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生物腐朽对湿地松木材力学性质影响的研究     被引量:5

Effects of biological decay on mechanical properties of slash pine wood

文献类型:期刊文献

中文题名:生物腐朽对湿地松木材力学性质影响的研究

英文题名:Effects of biological decay on mechanical properties of slash pine wood

作者:杨忠[1] 任海青[1] 江泽慧[1,2]

第一作者:杨忠

机构:[1]中国林业科学研究院木材工业研究所;[2]国际竹藤网络中心

年份:2010

期号:3

起止页码:146-149

中文期刊名:北京林业大学学报

外文期刊名:Journal of Beijing Forestry University

收录:CSTPCD;;北大核心:【北大核心2008】;CSCD:【CSCD2011_2012】;

基金:"十一五"国家科技支撑计划项目(2008BADA9B07);中央级公益性科研院所基本科研业务费专项(CAFINT2007C01)

语种:中文

中文关键词:湿地松;生物腐朽;腐朽时间;力学性质

外文关键词:Pinus elliottii Engelm.; biological decay; exposure time; mechanical properties

分类号:S718.23

摘要:由于生物腐朽可以引起木材结构的严重破坏,采用不同菌种和不同生物腐朽时间对湿地松木材的最大工作荷载(WML)、抗弯弹性模量(MOE)和抗弯强度(MOR)等力学性质的影响进行了研究。结果表明:白腐菌、褐腐菌2个菌种和腐朽时间都对木材力学性质的影响显著(α=0.05),其中白腐菌处理对木材力学性质的影响很小,而褐腐菌处理木材对木材力学性质的影响很大。腐朽木材失重率与各项力学性质之间的相关性分析表明:木材失重率与WML、MOE和MOR之间都呈显著负相关。褐腐试验的相关性均在α=0.01水平时显著(双尾检验),皮尔森相关系数达到-0.937以上;而白腐试验的相关性均在α=0.05水平时显著(双尾检验),皮尔森相关系数达到-0.788以上。
Biological decay can cause severe damage to wood structures.The effect of decay fungi and exposure time on work to maximum load(WML),modulus of elasticity(MOE) and modulus of rupture(MOR) of slash pine(Pinus elliottii) wood was investigated in this study.The results of analyses of variance show that the effect of fungi species and exposure time on the mechanical properties of wood were significant(at the 0.05 level).The reduction in mechanical wood properties caused by white-rot decay(Trametes versicolor) was not significant,whereas brown-rot decay(Gloeophyllum trabeum) caused a significant reduction in mechanical properties.A correlation analyses showed that there was significant negative correlation between weight loss and mechanical properties of decayed wood.The correlation between brown-rot decay treatment and mechanical properties was significant at the 0.01 level(2-tailed test) with a Pearson correlation coefficient of-0.937.The correlation of white-rot decay treatment with mechanical properties was significant at the 0.05 level(2-tailed test) with a Pearson correlation coefficient of about-0.788.

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