Comparison of Pinus taeda L. wood property calibrations based on NIR spectra from the radial-longitudinal and radial-transverse faces of wooden strips
Comparison of Pinus taeda L. wood property calibrations based on NIR spectra from the radial-longitudinal and radial-transverse faces of wooden strips
复制标题
基于木条径向-纵向和径向-横向近红外光谱的火炬松木材特性校准比较
DOI：
--
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
R. Daniels
中科院分区：
文献类型：
--
作者：
L. Schimleck;Reinhard Stürzenbecher;Christian R. Mora;P. David Jones;R. Daniels
摘要当从增量核上切下径向条时，它可能以两个方向切割：平行于纵向管胞，即，径向-纵向（RL）条带（SilviScan样品的方向），或与管胞成90°的方向，即，径向-横向（RT）条带。这两种条带都可用于近红外（NIR）分析，但目前尚不清楚基于RT-面NIR光谱的校准与基于RL-面NIR光谱的校准相比如何。火炬松Pinus taeda L.（火炬松）RL条的特点是气干密度，微纤丝角（MFA），刚度和几个管胞形态特征。从匹配条的RL和RT面以10 mm增量收集NIR光谱，并用于开发每个属性的校准。一般而言，RL面近红外光谱给出了提供更强关系的校准。两组校准之间的差异很小，表明任何一个面都可以用于近红外分析。
Abstract When a radial strip is cut from an increment core it can potentially be cut with two orientations: parallel to longitudinal tracheids, i.e., a radial-longitudinal (RL) strip (the orientation of SilviScan samples), or at an orientation of 90° to the tracheids, i.e., a radial-transverse (RT) strip. Both strips could be used for near-infrared (NIR) analysis, but it is unknown how calibrations based on RT-face NIR spectra compare with those based on RL-face NIR spectra. A total of 20 Pinus taeda L. (loblolly pine) RL strips were characterized in terms of air-dry density, microfibril angle (MFA), stiffness and several tracheid morphological characteristics. NIR spectra were collected in 10-mm increments from the RL and RT faces of matching strips and used to develop calibrations for each property. In general, RL-face NIR spectra gave calibrations that provided stronger relationships. Differences between the two sets of calibrations were small, indicating that either face could be used for NIR analysis.