Conversion of Norway spruce (Picea abies (L.) H. Karst.) tree stem volume to volumes of produced logging residues and wood chips

IF 3 2区农林科学 Q1 FORESTRY

Forestry Pub Date : 2023-02-14 DOI:10.1093/forestry/cpad003

Jiří Dvořák, Martin Jankovský, Mariusz Kormanek, Pavel Natov, Pavel Straka

{"title":"Conversion of Norway spruce (<i>Picea abies (L.) H. Karst.</i>) tree stem volume to volumes of produced logging residues and wood chips","authors":"Jiří Dvořák, Martin Jankovský, Mariusz Kormanek, Pavel Natov, Pavel Straka","doi":"10.1093/forestry/cpad003","DOIUrl":null,"url":null,"abstract":"Abstract As a renewable fuel, logging residues, as well as other dendromass, are in high demand. On the other hand, they can serve as a natural fertilizer and stabilize biodiversity in forest ecosystems. Therefore, they need to be used rationally, with due care for the volumes extracted from a particular stand. The volume of logging residues is difficult to measure; thus, foresters need a tool to estimate it, ideally via a simple method based on easily measurable parameters. Conversion factors, based on tree stem volume can serve this purpose. In this study, we develop such conversion factors for thinnings of Norway spruce (Picea abies (L.) H. Karst.) stands. First, we analyzed the relationship between the tree stem volume (ranging between 0.03 and 0.44 m3 stem−1) and the volumes of related logging residues or wood chips via linear regression and correlation analysis. Then, we assessed the significance of differences between volumes of logging residues or wood chips for trees in the five relevant stem volume classes and determined appropriate conversion factors. The conversion factors for wood chips ranged between 1.37 loose cubic meters of logging residue per cubic meter of timber in the largest stem volume class to 2.17 for the smallest stem volume class. The model, on which the conversion factors were based had a coefficient of determination of 0.88. Conversion to logging residue volume yielded factors ranging from 2.2 stacked cubic meters per cubic meter of timber for the largest stem volume class to 10.2 in the smallest stem volume class. The coefficient of determination of the underlying model was 0.69. The conversion factors are based on sufficiently accurate models and can be used in practical forestry for planning purposes, recordkeeping, and remuneration of loggers.","PeriodicalId":12342,"journal":{"name":"Forestry","volume":"8 1","pages":"0"},"PeriodicalIF":3.0000,"publicationDate":"2023-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Forestry","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1093/forestry/cpad003","RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"FORESTRY","Score":null,"Total":0}

引用次数: 0

Abstract

Abstract As a renewable fuel, logging residues, as well as other dendromass, are in high demand. On the other hand, they can serve as a natural fertilizer and stabilize biodiversity in forest ecosystems. Therefore, they need to be used rationally, with due care for the volumes extracted from a particular stand. The volume of logging residues is difficult to measure; thus, foresters need a tool to estimate it, ideally via a simple method based on easily measurable parameters. Conversion factors, based on tree stem volume can serve this purpose. In this study, we develop such conversion factors for thinnings of Norway spruce (Picea abies (L.) H. Karst.) stands. First, we analyzed the relationship between the tree stem volume (ranging between 0.03 and 0.44 m3 stem−1) and the volumes of related logging residues or wood chips via linear regression and correlation analysis. Then, we assessed the significance of differences between volumes of logging residues or wood chips for trees in the five relevant stem volume classes and determined appropriate conversion factors. The conversion factors for wood chips ranged between 1.37 loose cubic meters of logging residue per cubic meter of timber in the largest stem volume class to 2.17 for the smallest stem volume class. The model, on which the conversion factors were based had a coefficient of determination of 0.88. Conversion to logging residue volume yielded factors ranging from 2.2 stacked cubic meters per cubic meter of timber for the largest stem volume class to 10.2 in the smallest stem volume class. The coefficient of determination of the underlying model was 0.69. The conversion factors are based on sufficiently accurate models and can be used in practical forestry for planning purposes, recordkeeping, and remuneration of loggers.

查看原文本刊更多论文

挪威云杉(Picea abies)的转化H.喀斯特)树木的茎体积与产生的伐木残留物和木屑的体积之比

摘要:作为一种可再生燃料，伐木废弃物和其他树木材料的需求量很大。另一方面，它们可以作为天然肥料，稳定森林生态系统的生物多样性。因此，它们需要合理使用，并适当注意从特定的支架中提取的体积。测井剩余物体积难以测量;因此，林务人员需要一种工具来估计它，最好是通过一种基于易于测量的参数的简单方法。基于树干体积的转换因子可以达到这个目的。在本研究中，我们开发了挪威云杉(Picea abies (L.))疏林的转换因子。喀斯特林。首先，我们通过线性回归和相关分析，分析了树干体积(0.03 ~ 0.44 m3茎−1)与相关采伐残留物或木屑体积之间的关系。然后，我们评估了5个相关茎体积类树木的伐木残留物或木屑体积之间差异的显著性，并确定了适当的转换因子。木屑的换算系数在每立方米木材中最大茎体积级为1.37松散立方米，最小茎体积级为2.17。以转换因子为基础的模型的决定系数为0.88。换算成伐木残渣体积，得到的系数范围从最大茎体积类的2.2堆积立方米/立方米木材到最小茎体积类的10.2堆积立方米/立方米木材。基础模型的决定系数为0.69。换算系数基于足够精确的模型，可用于实际林业的规划、记录保存和伐木工人的报酬。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Forestry 农林科学-林学

CiteScore

6.70

自引率

7.10%

发文量

审稿时长

12-24 weeks

期刊介绍： The journal is inclusive of all subjects, geographical zones and study locations, including trees in urban environments, plantations and natural forests. We welcome papers that consider economic, environmental and social factors and, in particular, studies that take an integrated approach to sustainable management. In considering suitability for publication, attention is given to the originality of contributions and their likely impact on policy and practice, as well as their contribution to the development of knowledge. Special Issues - each year one edition of Forestry will be a Special Issue and will focus on one subject in detail; this will usually be by publication of the proceedings of an international meeting.