| 不同树龄三倍体毛白杨生物量分布规律 |
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| 引用本文： | 宋曰钦,翟明普,贾黎明.不同树龄三倍体毛白杨生物量分布规律[J].东北林业大学学报,2010,38(1). |
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| 作者姓名： | 宋曰钦 翟明普 贾黎明 |
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| 作者单位： | 省部共建森林培育与保护教育部重点实验室(北京林业大学),北京,100083;省部共建森林培育与保护教育部重点实验室(北京林业大学),北京,100083;省部共建森林培育与保护教育部重点实验室(北京林业大学),北京,100083 |
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| 基金项目： | “十一五”科技支撑项目(2006BAD3202B-2) |
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| 摘 要： | 以5个不同树龄、相同密度及管理措施的三倍体毛白杨纸浆林为对象,研究了其生物量、生物量分配及经济生物量与测树因子之间的关系,结果表明:不同树龄的三倍体毛白杨单株生物量之间存在显著差异,生物量与树龄之间以线性方程y=8.929 3x-8.278 4为最优,R2的值达到0.929 7;林木生物量在不同器官间的分配随树龄增大发生变化,干的生物量所占比率从造林的当年占总生物量的44.10%上升到68.44%,枝的生物量所占比率从2.14%上升到10.83%,根的生物量所占比率基本在5%左右,叶的生物量所占比率从8.93%下降到4.76%,而根桩的生物量所占比率从39.20%下降到8.58%;经济生物量与胸径及D2H之间以指数形式的拟合最优,方程分别为y=0.177 1D2.122 4、y=0.130 4(D2H)0.732,相关系数分别为R2=0.995 3、R2=0.994 7。
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| 关 键 词： | 杨树 三倍体毛白杨 纸浆林 经济生物量 |
Biomass Distribution of Triploid Populus tomentosa at Different Ages |
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| Song Riqin,Zhai Mingpu,Jia Liming.Biomass Distribution of Triploid Populus tomentosa at Different Ages[J].Journal of Northeast Forestry University,2010,38(1). |
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| Authors: | Song Riqin Zhai Mingpu Jia Liming |
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| Institution: | Song Riqin,Zhai Mingpu,Jia Liming(Key Laboratory for Silviculture , Conservation,Ministry of Education(Beijing Forestry University),Beijing 100083,P.R.China) |
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| Abstract: | An experiment was conducted to study the biomass,biomass distribution,and relationship between biomass and measurement factors using five triploid Populus tomentosa plantations of different ages with the same density under the same management measures as testing objects.Results show that the whole plant biomass was significantly different between P.tomentosa trees of different ages,and the relationship between biomass and tree age could be described by a linear equation(R2=0.9297).The biomass distribution i... |
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| Keywords: | Poplar Triploid Populus tomentosa Pulp plantations Biomass |
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