云南省余甘子灌丛生态系统生物量分配特征  

Biomass Distribution Characteristic in Phyllanthus emblica Shrub Ecosystem in Yunnan Province

作　　者：巩合德[1] 杜兰兰[1] 尹华军[2] 尹春英[2] 

机构地区：[1]西南林业大学生态旅游学院,昆明650224 [2]中国科学院成都生物研究所,成都610041

出　　处：《世界科技研究与发展》2012年第4期607-610,共4页World Sci-Tech R&D

基　　金：中国科学院战略性先导科技专项子专题(XDA050503030201);云南省应用基础研究面上项目(2010CD111)资助

摘　　要：采用样地调查的方法,在余甘子分布较典型地区按径级大小收获30株余甘子,并按照根、茎和叶等器官分别计算。研究结果表明:1)余甘子各器官的生物量分配为茎>根>叶;2)余甘子的基径和冠幅面积与余甘子各器官生物量分配有着密切的关系,其中基径与生物量密切相关,拟合度最好R^2=0.943,其次为冠幅,R^2=0.741;植株高度与余甘子各器官生物量分配相关性最差,R^2=0.359;3)根据R^2大小,可得知,以基径模拟余甘子生物量的最佳模型是多项式模型,以冠幅面积模拟则是幂函数模型最佳。A sample survey method is used to harvest more than 30 plants of P. emblica and measure their biomass according to the roots, stems and leaves organs respectively in the typical area in Yunnan province. The ranking order of P. emblica biomass was stem 〉 root 〉 leaf. The basal stem diameter, crown area of P. emblica and the biomass accumulation are closely correlated. And the basal stem diameter has the best fitting degree （R2 = 0. 943 ） , followed by crown area （R2 = 0. 741 ）. The height and the biomass allocation have the slight relationship （R^2 =0. 359）. According to the R2 size,the best biomass simulafion model of basal stem diameter is polynomial model,with crown area as the power function model.

关 键 词：余甘子 生物量 模型 

分 类 号：S181[农业科学—农业基础科学]