Abstract
To investigate the vegetation structure of mountain ridge from Namdeogyusan to Sosajae in Baekdudaegan which is the greatest chain as well as the major ecological axix of the Korean Peninsula, sixteen sites(size 500$m^2$) were set up and surveyed. By using TWINSPAN technique, the plants community was divided and summarized into five groups, those are four Quercus mongolica dominated communities and Quercus mongolica-Pinus densiflora community. Four Quercus mongolica dominated communities have differentiated from subtree dominant species. Vegetation structure of each community have explained using important percentage by layer. In descriptive analysis, average number of species is 27.8$\pm$7.5 and average number of individuals is 687.6$\pm$326.8 at unit area(500$m^2$).
백두대간의 남덕유산∼소사해 구간 능선부에 대해 16개 조사지(단위면적 500$m^2$)를 설정하여 식생구조를 조사하였다. Classification(TWINSPAN)기법에 의한 군락분리를 실시 한 결과, 군락 I 에서 군락 IV는 모두 신갈나무가 우점종인 가운데 부수종별 차이가 있었으며, 군락V는 신갈나무-소나무군락으로 최종 5개 군락으로 분리되었다. 각 군락은 층위별 상대우점치를 이용하여 군락구조를 밝혔다. 기술통계분석결과 단위면적당(500$m^2$)평균출현종수는 27.8$\pm$7.5종, 평균출현개체수는 687.6$\pm$326.8주이었다.
