西双版纳热带森林次生演替初期山黄麻先锋群落生物量动态  

Biomass Dynamics of the Pioneer Trema Orientalis Community in the Early Stages of Secondary Succession of Tropical Forest in Xishuangbanna.

作　　者：冯志立[1] 唐建维[1] 郑征[1] 宋启示[1] 曹敏[1] 张建侯[1] 解继武 

机构地区：[1]中国科学院西双版纳热带植物园,云南省勐腊县勐仑镇666303

出　　处：《生态学杂志》1999年第5期1-6,共6页Chinese Journal of Ecology

基　　金：中国科学院九.五重点项目;国家自然科学基金;中国科学院生态系统研究网络(CERN) 项目

摘　　要：. The biomass dynamics of the pioneer Trema orientalis community in the early stages of secondary succession of tropical forest in Xishuangbanna had been studied for 5 years by the standard tree regression (for trees) and clear cut method (for shrub,herb and inter layer plants). 1)The biomass distribution by organs was ranked as stems>branches>roots>leaves. 2)As the succession proceed, the percentages of stem and root biomass increased gradually, the percentage of leaves obviously decreased, and the percentage of branches fluctuated slightly; the dorminant species T. orientalis was replaced gradually by other species,that made the biomass distribution by species appeared to have a characteristics of relative dispersion;the biomass distribution by DBH class showed that biomass was mainly determined by the amounts of larger DBH class trees;the percentage of the tree biomass to the total community biomass gradually increased, the percentages of the shrub and herb layers remarkably decreased and the percentage of the inter-layer plants increased slightly .. The biomass dynamics of the pioneer Trema orientalis community in the early stages of secondary succession of tropical forest in Xishuangbanna had been studied for 5 years by the standard tree regression (for trees) and clear cut method (for shrub,herb and inter layer plants). 1)The biomass distribution by organs was ranked as stems>branches>roots>leaves. 2)As the succession proceed, the percentages of stem and root biomass increased gradually, the percentage of leaves obviously decreased, and the percentage of branches fluctuated slightly; the dorminant species T. orientalis was replaced gradually by other species,that made the biomass distribution by species appeared to have a characteristics of relative dispersion;the biomass distribution by DBH class showed that biomass was mainly determined by the amounts of larger DBH class trees;the percentage of the tree biomass to the total community biomass gradually increased, the percentages of the shrub and herb layers remarkably decreased and the percentage of the inter-layer plants increased slightly .

关 键 词：山黄麻 担 次生演替 西双版纳 

分 类 号：Q949.757.2[生物学—植物学]