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Multivariate Analysis of the Brinell Hardness of Silver Birch (Betula pendula Roth.) Wood in Poland
Forests ( IF 2.9 ) Pub Date : 2021-09-25 , DOI: 10.3390/f12101308 Hubert Lachowicz , Rafał Wojtan , Antons Seleznovs , Jānis Lāceklis-Bertmanis , Aivars Kaķītis , Aleksandra Krystyna Giedrowicz
Forests ( IF 2.9 ) Pub Date : 2021-09-25 , DOI: 10.3390/f12101308 Hubert Lachowicz , Rafał Wojtan , Antons Seleznovs , Jānis Lāceklis-Bertmanis , Aivars Kaķītis , Aleksandra Krystyna Giedrowicz
An analysis was undertaken of the Brinell hardness of silver birch wood and its dependence on stand location, tree age, tree thickness and forest habitat type, and the interactions between these factors. Wood was obtained from 12 forest districts throughout Poland, from trees aged approximately 30, 50, and 70 years. A total of 51 study plots was established, from which 306 trees were taken. Hardness was measured on three surfaces (transverse, radial, and tangential sections) for 4777 samples, giving a total of 14,331 measurements. It was shown that the hardness of silver birch wood in Poland is significantly influenced by location, tree age, tree thickness, and habitat type, and by interactions between those factors. Habitat type was not shown to affect radial hardness, except in the case of Giżycko forest district. For the whole of the analysed material, the mean hardness on a transverse section was calculated as 66.26 MPa, corresponding to a very hard wood on Mörath’s scale, whereas the values for the longitudinal sections (radial 44.06 MPa, tangential 44.02 MPa) correspond to a soft wood.
中文翻译:
波兰银桦(Betula pendula Roth.)木材布氏硬度的多元分析
对白桦木的布氏硬度及其对林分位置、树龄、树木厚度和森林栖息地类型的依赖性以及这些因素之间的相互作用进行了分析。木材来自波兰各地的 12 个林区,树龄约为 30、50 和 70 年。共建立了51个研究样地,从中采集了306棵树。对 4777 个样品的三个表面(横向、径向和切向截面)的硬度进行了测量,总共进行了 14,331 次测量。结果表明,波兰白桦木的硬度受位置、树龄、树厚度和栖息地类型以及这些因素之间的相互作用的显着影响。除了 Giżycko 森林区之外,栖息地类型并未显示出影响径向硬度。
更新日期:2021-09-27
中文翻译:
波兰银桦(Betula pendula Roth.)木材布氏硬度的多元分析
对白桦木的布氏硬度及其对林分位置、树龄、树木厚度和森林栖息地类型的依赖性以及这些因素之间的相互作用进行了分析。木材来自波兰各地的 12 个林区,树龄约为 30、50 和 70 年。共建立了51个研究样地,从中采集了306棵树。对 4777 个样品的三个表面(横向、径向和切向截面)的硬度进行了测量,总共进行了 14,331 次测量。结果表明,波兰白桦木的硬度受位置、树龄、树厚度和栖息地类型以及这些因素之间的相互作用的显着影响。除了 Giżycko 森林区之外,栖息地类型并未显示出影响径向硬度。