as Utricularia bifida, two taxa of level IV such as Cladium chinense, 14 taxa of level III such as Aletris spicata, three taxa of level II, and 55 taxa of level I. In addition, one endangered species (EN), Nymphoides coreana, five vulnerable species (VU),such as Ilex cornuta, and three near-threatened species (NT) such as Utricula riaracemosa, were found in the investigated area. The plants of Imja-do(Isl.) are classified into four types based on the plant geographical origin, as follows: 1) boreal plants advancing southward in a glacial period, 2) temperate plants spreading eastward from the Himalayas and China to Japan passing through the south coast of Korea, 3) subtropical plants, and 4) indigenously developed endemic species of the warm-temperate region of East Asia.
KeyWords: Imja-do, Isl., flora, plant geography
주요어: 임자도, 식물상, 식물지리학
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