浙江丽水太山山地常绿阔叶林主要种群生态位研究

对浙江丽水太山山地常绿阔叶林中的10个主要乔木种群生态位宽度和生态位相似性比例及生态位重叠进行了研究。结果表明:(1)研究区主要树种的生态位宽度大小顺序为:甜槠>木荷>褐叶青冈>青冈>苦槠>米槠>枫香树>石栎>虎皮楠>多花泡花树;(2)生态位相似性比例大于0.4的仅有36对,占80%,表明群落内物种对资源利用相似性程度较高;(3)生态位重叠指数大于0.4的共有38对,占84.44%,说明生态位重叠的程度很高。

The population niches of dominat tree species in an evergreen broad-leaved forest in Taishan mountain in Lishui of Zhejiang Province

The niche breadth,niche similarity and niche overlap of 10 tree specieses in Taishan mountain in Lishui of Zhejiang province were analyzed in this paper.The results showed as the follows:(1)The niche breadth of 10 species in order was Castanopsis eyrei>Schima superba>Cyclobalanopsis stewardiana>Cyclobalanopsis glauca>Castanopsis sclerophylla>Castanopsis carlessima>Liquidambar formosana>Lithocarpus glaber>Daphniphyllum oldhamii>Lithocarpus glaber.(2)The rate of niche similarity which was higher than 0.4 were 36 pairs of tree specieses,accounting for 80% of total spcieses,and which showed that the similarity degree of tree species of resources utilization in the community was high.(3) There were 38 pairs of tree specieses which niche overlaps were higher than 0.4,accounting for 84.44%,and which suggested that the degree of niche overlaps was very high in this forest.