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采用皆伐法对南岭小坑800 m2小红栲-荷木次生群落(24 a)的生物量进行实测,并建立了生物量回归模型,分析群落地上部总生物量(AGB)在森林各层次、各树种及乔木层各器官中的分配规律.结果表明:在亚热带次生常绿阔叶林,构建混合树种生物量模型的标准木数量最好在12株以上.基于伐倒实测265株阔叶乔木树木的群落混合阔叶树种地上生物量模型为:AGB=0.128D2.372和AGB=242.331(D2H)0.947,并且获得小红栲、荷木和萌条杉木单个树种的生物量模型.群落地上部总生物量为115.20 t·hm-2,其中,乔木层和下木层分别为111.25和1.01 t·hm-2,层间植物0.36 t·hm-2,凋落物层2.58 t·hm-2.小红栲和荷木分别占乔木层地上部总生物量的39.1%和28.7%.树干和枝叶生物量分别占乔木层地上部总生物量的81.0%和19.0%.
The clear cutting method was used to measure the biomass of the small red mulberry - koreana secondary community (24 a) in Nanling pit of 800 m2. The biomass regression model was established to analyze the biomass of aboveground biomass (AGB) The results showed that in the subtropical secondary evergreen broad-leaved forest, it is better to construct more than 12 standard wood species for the mixed tree species biomass model based on the measured 265 The aboveground biomass models of mixed broadleaved tree species were as follows: AGB = 0.128D2.372 and AGB = 242.331 (D2H) 0.947, and the biomass models of single tree species were obtained. The total biomass of the above-ground part of the community was 115.20 t · hm-2, in which, the tree layer and the subalpine layer were 111.25 and 1.01 t · hm-2, 0.36 t · hm-2 in the intercropping plant and 2.58 t · hm in the litter layer -2 respectively.The percentage of trunk and branch leaf biomass accounted for 81.0% and 19.0% of the total biomass of above-ground part of arbor layer respectively.