백두대간 마루금 일대의 고도별 α 및 β 식물 다양성분포 패턴 및 제어인자 = Elevational Patterns and Determinants of α and β Plant Diversity on the Ridge of the Baekdudaegan Mountains, South Korea

다국어 초록 (Multilingual Abstract)

In this study, we studied the elevational patterns of plant diversity and examined the effectsof climatic factors, area, geometric constraints or mid-domain effect and net primary productivityon the observed diversity patterns along the ridge of the Baekdudaegan Mountains, South Korea.
Plant data were colleted from 1,100 plots along a elevational gradient on the ridge of theBaekdudaegan Mountains. A total of 802 plant species from 97 families and 342 genera wererecorded. The elevational patterns of α plant diversity such as species richness andShannon-Wiener index along the ridge of the Baekdudaegan Mountains depicted distinctlyunimodal patterns, whereas the β diversity increased with elevation. The mid-domain effect wasthe most powerful explanatory variables for α diversity. However, climatic factors were betterpredictors for β diversity. This study suggests that different elevational patterns may beobserved between different diversity measurements even in the same taxon and that a combined interaction of some factors influences species diversity patterns along the elevational gradient onthe ridge of the Baekdudaegan Mountains, South Korea.

국문 초록 (Abstract)

본 연구는 남한지역 백두대간 마루금 일대의 고도별 식물 다양성 분포 패턴 및 기후인자, 면적, 기하학적 억제인자, 순일차 생산량이 고도별 식물 다양성 분포 패턴에 미치는 효과를 구명하기 위해 수행되었다. 백두대간 마루금 일대를 따라 위치한 1,100개의 조사구에 대한 식생조사 결과, 총 97과 342속 802종의 식물종이 관찰되었으며, 고도에 따른 식물종의 α 다양성을 나타내는 종풍부도와 Shannon-Wiener지수는 단봉형 패턴을 나타내는 반면, β 다양성을 나타내는 Jaccard와 Chao-Jaccard 유사도 지수는고도에 따라 일반적으로 증가하는 경향을 나타내었다. 또한, 이러한 분포 패턴을 제어하는 인자로서 기하학적 억제인자가 α 다양성을 설명하는 가장 중요한 인자로 나타났으며, β 다양성은 기후인자가 가장높은 설명력을 가지는 인자로 나타났다. 본 연구는 동일한 분류군 내에서도 다양성 측정방법에 따라 상이한 고도별 분포 패턴 및 제어인자를 가진다는 것을 제시하며, 백두대간 마루금 일대의 식물 다양성을제어하는 인자가 단순히 하나가 아닌 몇 가지 인자의 복합작용에 의해 나타나는 현상임을 의미한다.

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