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首页> 外文期刊>Ecological research >Allometric scaling among tree components in Pinus massoniana stands with different sites
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Allometric scaling among tree components in Pinus massoniana stands with different sites

机译：马尾松林木成分间的异速生长比例不同

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摘要

The WBE model was used to predict intraspe-cific scaling relationships among mean branch, needle, stem, root, and above-ground masses across eight stands of Pinus massoniana to test whether the scaling exponent was (1) dependent on site and (2) in accordance with WBE theory. The results showed that mean stem and root masses as well as mean above-ground and root masses scaled in a near-isometric manner across sites, except at two sites, which exhibited an exponent slightly less than unity. Mean needle mass scaled as 3/4 power of mean stem mass, except at one site, which exhibited an exponent slightly higher than 3/4. Mean branch mass scaled isometrically with mean stem mass at each site. These results supported the WBE theory. However, mean branch mass across sites scaled neither as 3/4 nor 1 power of mean stem mass, indicating that the scaling relationship predicted by WBE theory for these two components did not hold in P. massoniana stands.
机译：WBE模型用于预测马尾松八个林分的平均分支，针，茎，根和地上质量之间的种内缩放比例关系，以测试缩放比例指数是否（1）取决于位置和（2）按照WBE理论。结果表明，除两个部位外，其他部位的茎和根的平均质量以及地上和根的平均质量均以近等轴测的方式缩放，其中两个部位的指数略小于单位。平均针头质量缩放为平均茎干质量的3/4幂，但在一个部位除外，该部位的指数略高于3/4。平均分支质量与每个位置的平均茎质量等轴测。这些结果支持了WBE理论。然而，跨位点的平均分支质量既不按平均茎质量的3/4也不按1的幂进行缩放，这表明WBE理论预测的这两个成分的缩放关系在马尾松中不成立。

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  • 来源
    《Ecological research》 |2013年第2期|327-333|共7页
  • 作者

    Li Xue; Ganwen Lie; Guangchao Lu; Yiruo Shao;

  • 作者单位

    College of Forestry, South China Agricultural University, Guangzhou 510642, People's Republic of China;

    College of Forestry, South China Agricultural University, Guangzhou 510642, People's Republic of China;

    College of Forestry, South China Agricultural University, Guangzhou 510642, People's Republic of China;

    College of Forestry, South China Agricultural University, Guangzhou 510642, People's Republic of China;

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  • 正文语种 eng
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  • 关键词

    allometry; biomass partitioning pattern; scaling exponent; tree component; WBE theory;

    机译：异速生物量分配模式缩放指数;树组件;WBE理论;

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