梅花山拟赤杨群落主要树种种群生态位研究

在梅花山国家级自然保护区选择拟赤杨群落为对象,以样方为一维资源位,以树种的重要值作为资源位上的表现特征,定量分析拟赤杨群落中主要树种种群生态位宽度、生态位相似性比例和生态位重叠。结果表明：拟赤杨种群的生态位宽度最大,在群落中处于绝对优势地位,这主要是由于其具有广泛的适应性,而其他树种则呈现较小的生态位宽度值;群落中主要树种种群之间的相似性比例值不太高,生态位虽有一定程度的重叠,但总体仍然较低,群落内种间竞争并不十分激烈。其计测结果可作为进一步研究梅花山拟赤杨群落结构、动态及种间关系的基础,亦可用于指导拟赤杨混交林的营造。

A Study on Niches of the Major Tree Species Populations in Alniphyllum fortunei Community in Meihua Mount Nature Reserve

The niche breadth,niche proportional similarity and niche overlap of the major tree species populations in Alniphyllum fortunei community in Meihua Mount National Nature Reserve were studied by taking sample plots as one-dimension resource location and important value of tree species as the symbolic character of the resource location.The results were as follows: the niche breadth value of A.fortunei was the biggest among the species of the community mainly because of its strong adaptability to the environme...