전라북도 부안군‧고창군 무인도서 식생에 관한 연구 (A Study on the Vegetation of Uninhabited Islands in Buangun and Gochanggun of Jeollabukdo)

서지정보

· 발행기관 : 한국도서(섬)학회
· 수록지 정보 : 한국도서연구 / 28권 / 2호 / 221 ~ 235페이지
· 저자명 : 이남숙, 김창환, 이희철, 최영은, 장수림

초록

부안군과 고창군의 무인도서는 총 30개이며, 이들 도서 중 식생이 형성된 도서는 20개로 조사되었다. 20개의 식생이 형성된 도서 중 부안군 소재 무인도서는 18개이며, 고창군 소재 무인도서는 2개로서 심원면 만돌리에 위치한다.
20개 무인도서의 주요 식생은 억새군락 15.87%, 곰솔군락이 13.83%, 소사나무군락이 6.00%로서 전체 면적의 35.70%를 차지하고 있었으며, 순 식생면적으로는 154,267.60㎡로서 대부분이 이들 군락들에 의하여 우점되어 있다.
무인도서별 군락 다양성은 큰딴지도가 9개 군락이 분포하고 있으며, 증조도 5개 군락, 모괴도, 수리바위도 4개 군락이 분포하고 있어 큰딴지도를 제외하면 1-5개 군락이 분포하고 있어 군락 다양성은 비교적 낮다.
군락 출현비율은 곰솔군락과 억새군락이 높았으며, 곰솔군락이 분포하고 있는 무인도서에서는 곰솔군락의 분포비율이 높았다.
한편 전체 20개 무인도서에서 분포하는 군락은 총 22개 군락이며 이들 중 초본성 군락과 아‧관목성 군락은 각각 7개 군락이 있으며, 교목성 군락은 9개 군락이 분포한다. 특히 곰솔군락은 대부분이 식재된 군락이며, 억새, 참억새군락은 방목에 의해 형성된 군락이며, 이대와 왕대는 과거 방목 등의 관리를 위해 건축된 건축물 주변에 식재된 형태로 군락을 이루고 있다.
20개 무인도서의 전체적인 식생의 특징은 난대성 수목군락이 많지 않으며, 곰솔, 억새 등 식재 또는 교란된 식생의 분포비율이 비교적 높고 사구 식생이 거의 분포하지 않은 특징을 나타내고 있다. 이들 무인도서의 식생은 시간의 경과와 함께 천이가 진행되면 난대성 수종인 사스레피나무, 동백나무, 다정큼나무 등과 소사나무군락 분포 비율의 증가가 예상된다.

영어초록

Six field surveys were conducted from May to September of 2013 in order to identify vegetation and develop the current vegetation map of uninhabited islands in Buan-gun and Gochang-gun of Jeollabukdo. In total there were 30 uninhabited islands in Buan-gun and Gochang-gun, and vegetation was formed in 20 of them. Among the 20 uninhabited islands, 18 were located in Buan-gun and two in Mandol-ri, Simwon-myeon of Gochang-gun.
Main vegetation of 20 uninhabited islands was Miscanthus sinensis var. purpurascens community of 15.87%, the Pinus thunbergii community 13.83%, and the Carpinus coreana community 6.00%. Those three communities accounted for 35.70% of the total area. The net vegetation area was 154,267.60m2, and was mostly dominated by these communities. Regarding vegetation diversity, Keunttanji Island had nine communities, and Jeungjo Island had five communities. Mogoe Island and Suribawi Island had four communities each. Since the number of communities in these islands ranged from one to five except for the Keunttanji Island, and the community diversity was relatively low. The Pinus thunbergii community and Miscanthus sinensis var. purpurascens community had a high origination rate. In the uninhabited islands where the Pinus thunbergii community was largely distributed, the distribution ratio of Pinus thunbergii community was high.
A total of 22 communities were distributed in the 20 uninhabited islands. The number of herbaceous community, shrub community and subtree community were seven each, while the arboreal community was nine. Especially, in the Pinus thunbergii community most of those trees were planted and the Miscanthus sinensis var. purpurascens and Miscanthus sinensis community were formed by grazing. The Pseudosasa japonica and Phyllostachys bambusoides were planted around a structure that was constructed before for the purpose of management including grazing. As for the characteristic of overall vegetation in the 20 uninhabited islands, warm temperature communities were rare. Also, the distribution rate of planted or disturbed communities like the Pinus thunbergii and Miscanthus sinensis var. purpurascens was relatively high. Another characteristic was that the dune vegetation was rarely distributed. As the succession progresses, these uninhabited islands are expected to face an increase in the level of Eurya japonica, Camellia japonica, Raphiolepis umbellata and the Carpinus coreana community, all warm temperature species.

참고자료

· 없음