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当前位置: 首页 > 文章 > Pilodyn评估大花序桉活立木木材基本密度 桉树科技 2013 (3) 39-45
Position: Home > Articles > Predicting Basic Density in Standing Trees of Eucalyptus cloeziana Using Pilodyn Eucalypt Science & Technology 2013 (3) 39-45

Pilodyn评估大花序桉活立木木材基本密度

作  者：
李昌荣;周维;陈健波;项东云;吴兵;陈东林
单  位：
广西国有东门林场;广西林业科学研究院国家林业局中南速生材繁育实验室广西优良用材林资源培育重点实验室
关键词：
大花序桉;Pilodyn;木材基本密度;相关性
摘  要：
以广西东门林场33株17年生大花序桉为研究对象,测定活立木南北向Pilodyn测定值,生长锥钻取过髓心南北向木芯,木芯分为内部、中部、外部3部分测定木材基本密度,Pilodyn测定值与木材基本密度建立的回归方程。结果表明:指数函数方程拟合效果最好;Pilodyn测定值与树干外部基本密度呈极显著的负相关关系,树干外部决定系数R2值(0.568)最大,且回归方程拟合度好;Pilodyn测定值与中部基本密度呈显著的负相关关系,与内部基本密度负相关关系不显著;南向的回归方程拟合度好于北向。预测模型的建立,为今后快速无损评估活立木木材基本密度提供新的方法。
译  名：
Predicting Basic Density in Standing Trees of Eucalyptus cloeziana Using Pilodyn
作  者：
LI Chang-rong;ZHOU Wei;CHEN Jian-bo;XIANG Dong-yun;WU Bin;CHEN Dong-lin;Guangxi Forestry Research Institute, Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation, Key Laboratory of Central South Fast-growing Timber Cultivation of Forestry Ministry of China;Guangxi Dongmen State-owned Forest Farm;
关键词：
Eucalyptus cloeziana;;Pilodyn;;basic density;;correlation
摘  要：
Thirty–three Eucalyptus cloeziana trees were sampled at age 17 years in a field test located at Dongmen Forest Farm of Guangxi, pilodyn pin penetration readings were taken in bark windows located in north and south directions to align with the direction of increment core sampling for basic density, the increment core samples were cut into equidistant inner, middle and outer radial segments for basic density assessment. The results showed that the exponential function equation was the best regression equation; it was observed that very significantly negative correlations between Pilodyn penetration and outer basic density, it was the best prediction equation with the coefficient of determination(R2=0.568); there were significantly negative correlations between Pilodyn penetrations and middle basic density, negative correlations between Pilodyn penetrations and inner basic density; the predicted regression equation of south was better than the north. The predicted egression equation is a quick and non-destructive way for estimating basic density of standing trees.

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