武夷山杉阔混交林种群生态位特征

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

Niche Characteristic of Tree Populations in the Chinese fir and Broa d-leaved Forest in Wuyi Mountain

The niche characteristic of 11 main tree populations in the Chinese fir and broad leaved forest in Wuyi Mountain was measured. The results showed that there was very significantly positive correlation between the values from different formulas of niche breadth in the Chinese fir and broad leaved forest. And there was also very significantly positive correlation between the niche breath and the important value of main tree populations. The tree populations, whose important value were higher than others, were more adaptable to habitat and their niche breadth was larger than others.Cunninghamia lanceolata, Schima superba,Castanopsis fargesii,Pinus massoniana were belonging to the tree populations of broad niche breadth. The niche overlap of major tree populations counterpart was larger, which showed that the trend of share of resource utilization was obvious and the stage of community was good. The niche overlapping chance between tree populations of broad niche breadth and others were larger than the niche overlapping chance between the tree populations of narrow niche breadth and other, vice versa.