文献类型：期刊文献

中文题名：杂种落叶松木材主要化学成分与抗弯性能相关性

英文题名：Correlation between Primary Chemical Components and Bending Property of Hybrid Larch

作者：周凡[1] 周永东[1] 高鑫[1] 梁龙[2] 李珠[1] 向娥琳[1] 蒋佳荔[1]

第一作者：周凡

机构：[1]中国林业科学研究院木材工业研究所,北京100091;[2]中国林业科学研究院林产化学工业研究所,江苏南京210042

年份：2025

卷号：39

期号：6

起止页码：10-17

中文期刊名：木材科学与技术

外文期刊名：Chinese Journal of Wood Science and Technology

收录：;北大核心:【北大核心2023】；

基金：农业生物育种国家科技重大专项课题“纸浆材及结构材用松树木材性质与质量评价”(2023ZD0405905)。

语种：中文

中文关键词：杂种落叶松;化学成分密度;化学成分质量分数;抗弯性能;相关性

外文关键词：hybrid larch;chemical component density;mass fraction of chemical component;bending properties;correlation

分类号：S781.7;S791.22

摘要：以2个家系、3个树龄落叶松不同径向位置木材为研究对象,分析其主要化学成分与抗弯性能的相关性,并对比化学成分密度与化学成分质量分数两种指标表征的差异。结果表明,采用化学成分密度指标时,纤维素、半纤维素、木质素之间的相关性较化学成分质量分数指标的相关性更强,达到高度相关水平。在三大素与抗弯性能的相关性方面,化学成分密度指标优于化学成分质量分数,其中纤维素密度与抗弯强度(modulus of rupture,MOR)、抗弯弹性模量(modulus of elasticity,MOE)的线性拟合决定系数分别达0.86、0.83,明显优于纤维素质量分数(0.14、0.22)及木材密度(0.75、0.61)的拟合效果,表明其可作为评估抗弯性能的有效指标,尤其适用于微量或微创取样条件下的快速评估。
This study analyzed the correlation between the primary chemical components and the bending properties of larch wood from two interspecific hybrid families across three tree ages,sampled at different radial positions.A comparison was conducted between two characterization metrics:chemical component density and mass fraction.The results showed that the correlations among cellulose,hemicellulose,and lignin were consistently stronger when expressed as chemical component density,with all reaching a high correlation level.Chemical component density also outperformed mass fraction in revealing the relationships between the three components and the bending properties.In particular,the coefficients of determination for linear fits between cellulose density and bending modulus of rupture(MOR)and modulus of elasticity(MOE)were 0.86 and 0.83,respectively,which were significantly higher than those obtained for cellulose mass fraction(0.14 and 0.22)and wood density(0.75 and 0.61).Thus,cellulose density could serve as an effective indicator for the rapid and reliable assessment of larch wood bending properties,especially suitable for rapid assessment in the scenarios limited to microdestructive or minimal sampling.