산겨릅나무(Acer tegmentosum Maxim.) 자생지의 서식환경 특성 및 식생구조
Growth Environment and Vegetation Structure of Habitats of Acer tegmentosum Maxim.
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초록
본 연구는 산겨릅나무 자생지(화악산, 망대암산, 계방산, 고루포기봉, 가리왕산, 두위봉, 금대봉과 지리산)의 입지환경, 토양특성, 및 식생구조 분석을 통해 자생지 보전 및 복원을 위한 기초자료를 제공하고자 하였다. 산겨릅나무 자생지는 해발 605∼1,413m에 위치하고, 경사는 8∼30°로 다양하며, 노암율은 8∼50%로 나타났다. PC-ORD를 이용한 이단계 군집분석 결과 군집Ⅰ(산겨릅나무-신갈나무 군집),군집Ⅱ(산겨릅나무-까치박달 군집), 군집Ⅲ(신갈나무-피나무 군집) 등 3개의 식물 군집으로 구분되었다. 종다양성지수(H')는 군집 Ⅱ가 1.474로 가장 높게 나타났으며, 군집 Ⅰ이 1.417, 군집 Ⅲ이 1.219로확인되었다. 산겨릅나무 자생지의 토성은 점토의 비율이 높은 식양토이며, 토양 산도, 유기물함량, 유효인산은 각각 pH 4.8, 15.56%, 2.33ppm으로 확인되었다. 토양 특성과 군집, 표징종을 ordination분석한 결과 가장 크게 영향을 주는 인자는 사면경사이며, 아교목층과 관목층의 피도, 유기물함량, 전질소,칼슘, 마그네슘인 것으로 확인되었다. 환경요인 간 상관 분석을 실시한 결과, O.M. - (T.N., K+,Mg2+, CEC, EC), T.N. - (K+, Mg2+, CEC, EC) 등은 높은 정의 상관관계를 형성하였다.
Abstract
The present study was to survey the site environment, vegetation structure and soilcharacteristics in the wild habitats of Acer tegmentosum Maxim. and offers basic information forhabitats conservation and restoration. Most of the wild habitats were located at altitudes between605∼1,413m with inclinations ranged as 8∼30°. The bare rock rate were 8∼50%. Thevegetation structure by the PC-ORD based on the Two Way Cluster Analysis were divided intothree groups CommunityⅠ(Acer tegmentosum – Quercus mongolica), CommunityⅡ(Acertegmentosum - Carpinus cordata), CommunityⅢ(Quercus mongolica – Tilia amurensis). Thespecies diversity(H') was highest in CommunityⅡ as 1.474, CommunityⅠwas 1.471, CommunityⅢ was 1.219. The soil textures were Clay loam, The average soil pH was 4.8, Soil organicmatter was 15.15% and available phosphorus was 2.33ppm. Ordination analysis result by soilcharacteristics, community, characteristic species showed that the greatest effect factors wereslope, altitude, tree and shrub’s cover rate, organic matter, total-nitrogen, calcium, magnesium. Correlation analysis between environment factor result showed that O.M. - (T.N., K+, Mg2+,CEC, EC), T.N. - (K+, Mg2+, CEC, EC) were positive correlations.
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