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首页> 外文期刊>South-East European Forestry >Biomorphology of Spruce Trees as a Diagnostic Attribute for Non-Destructive Selection of Resonant Wood in a Forest
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Biomorphology of Spruce Trees as a Diagnostic Attribute for Non-Destructive Selection of Resonant Wood in a Forest

机译：云杉树的生物形态学作为森林中共振木的非破坏性选择的诊断属性

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Background and Purpose: Nowadays selection of resonant raw material in forests is not practically carried out; there are no standards and samples for a tree with such timber, and, consequently, rational target use of this unique natural material is not achieved. Thereof a lot of valuable wood remains in forests or is harvested for utilizing as general-purpose forest products or firewood. The research is focused on the studies of interrelation of resonant properties of wood and its biomorphological attributes such as crown diameter and height, trunk habitus, branchless zone extension, etc. Materials and Methods: Test material for the research of dendroacoustic parameters were cross-section radial cores 4.0 mm in diameter selected with an increment borer at breath height from 16 model trees after cutting them down. Simultaneously, diameters of trunks at relative heights (H) of 0.2Н, 0.5Н and 0.7Н, as well as branchless zone extension and tree crown parameters (its extension, first alive knot fastening height, etc.) were defined. Then, the interrelation was revealed between the biometric data of a tree trunk and average sound velocity measured across the trunk with UK-14П ultrasonic device at different relative heights. Results: The results submitted in this paper present practical value and assess the accuracy of standing spruce wood resonant properties' forecasting based on its ‘wood study portrait’ parameters. Conclusions: Acoustic properties of wood depend on biomorphology of a tree as well. The parameters of stem tapering, trunk volume and especially branchless zone extension and crown elevation have, to any extent, the greatest practical value for standing resonant raw material express diagnostics.
机译：背景与目的：如今，在森林中几乎没有选择共振原材料。没有关于使用这种木材的树木的标准和样品，因此无法实现这种独特天然材料的合理使用目标。其中许多有价值的木材残留在森林中，或被砍伐后用作通用林产品或木柴。这项研究的重点是木材的共振特性及其生物形态属性如冠直径和高度，树干习性，无分支区域延伸等的相互关系。材料和方法：用于研究树状声学参数的测试材料为横截面直径为4.0毫米的放射状岩心在砍伐后从16棵模型树的呼吸高度处选择了增加的钻r。同时，定义了相对高度（H）为0.2Н，0.5Н和0.7Н的树干直径，以及无分支区域扩展和树冠参数（其扩展，首次活结紧固高度等）。然后，揭示了树干的生物特征数据与使用UK-14П超声设备在不同相对高度处跨树干测得的平均声速之间的相互关系。结果：本文提交的结果具有实用价值，并基于其“木材研究肖像”参数评估了云杉立木共鸣特性的预测准确性。结论：木材的声学特性也取决于树木的生物形态。茎部逐渐变细，树干体积以及尤其是无分支区域延伸和冠冠高程的参数在任何程度上都对立式共生原材料表达诊断具有最大的实用价值。

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