摘要
1997年 9月和 1998年 4月 ,采用样地调查法对西双版纳热带季节雨林林窗期、建群期、成熟期森林昆虫进行调查 ,共获得昆虫 2 45 5头 ,分属 15目。对昆虫群落类群组成、数量结构及群落多样性和相似性研究结果表明 :双翅目、鞘翅目和膜翅目成为 3种生境昆虫群落的主要优势类群 ,鳞翅目为常见类群。在雨林循环生长最旺盛阶段的建群期次生林昆虫群落物种丰富度和优势度指数最高 ;林窗期先锋次生林最低 ,均匀性指数较高 ;成熟期原生林Shannon Wiener多样性指数最高 ,呈现出随生长年代的增加而增大的趋势。成熟期原生林与建群期次生林昆虫群落相似性系数达到极相似水平 ;而林窗期与建群期因生境差异较大 ,昆虫群落相似性处于中等相似水平。
The sample plot investigating method was used to research insect communities in three different growth phrase of tropical rain forest (gap phase,building phase,mature phase) of Xishuangbanna in September,1997 and April,1998.The species and individual composition of insect communities were studied,the D MA , J , d , D s , H ′index were used for comparing the diversity of insect communities in three habitats.The results showed that the total number of insects collected were 2?455 belonging to 15 orders with Diptera,Hymenoptera and Coleoptera as the dominant groups and Lepidoptera as the normal groups.There were the most number of species and individuals of insect communities in building phase (secondary forest).The richness and dominance of insect communities were the largest in building phase,but the evenness of gap phase was the largest.The Shannon Wiener diversity index in mature phase was the largest,and it got higher with the increase of growth stage.The species composition similarity between mature phase and building phase of tropical rain forests was the highest,but it was lower between building phase and gap phrase.
基金
中国科学院"九.五"重点项目!(KZ95 2 -S1-10 1)
云南省自然科学基金项目!(1999C0 0 2 1Q)
西双版纳热带植物园蔡希陶基金资助
关键词
昆虫群落
热带雨林
生长期
西双版纳
群落结构
Insect community
Tropical rainforest
Development phase
Xishuangbanna
