南方铁杉群落物种多样性及乔木优势种生态位初步研究

Primary Study on Species Diversity and Niche Characteristics of Dominant Tree Species in Tsuga tchekiangensis Community

对黄桑坪自然保护区南方铁杉群落的物种多样性和乔木优势种的生态位特征进行了研究,结果表明:(1)在南方铁杉群落中乔木层优势种比较明显,灌木层比较均匀;(2)南方铁杉的生态位宽度最大,与其它种的生态位相似性比例值较大,但生态位重叠值却较小,说明南方铁杉在种群中与其它乔木优势种利用环境资源的相似程度较大,而与其它种的潜在竞争关系较小。

The species diversity,niche,and niche properties in the Tsuga tchekiangensis community in Huang Sang Ping Nature Reserve Area were studied.The results showed that：（1） In the Tsuga tchekiangensis community,the dominance of the tree layer were the highest,and the shrub layer were evenness;（2） the niche breadth and the similarity proportionaty of Tsuga tchekiangensis were higher than those of other dominant species,but its niche overlapping was lower.Those results showed that the similarity degree of its using resource was higher but its potential competition was lower.