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부산광역시 동백섬 문화경관림 식생구조 특성 연구

A Study on Vegetation Structure of Cultural Landscape Forest of Dongbaek Island, Busan

  • 김경원 (서울시립대학교 대학원 조경학과) ;
  • 이경재 (서울시립대학교 도시과학대학 조경학과) ;
  • 최진우 ((재)환경생태연구재단) ;
  • 염정헌 (서울시립대학교 대학원 조경학과) ;
  • 안인수 (토펙엔지니어링)
  • Kim, Kyungwon (Dept. of Landscape Architecture, Graduate School, Univ. of Seoul) ;
  • Lee, Kyong-Jae (Dept. of Landscape Architecture, College of Urban Sciences, Univ. of Seoul) ;
  • Choi, Jin Woo (Environmental Ecosystem Research Foundation) ;
  • Yeum, Jung Hun (Dept. of Landscape Architecture, Graduate School, Univ. of Seoul) ;
  • Ahn, In Su (TOPEC ENG)
  • 투고 : 2014.02.05
  • 심사 : 2014.04.03
  • 발행 : 2014.04.30

초록

본 연구는 부산광역시 지정 기념물 제 46호인 동백섬에 대해 문화경관림으로서의 식생관리방안을 제시하고자 하였다. 연구대상지는 동백섬 내 자연휴식년제 지역인 정상부 주변 $20,000m^2$이었다. 지형, 식생, 식생관리현황을 기준으로 식생구조 유형을 분류하였으며 유형별 식물군집구조 분석을 통해 관리방안을 도출하였다. 식생구조 유형은 관리되고 있는 동백나무림, 관리되지 않은 사스레피나무림, 험준지의 미관리된 사스레피나무림 등 3개로 구분되었으며, 식물군집구조 분석결과, 교목층에서는 곰솔이 우점하였고 아교목층에서는 동백나무(유형 I), 사스레피나무(유형II, III)가 우점하였다. 특히, 관목층을 중심으로 난대림의 극상수종인 후박나무가 일부 분포하였다. 흉고직경급별 분석결과, 유형 I, II에서 중경목의 팽나무와 후박나무가 일부 분포하였고 모든 유형의 관목층에서 후박나무가 4~44주 생육하였다. 교목층의 평균 수령은 66년, 아교목층은 22.9년이었으며 종다양도는 0.5472~0.8646로 분석되었다. 동백섬의 식생관리 방향으로서 기존 관리된 동백나무림은 주기적인 관리를 유지하며 관리되지 않은 사스레피나무림은 사스레피나무를 제거하고 동백나무를 식재하는 관리를 제안하였다. 관리되지 않은 험준지 사스레피나무림은 동백나무경관 형성이 불가능 할 것으로 예측되어 상록활엽수림으로의 천이유도 방안을 제시하였다.

The purpose of this study is to suggest vegetation management method as the cultural landscape forest of Dongbaek Island which is the district monument. The study area was $20,000m^2$ around the peak area in management as the nature sabbatical area. Vegetation structure type was classified with the criteria of topography, vegetation, management and the management plan was derived from the vegetation structure analysis according to the types. Vegetation structure types were Management-Camellia japonica, Non-management-Eurya japonica, Non-management-Rugged area-Eurya japonica. As the result of vegetation structure, Pinus thunbergii dominated in canopy layer and Camellia japonica and Eurya japonica dominated in Type I and in Type II and III, respectively. Especially, Machilus thunbergii as the climax species in the warm temperate forest were distributed centering shrubs, and as the result of distribution of diameter of breast height, middle size of Celtis sinensis and Machilus thunbergii were distributed in type I, II. Machilus thunbergii were distributed in range of 4 to 44 individuals through the all types. Mean age of canopy layer was 66 year-old and sub-canopy layer was 22.9 year-old. Shanon's species diversity was analysed from 0.5472 to 0.8646. As the vegetation management direction of Dongbaek island, managed Camellia japonica forest was suggested to maintain the regular management and non-managed Eurya japonica forest was required to remove the Eurya japonica and plant the Camellia japonica. In case of non managed Eurya japonica forest in rugged area, vegetation succession was required to laurel forest.

키워드

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