对万木林自然保护区常绿阔叶林森林群落的５３个主要种群进行生态位测定，包括生态位宽度、生态位相似比例、生态位重叠。结果表明：组成万木林森林群落的种群绝大多数为狭生态位、种群之间关系复杂，对资源具有一定的共享性；种群之间的生态位相似性比例和生态位重叠指数指标值反映了亚热带常绿阔叶林的生态特征。 Fifty-three main populations of evergreen broad-leaved forest community in Wanmulin Nature Reserve were determined for niche, including niche breadth, niche similarity and niche overlap. The results showed that most of the populations composing the forest community of Wanmulin were narrow niche, the relationship between populations was complex, and the resources shared a certain degree. The index of niche similarity and niche overlap index between populations reflected Ecological characteristics of subtropical evergreen broadleaved forest.