Within-Tree Variation of Chemical Properties of <italic style="font-style: italic">Acacia</italic> <italic style="font-style: italic">melanoxylon</italic> Wood

ZHOU Fan; FU Zong-ying; GAO Xin; ZHOU Yong-dong; YAN Ting-ting

doi:10.12326/j.2096-9694.2020046

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Within-Tree Variation of Chemical Properties of Acacia melanoxylon Wood
1.Research Institute of Wood Industry，Chinese Academy of Forestry，Beijing 100091，China
Vol. 35, Issue 3, Pages: 25-30(2021)
DOI： 10.12326/j.2096-9694.2020046

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周凡,付宗营,高鑫等.黑木相思木材化学性质株内变异研究[J].木材科学与技术,2021,35(03):25-30.

ZHOU Fan,FU Zong-ying,GAO Xin,et al.Within-Tree Variation of Chemical Properties of Acaciamelanoxylon Wood[J].Chinese Journal of Wood Science and Technology,2021,35(03):25-30.
周凡,付宗营,高鑫等.黑木相思木材化学性质株内变异研究[J].木材科学与技术,2021,35(03):25-30. DOI： 10.12326/j.2096-9694.2020046.

ZHOU Fan,FU Zong-ying,GAO Xin,et al.Within-Tree Variation of Chemical Properties of Acaciamelanoxylon Wood[J].Chinese Journal of Wood Science and Technology,2021,35(03):25-30. DOI： 10.12326/j.2096-9694.2020046.

摘要

研究我国黑木相思木材化学性质的株内变异规律，为其加工利用提供基础数据。对广东韶关产28 a黑木相思木材进行化学组成测定，其综纤维素（α纤维素、半纤维素）、酸不溶木质素和抽出物（冷水、热水、1%氢氧化钠、苯醇）的含量在株内纵向上的变异规律不明显；相较于边材，心材的综纤维素含量略低，酸不溶木质素含量略高，抽出物含量更高，pH值更低。实际加工利用中需考虑其心材和边材比例对原料化学组成的影响。

Abstract

The within-tree variation of wood chemical properties was evaluated for ,Acacia,melanoxylon, grown in China. The results showed that the longitudinal variation of the holocellulose (α cellulose and hemicellulose), acid-insoluble lignin, and extractive (cold water, hot water, 1% sodium hydroxide and benzene alcohol) contents was not significant. Compared with the sapwood, the heartwood contained slightly lower holocellulose (α cellulose and hemicellulose) contents, slightly higher acid-insoluble lignin contents, higher extractive contents, and a lower pH value. The effect of the proportion of heartwood and sapwood within the tree on chemical composition contents should be considered as a quality characteristic in the processing application of ,Acacia,melanoxylon, wood.

关键词

黑木相思化学性质纵向变异心材边材

Keywords

Acacia melanoxylonchemical propertylongitudinal variationheartwoodsapwood

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