幼林与原生林再生金皮树自然耐久性指标研究

IF 2.2 3区 农林科学 Q2 FORESTRY Holzforschung Pub Date : 2023-11-15 DOI:10.1515/hf-2023-0057
Lesley P. Francis, Kate E. Semple, Babar Hassan, Jeffrey J. Morrell
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引用次数: 0

摘要

了解新兴人工林硬木资源的耐久性对于优化其生产和利用具有重要意义。本研究比较了12 ~ 13年生人工林和原生林再生木的木材密度、提取物含量和抗腐性。人工林和原生林树木的密度从髓到树皮都有所增加。人工林木材的内心材密度显著低于原生林再生木材。人工林和原生林再生树外心材的总提取物含量相当,而原生林内心材的提取物含量明显高于原生林。室内腐变试验表明,人工林和原生林再生金桃的所有心材区都对白腐病有较强的抗腐性。然而,人工林木材的内心材易受褐腐菌ostreiformis的腐蚀。结果表明,当从原始森林转移到人工林资源时,木材质量参数的潜在变化需要考虑,这些人工林资源在较年轻的年龄采伐并进行管理以更快地生产木材。
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Natural durability indicators in young plantation and native forest regrowth Gympie messmate (Eucalyptus cloeziana)
Understanding the durability of emerging plantation hardwood resources is important for optimising their production and use. This study compared timber density, extractives content and decay resistance in 12–13-year-old plantation and native forest regrowth Gympie messmate (Eucalyptus cloeziana) trees. Density increased from pith to bark for both plantation and native forest trees. Inner heartwood density of the plantation timber was significantly lower than that of the native forest regrowth timber. While the total extractives content of the outer heartwood was comparable in the plantation and native forest regrowth trees, the inner heartwood of the latter contained significantly greater extractives levels. Laboratory decay tests showed that all heartwood zones of plantation and native forest regrowth Gympie messmate were resistant to decay by the white rot Pycnoporus coccineus. The inner heartwood of the plantation timber was, however, susceptible to decay by the brown rot Fomitopsis ostreiformis. The results illustrate the potential variations in wood quality parameters to be considered when moving from native forest to plantation resources that are harvested at a younger age and managed for more rapid wood production.
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来源期刊
Holzforschung
Holzforschung 工程技术-材料科学:纸与木材
CiteScore
4.60
自引率
4.20%
发文量
83
审稿时长
3.3 months
期刊介绍: Holzforschung is an international scholarly journal that publishes cutting-edge research on the biology, chemistry, physics and technology of wood and wood components. High quality papers about biotechnology and tree genetics are also welcome. Rated year after year as one of the top scientific journals in the category of Pulp and Paper (ISI Journal Citation Index), Holzforschung represents innovative, high quality basic and applied research. The German title reflects the journal''s origins in a long scientific tradition, but all articles are published in English to stimulate and promote cooperation between experts all over the world. Ahead-of-print publishing ensures fastest possible knowledge transfer.
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