Abstract
This study conducted an analysis of plant species composition and vegetation at sea cliffs of the uninhabited islets off Ganghwa-gun by applying discontinuous classification method & continuous ordination method of species composition table by correlation. The analysis results are as follows: First, the plant showing the highest appearance frequency was Parthenocissus tricuspidata Planch.(58.3%), followed by Carpinus coreana Nak., Viburnum carlesii Hemsl. and Kalopanax septemlobus Koidz.(37.5%,respectively). As for a plant community, it was found that it consisted of Quercus mongolica community, Tilia mandshurica community, Carpinus coreana community, Sorbus alnifolia community and Pinus thunbergii community; as for the community distribution classified by individual islet, it was revealed that Quercus mongolica community appeared at Sosongdo and Bunjido; Tilia mandshurica community at Sosongdo and Daesongdo; Carpinus coreana community appeared at Woodo, Suribong and Bido; Sorbus alnifolia community at Susido, Sosongdo and Daesongdo, and Pinus thunbergii community at Seokdo and Woodo, respectively. The plant similarity classified by uninhabited islet was found to be the highest at Sosongdo and Daesongdo. This research judged the reason why the typical grassland community of coastal cliffs did not join these islets to be environmental conditions of rock landform where there exists almost no surface soil at most sea cliffs; thus, more detailed study on this was required.
본 연구는 상관에 의한 종조성표의 불연속성인 분류법과 연속성인 배열법을 적용하여 강화군 무인도서 해식애의 식물종조성 및 식생을 분석하였다. 해식애에서 출현빈도가 가장 높은 식물은 담쟁이덩굴(58.3%)이었으며 다음으로 소사나무, 분꽃나무, 음나무(각각 37.5%)이었다. 식물의 군락구조는 신갈나무군락, 찰피나무군락, 소사나무군락, 팥배나무군락, 곰솔군락으로 구분되었다. 도서별로는 신갈나무군락이 소송도와 분지도, 찰피나무군락은 대송도, 소송도, 소사나무군락은 우도, 수리봉, 비도, 팥배나무군락은 수시도, 대송도, 소송도, 곰솔군락은 석도, 우도에 나타났다. 도서별 유연관계는 소송도와 대송도의 유사도가 가장 높았다. 전형적인 해안단애초원군락이 결합하지 않은 이유는 해식애 대부분이 표토가 거의 없는 암석바위의 지형적 환경조건 때문으로 판단되어 이에 대한 세밀한 연구가 필요하였다.
