西双版纳望天树林十五年的动态变化研究  

Study on Dynamic Changes of the Parashoea chinensis Forest in Xishauangbanna for 15 Years

作　　者：曾辉[1] 杜凡[1] 

机构地区：[1]西南林学院,云南昆明650224

出　　处：《安徽农业科学》2009年第10期4668-4669,4681,共3页Journal of Anhui Agricultural Sciences

基　　金：国家重点基础研究发展(973)计划--纵向岭谷区生态系统变化及西南跨境生态安全研究项目(2003CB415100)资助

摘　　要：以5块西双版纳望天树林固定样地15年来连续观测的资料为基础,对乔木层1993、1998、2003、2007年等不同年份的株数、丰富度、物种多样性指数、生态优热度、均匀度和胸高断面积等变化进行研究。结果表明,望天树群落的株数以较小的幅度减少,这是因胸高断面积的不断增加而引起的自然稀疏过程;而株数、丰富度、均匀度、物种多样性指数以及胸高断面积的变化体现了望天树群落还处于缓慢发展之中,但是已经接近顶级群落的演替阶段。The study researches changes of the tree number,richness,species diversity index,ecological dominance evenness and section area of breast height of the tree layer in the different year of 1993,1998,2003 and 2007 based on the continuous observation date to five fixed sample plots of Parashorea chinensis forest in Xishauangbanna for 15 years.The result shows that tree number of Parashorea chinensis community decreases to a less amplitude for a natural rarefaction patter,induced by the increasing of the section area of breast height.And the changes of the tree number,richness,species diversity index,ecological dominance,evenness and section area of breast height reflect the Parashorea chinensis community is still at the stage of slow development,but it has already approached to the succession stage of climax community.

关 键 词：株数 丰富度 SHANNON-WIENER指数 Simpson优势度指标 Pielou均匀度指数 胸高断面积 

分 类 号：S718.54[农业科学—林学]