毛环竹笋用林生物量结构调查分析

Investigation and analysis on the Biomass Structure of Phyllostachys meyeri Woods for Bamboo shoot

通过对毛环竹林分、单株生物量及其结构特征调查分析,结果表明:毛环竹林分生物量在一定范围内随着密度的提高而增大,在密度为10800～12900株·hm-2时生物量最大,地上部分可达到50t·hm-2以上,地下部分可达到30t·hm-2以上。各器官生物量分配为:地上部分生物量秆>枝>叶,其比例大致是6∶3∶2或2∶1∶1;地上部分>地下部分,其比例变化幅度在1 183～1 784之间。毛环竹单株生物量与胸径、竹高呈正相关,在生产实践中可用模型W=aDbHc进行估测,其精度达95%以上。

Investigation and analysis the Phyllostachys meyeri plant,the biomass of an individual one and the character of its structure,the result suggested:The biomass of Phyllostachys meyeri is positive relevant to its diameter breast-high and bamboo height.The biomass reaches the maximum when the degree of stocking is 10 800～12 900 plant per hectare,where that above ground may be more than 50 ton per hectare,while that underground part may be more than 30 ton per hectare,The distribution of biomass among different organs is:in the biomass above ground,stem>branch>leaf,with the ratio 6∶3∶2 or 2∶1∶1 approximately;and that above ground is larger than that underground,with the ratio varying from 1.183 to 1.784.In practice,the biomass of an individual Phyllostachys meyeri plant(all organs inclusive) can be estimated by using the model W=aD^bH^c,whose accuracy could be more than 95%.