摘要:根据 1,2,3,5,8a 共 5 个不同年龄的 15 块 1000 m 2 尾巨桉样地(3 次重复) 调查资料,利用 18 株不同年龄和径阶的样木数 据,建立以胸径( D) 为单变量的生物量回归方程。 采用样木回归分析法( 乔木层) 和样方收获法( 灌木层、草本层、地上凋落物) 获取不同林龄尾巨桉人工林的生物量,分析了其组成、分配及不同林龄生物量的变化趋势。 结果表明:林分总生物量随林龄而 Abstract: To explore biomass dynamics and its allocation in Eucalyptus urophylla伊E. grandis plantations at different stand ages (1, 2, 3, 5, 8a) , fifteen plots with an area of 20 m伊50 m each, were constructed in Guangxi, southwest China. The biomass of single variable regression equation for DBH ( diameter at breast height) was established based the data of 18 sample trees of E. urophylla伊E. grandis with different ages and DBH. Regression analysis of sample trees in arbor layer and harvest method in quadrats for shrubs, herbs and litterfall layers, were applied to calculate the biomass of Eucalyptus 0 4 2 5 摇 生摇 态摇 学摇 报摇 摇 摇 34 卷摇 2 5 摇 18 期 摇 摇 摇 付威波摇 等:不同林龄尾巨桉人工林的生物量及其分配特征 摇
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