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A Study on the Distribution and Conservation Plan of Vascular Flora in Gyodong Island

교동도의 관속식물상 분포 및 보전방안 연구

  • Received : 2021.10.26
  • Accepted : 2022.02.03
  • Published : 2022.02.28

Abstract

This study was carried out to examine vascular plants and invasive alien plants in Gyodong Island, located at the northwestern Civilian Control Line (CCL) of Ganghwa-gun, Incheon, and to use them as basic data for systematic management of identified plants and establishing biodiversity conservation measures. The survey was conducted 13 times from April 2019 to August 2021. The vascularflora in Gyodong Island was identified as 109 families, 378 genera, 641 species, 15 subspecies, 49 variants, 8 forma, a total of 713 taxa. This was found to be about 15.36% of the total 4,641 taxa of vascular plants in Korea. The northern linage plants on the Korean Peninsula appearing in the Gyodong Island area were identified in 83 classification groups, including Red-based leaf edge (Carex erythrobasis H.Lev. & Vaniot). Korea endemic plants were identified as 16 taxa such as Seoul wild-ginger [Asarum heterotropoides var. seoulense (Nakai) Kitag.], and a total of 20 taxa of rare plants designated by IUCN were observed, including the endangered grade Beardless iris (Iris ruthenica Ker Gawl.). Floristic target species were classified with a total of 99 taxa. For V grade, Beardless iris 1 taxon was found. and also IV grade and III grade were identified in 8 taxa and 20 taxa respectively. The invasive alien plants identified as 75 taxa, such as Verbesina alternifolia (L.) Britton ex Kearney. The naturalization rate was 10.51%, and the urbanization index was calculated as 23.29%. Since large-scale construction has been currently underway on Hwagae Mt. in Gyodong Island as the target of survey area, the influx of invasive plants will be expected to promote. Therefore, it is urgent to establish in-situ protection and conservation measures for notable plants such as Beardless iris and Water smartweed [Persicaria amphibia (L.) S.F.Gray].

본 연구는 인천광역시 강화군의 북서쪽 DMZ 민북지역에 위치한 교동도의 일대의 관속식물상과 침입외래식물 등을 살펴보고 파악된 식물들의 체계적인 관리와 생물다양성 보전 대책 수립을 위한 기초자료로 활용하기 위하여 수행되었다. 조사는 2019년 4월부터 2021년 8월까지 총 13회에 걸쳐 조사되었다. 교동도의 관속식물상은 총 109과 378속 641종 15아종 49변종 8품종 713분류군이 확인되었다. 이는 우리나라 관속식물 총 4,641분류군의 약 15.36%로 나타났다. 교동도 일대에서 출현한 북방계식물은 한라사초와 시호 등 83분류군이 확인되었다. 한반도 특산식물은 서울족도리풀, 붉노랑상사화 등 16종이 관찰되었다. IUCN 지정 희귀식물은 총 20분류군이 관찰되었다. 위기종(EN)은 물여뀌, 솔불꽃 등 4분류군, 취약종(VU)은 시호, 버들금불초 등 7분류군, 약관심종(LC)은 모새달, 두루미천남성 등 6종이 출현하였다. 식물구계학적 특정식물은 총 99분류군으로 파악되었다. V등급은 솔붓꽃 1분류군, IV등급은 뚝사초 등 8분류군, III등급은 큰꿩의비름 등 20분류군이 확인되었다. II등급은 개속새 및 물수세미 등 20분류군이 관찰되었다. 조사지역에서 출현한 침입외래식물은 나래가막사리, 가는털비름 등 75분류군으로 확인되었다. 귀화율은 10.51%로 나타났으며, 도시화지수는 23.29%로 산출되었다. 본 연구 대상지인 교동도는 2014년 교동대교가 개통되고, 주산인 화개산은 현재 대규모 공사가 진행 중이다. 따라서 침입외래식물 등의 유입이 더욱 심각할 것으로 예상되기 때문에, 솔붓꽃 및 물여뀌 등 특기할만한 식물의 현지 내 보호 및 보전대책 수립이 조속히 마련되어야 한다고 판단된다.

Keywords

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