Biomass Expansion Factors (BEFs) and Carbon Stock for Brant's Oak (Quercus brantii Lindl.) Forests in West-Iran

Y. Iranmanesh, H. Sohrabi, K. Sagheb‐Talebi, S. Hosseini, A. H. S. Kouchi
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引用次数: 2

Abstract

Investigating a tree’s biomass can provide basic information about forest carbon stock. The Biomass Expansion Factor (BEF) is a variable for estimating carbon stock of forests. The aim of this study was to analyse the Above Ground Biomass (AGB) allocation, developing the BEF and carbon stock for two vegetation forms of Brant’s Oak ( Quercus brantii Lindl.) based on forest inventory data. BEF is defined as the ratio of AGB to crown volume variables. The study data were taken from 30 trees that include 16 individual trees with single stem and 14 coppice shoots located in West-Iran. The trees selected were felled and separated into different components including: bole, main branches, lateral branches, twigs and leaves. The fresh weight of the trees was obtained with a portable hanging scale and several samples were taken from each tree component. The results of this study showed significant differences between component biomass proportions of the two vegetation forms of Brant’s Oak trees and determined average biomass and carbon content of the forms studied. We also conclude that BEF of Brant’s Oak could be improved by applying crown variables. According to the results, BEFs are tree-size dependent variables. Finally, this study indicates that age-dependent BEFs cannot be applied to conditions where stand development deviates from the conditions that in which the BEFs were developed.
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栎(Quercus brantii Lindl.)生物量膨胀因子(BEFs)与碳储量伊朗西部的森林
调查树木的生物量可以提供森林碳储量的基本信息。生物量扩展因子是估算森林碳储量的一个变量。基于森林清查资料,分析了两种植被形式的栎树地上生物量(AGB)分配、BEF和碳储量。BEF定义为AGB与冠体积变量的比值。研究数据取自伊朗西部的30棵树,其中包括16棵单根树和14棵小灌木林。所选择的树木被砍伐并分成不同的组成部分,包括:洞,主树枝,侧枝,小枝和叶子。用便携式吊秤测量树木的鲜重,并从每个树的组成部分取几个样本。研究结果表明,两种植被形态的白栎组分生物量比例存在显著差异,并确定了两种植被形态的平均生物量和碳含量。我们还得出结论,应用树冠变量可以提高布兰特栎树的BEF。根据结果,bef是树大小的因变量。最后,本研究表明,年龄相关的bef不能应用于林分发育偏离bef发育条件的情况。
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来源期刊
Annals of Silvicultural Research
Annals of Silvicultural Research Agricultural and Biological Sciences-Forestry
CiteScore
2.70
自引率
0.00%
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0
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