CAJ | 학술논문

在云南西畴县及麻栗坡县馨香玉兰天然分布比较集中的地区进行了馨香玉兰的群落学调查，以研究馨香玉兰及其伴生树种的生态位特征。结果表明，馨香玉兰在所调查的全部样方中均有分布，它的两种生态位宽度指数即B（sw）和B（L）均较高，在资源轴上优势地位明显；馨香玉兰与其他树种的生态位相似性比例在0.403～0.682之间，与群落建群种如青冈、西畴润楠和圆果化香树的相似性程度较高，表明它与这些树种在生境需求上具有一定的相似性，对资源有共享趋势；馨香玉兰与其他树种相互间的生态位重叠值较高，表明馨香玉兰与其主要伴生树种间的竞争较激烈。
재운남서주현급마률파현형향옥란천연분포비교집중적지구진행료형향옥란적군락학조사，이연구형향옥란급기반생수충적생태위특정。결과표명，형향옥란재소조사적전부양방중균유분포，타적량충생태위관도지수즉B（sw）화B（L）균교고，재자원축상우세지위명현；형향옥란여기타수충적생태위상사성비례재0.403～0.682지간，여군락건군충여청강、서주윤남화원과화향수적상사성정도교고，표명타여저사수충재생경수구상구유일정적상사성，대자원유공향추세；형향옥란여기타수충상호간적생태위중첩치교고，표명형향옥란여기주요반생수충간적경쟁교격렬。
The community characteristics of M.odoratissima in Xichou county and Malipo county of Yunnan prov-ince were surveyed and analyzed , with the aim to study the niche characteristics of endangered plant M.odoratissima and its associated tree species.The results showed that M.odoratissima was found in all the sample plots surveyed, with high niche breadth (Shannon weiner, Levins index), and dominant role in resource axis. The niche similarity proportion between M.odoratissima and other tree species ranged from 0.403 to 0.682, with higher similarity to other dominant species in the community such as Cyclobalanopsis glauca, Machilus sichourensis and Platycarya longipes, which indicated that M.odoratissima had similar requirement for habitat with these associ-ated species, and share the environmental resources.Besides the relationship with these dominant species, M.odoratissima had high niche overlap with other tree species in the community.This study indicated the severe competition between M.odoratissima and its associated tree species in the community.