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首页> 外文期刊>Forestry >The relationship between standing tree acoustic assessment and timber quality in Scots pine and the practical implications for assessing timber quality from naturally regenerated stands.
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The relationship between standing tree acoustic assessment and timber quality in Scots pine and the practical implications for assessing timber quality from naturally regenerated stands.

机译：常设松树声学评估与苏格兰松木材质量之间的关系，以及从天然林分中评估木材质量的实际意义。

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摘要

This paper describes studies that were conducted to test the hypotheses that acoustic tools provide reliable non-destructive predictions of mechanical properties of Scots pine (Pinus sylvestris) and that these allow comparisons of the timber quality between stands with different silvicultural histories. Acoustic testing was carried out in two plantations (Mount High and Seafield Estate) and one naturally regenerated stand (Glengarry Forest) in North Scotland. A total of 100 trees were assessed at Mount High and Seafield Estate and 11 trees were felled for cutting into 40 small clear specimens. These were then subjected to static three-point bending tests. Linear regression analysis demonstrated a good correlation between acoustic velocity and modulus of elasticity (MoE) (R2=0.53) and between acoustic velocity and modulus of rupture (MoR) (R2=0.59). A non-linear model was applied to take into account the effect of age on MoE (R2=0.58) and MoR (R2=0.54), and the data from all three sites were compared taking into account the biases that could be attributable to differences in age. The predicted mean MoE and MoR values indicated that the mechanical properties of the clear wood from the naturally regenerated trees are at least comparable with those from the plantation-grown trees.
机译：本文介绍了为验证以下假设而进行的研究：声学工具可对樟子松（Pinus sylvestris）的机械性能提供可靠的非破坏性预测，并且可以比较具有不同造林历史的林分之间的木材质量。在北苏格兰的两个人工林（高山和海菲尔德庄园）和一个自然再生林（Glengarry森林）中进行了声学测试。在Mount High和Seafield Estate评估了总共100棵树木，砍伐了11棵树木以切成40个小的透明标本。然后对它们进行静态三点弯曲测试。线性回归分析表明，声速与弹性模量（MoE）（R2 = 0.53）之间以及声速与断裂模量（MoR）（R2 = 0.59）之间具有良好的相关性。应用了非线性模型，以考虑年龄对MoE（R2 = 0.58）和MoR（R2 = 0.54）的影响，并且比较了所有这三个地点的数据，并考虑了可能归因于差异的偏见在年龄上。预测的平均MoE和MoR值表明，天然再生树木的透明木材的机械性能至少与人工林种植的树木的机械性能相当。

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