우리나라 오리나무림의 군락생태학적 연구 = A Synecological Study of the Alnus japonica Forests in Korea

다국어 초록 (Multilingual Abstract)

Alder (Alnus japonica) forests are representative of the wetland in East Asia, including Korea. In the past, alder forests were relatively common in various habitats such as mountains, riversides, back marshes, and alluvial plains. However, this plant community has recently become rare due to increasingly arid habitats and the influence of various land uses. In this study, we identify the synecological characteristics of alder (A. japonica) forests distributed naturally in the mountainous wetlands of Korea and provide basic data for their systematic conservation and management in the future. Based on vegetation survey data collected from 66 alder forests, community types were classified using the methods of the Zürich–Montpellier School of Phytosociology and two-way indicator species analysis. There were eight community types: Styrax obassia, Weigela subsessilis-Fraxinus mandschurica, Spiraea fritschiana, Viola verecunda, Impatiens textori-Spiraea salicifolia, Glyceria leptolepis, Molinia japonica, and Lindera obtusiloba-Quercus acutissima. These community types constituted a vegetation unit hierarchy of two communities, four subcommunities, and eight variants. In addition, the ecological characteristics of each community type were compared (including total coverage per 100 square meter, importance value index, constancy class, life-form composition, diversity indices, community similarity coefficient, and indicator species ).

국문 초록 (Abstract)

오리나무림은 우리나라를 비롯한 동아시아의 습지림을 구성하는 대표적인 임분으로 예전에는 산지, 하변, 배후습지, 그리고 충적 저지 등 다양한 서식환경에서 비교적 흔하게 분포하고 있었으나, 다양한 토지이용과 서식지의 건조화 등의 영향으로 최근에는 보기 드문 식물군락 중의 하나로 여겨지고 있다. 본 연구는 우리나라 산지습지에 자연적으로 분포하고 있는 오리나무림의 군락생태학적 특성을 파악하여 향후 그 체계적 보전 및 관리를 위한 기초자료를 제공하는 데 있다. 전국 66개 지소의 오리나무림을 대상으로 ZM학파의 식물사회학적 방법과 이원지표종분석(TWINSPAN)을 병용하여군락 유형을 분류한 결과, 모두 8개 단위 유형 (쪽동백나무형, 들메나무-병꽃나무형, 참조팝나무형, 콩제비꽃형, 꼬리조팝나무-물봉선형, 왕미꾸리광이형, 진퍼리새형, 그리고 상수리나무-생강나무형)이 구분되었으며, 2개 군락, 4개 아군락, 그리고8개 변군락(variant)의 식생단위 체계로 구성되어 있음을 알 수 있었다. 또한, 군락유형별 생태적 특성(구성종의 총피도(/100㎡), 중요치, 상재도, 생활형 조성, 종다양성 지수, 군락유사도 그리고 지표종 등)을 비교하였다.

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