对武夷山保护区杉阔混交林中 1 1个主要乔木种群的生态位特征进行分析 .结果表明 :在杉阔混交林中 ,不同公式计算出的生态位宽度值之间存在着显著正相关关系 .主要种群的生态位宽度和重要值之间也存在着显著正相关关系 .重要值较大的种群对生境的适应性也较强 ,其生态位宽度较大 .杉木、木荷、丝栗栲、马尾松种群属宽生态位种 .大多数种对的生态位重叠较大 ,对资源的共享趋势明显 ,群落稳定性较好 .宽生态位种与其它种群的生态位重叠机会大 ;反之 ,则小 The ecological niche characteristics of 11 main tree species in the mixed plantation of Chinese fir and Fir in Wuyishan Nature Reserve were analyzed.The results showed that there was a significant positive correlation between the niche breadth values ​​calculated by different formulas in Chinese fir and broad-leaved mixed forest. Significant positive correlation exists also between the niche breadth and the important value of the main population.The adaptability of habitat with larger importance value is also stronger and its niche breadth is larger.Chinese fir, Schima superba, Scutellaria barbata, Masson pine populations were broad niche species, and most of the species had large niche overlap, obvious sharing of resources and good community stability, and niche overlap of broad niche species and other populations was more likely. On the contrary, small