摘要
利用近红外光谱和X射线衍射法对木材的微纤丝角进行了快速预测。微纤丝角是影响木材性质的最重要的物理量之一,木材资源利用和林木品质改良都要求能快速、方便地测定木材的微纤丝角。该实验首先利用X射线衍射仪,快速测量和计算出154个杉木木材样品的微纤丝角。然后,依据木材不同成分在近红外区的不同吸收特性,在近红外光谱数据与X射线衍射仪测定的微纤丝角之间建立相关模型。结果表明,二者之间具有很好的相关性,其校正模型和预测模型的相关系数(r2)分别达到0.867和0.816。
In the present paper, near infrared （NIR） spectroscopy and X-ray diffraetometry were used to rapidly predict the microfibril angle （MFA）. MFA is one of the most important factors affecting wood properties. Wood resource utilization and tree improvement programs require cost-effective methods for the rapid analysis of thousands of samples. In the experiment, the average MFA of each sample were rapidly measured by X-ray scanning diffractometry. Then, the PLS model was built between NIR data and MFA by the X-ray measured. As a result, a very strong linear relationship has been found between NIR spectra fitted and X-ray measured, and the coefficients （r^2 ） of calibration and prediction models were 0. 867 and 0. 816 respectively.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2006年第7期1230-1233,共4页
Spectroscopy and Spectral Analysis
基金
国家林业局"948"引进项目"人工林木材的NIR材性预测及增值利用"(2003-4-27)项目资助
关键词
微纤丝角
近红外光谱
X射线衍射
Microfibril angle （MFA）
Near infrared （NIR） spectroscopy
X-ray diffractometry
作者简介
江泽慧，女，1938年生，中国林业科学院教授
通讯联系人
