西南林业大学学报2025，Vol.45Issue(1)：213-219,7.DOI:10.11929/j.swfu.202311014
Pilodyn在马尾松大径材活立木基本密度预测中的应用
Application of Pilodyn method in Predicting the Basic Density of Standing Trees of Pinus massoniana Large-diameter Wood
摘要
Abstract
The resistance value of Pinus massoniana large-diameter wood at a breast diameter of 35 years was measured using a Pilodyn instrument.The wood samples were divided into 3 age groups:inner(0-10 years),middle(11-20 years),and outer(21-35 years).Wood cores were collected in the north-south direction,passing through the pith,using a growth cone.The study analyzed the change in wood basic density in each age group,ex-amined the relationship between Pilodyn measured values and wood basic density,and established a Pilodyn pre-diction model.The results indicated that the basic density of P.massoniana large diameter wood initially de-creased and then increased from the pith to the outside.In all age groups,there was a significant or very signific-ant negative correlation between Pilodyn measurements and wood basic density.Notably,the correlation coeffi-cient for wood basic density(R)in 21-35 yerars group reached-0.807,with the correlation gradually weakening from the outer to the inner regions.Furthermore,there was a very significant positive correlation among wood ba-sic density in all age groups.The regression analysis yielded a coefficient of determination(R2)of 0.4315 for the regression equation established by Pilodyn and the average wood basic density across all ages.The regression equation for the wood basic density of the 21-35 year age group had the highest R2 value of 0.6535.These find-ings contribute to the understanding of the Pilodyn method's application in the rapid and non-destructive testing of wood basic density in large diameter P.massonianawood.关键词
马尾松/Pilodyn/年龄/木材/基本密度/无损检测Key words
Pinus massoniana/Pilodyn/age group/wood/basic density/non-destructive testing technology分类
农业科技引用本文复制引用
赵渊祥,吴明长,张俊,王好运,梁大曲,吴峰..Pilodyn在马尾松大径材活立木基本密度预测中的应用[J].西南林业大学学报,2025,45(1):213-219,7.基金项目
"十三五"国家重点研发计划项目(2017YFD0600302)资助 （2017YFD0600302）
"十四五"国家重点研发计划项目(2022YFD2201700)资助 （2022YFD2201700）
国家自然科学基金项目(32260406)资助. （32260406）
