作　　者： ; ; ; ;

机构地区： 西南林学院资源学院

出　　处： 《西南林学院学报》 2007年第1期15-19,共5页

摘　　要： 以高黎贡山中部的印度木荷、硬斗石栎林6条600 m2的样带调查为依据,对群落乔木层26个树种中重要值最大的10个种进行生态位研究.结果表明:群落中生态位宽度较大的树种为印度木荷、硬斗石栎、绿叶甘橿、贡山大叶柳、针齿铁子,它们的Shannon-Wiener和Levins生态位宽度分别为0.772,0.761,0.741,0.659,0.632和0.971,0.934,0.843,0.708,0.658.生态位宽度的大小与按重要值排列的顺序基本一致.群落中生态位重叠值Lih及Lhi>0.08所占的比例分别为88.89%和75.56%,主要树种对资源有明显的共享趋势.但这些树种间的生态位重叠与它们的生态位宽度大小并没有明显的正相关:生态位宽度值大的树种之间,生态位重叠值较小;生态位宽度值大的树种与生态位宽度值小的树种,其生态位重叠值较大;生态位宽度值小的树种之间,生态位重叠值却较大. Based on investigation of 6 band plots sampled in the Schima khasiana ＆ Lithocarpus hance forest in the Gaoligong Nature Reserve, the niche characteristics of 10 main tree species consisting of the forest were analyzed. The results showed that the Shannon - Wiener and Levins＇s niche breadths of Schima khasiana, Lithocarpus hancei, Lindera fruticosa, Salix magnifica and Myrsine semiserrata tree species were 0. 772, 0. 761, 0. 741, 0. 659, 0. 632 and 0. 971, 0. 934, 0. 843, 0. 708, 0. 658 respectively. The descending order of the niche breadth was to some extent in accordance with the importance value sequence of the populations. 88.89% of the Lih niche overlapping values and 75.56% of the Lhi niche overlapping values in the community were over 0. 08. There was an evident resource -sharing potential among the main tree species, but there was no positive correlation between the values of niche overlapping and niche breadth of the tree species. The niche overlapping values were smaller among tree species that all had larger niche breadth values, while the niche overlapping values were larger among tree species if there was much difference in niche breadth values. There were greater niche overlapping values among tree species that all had smaller niche breadth values. It was found out that the community studied was in the cause of restoration.

关 键 词： 印度木荷 硬斗石栎林 生态位宽度 生态位重叠 高黎贡山

领　　域： [农业科学]