林业工程学报2016，Vol.1Issue(6)：17-22,6.DOI:10.13360/j.issn.2096-1359.2016.06.003
蒙古栎抗弯弹性模量多模型共识的近红外检测方法
Determination of modulus of elasticity for Quercus mongolica using near-infrared spectroscopy based on consensus model
摘要
Abstract
Near⁃infrared ( NIR ) spectroscopy was used to examine the modulus of elasticity ( MOE ) for Quercus mongolica wood and a model using global and neighborhood( GN) distance to select samples and consensus PLS( CPLS) was proposed. The NIR spectra were collected in the range of 900-1 700 nm on the radial and tangential surfaces of wood samples. Initially, first derivative combined with the S⁃G smooth method was used to pre⁃process. Then, the global and neighborhood Mahalanobis distance was calculated to eliminate the abnormal samples and divide calibration and pre⁃diction sets automatically. Finally, each sub⁃sets of PLS model was combined to establish CPLS, and the average values were reported as the examined MOE values. The samples with a size of 300 mm×20 mm×20 mm (135 in total) and with⁃out defects were used, and 12 abnormal samples were eliminated during the examination. The 78 samples were used for the calibration set, and 45 samples were for the validation set. The results showed that the first derivative can eliminate the influence of gentle area, and S⁃G can inhibit the irrelevant absorption peak. With the correlation of 0�85, RPD of 1�93, and improved stability, the method combined with GN method and CPLS model was better than traditional PLS. However, RPD was lower than 2�5, indicating that the method can perform well in the preliminary analysis rather than the accurately quantitative analysis.关键词
蒙古栎/近红外/抗弯弹性模量/GN样本优选/CPLS多模型共识Key words
Quercus mongolica/near-infrared spectroscopy/modulus of elasticity/GN samples selection/CPLS consen-sus model分类
农业科技引用本文复制引用
张怡卓,苏耀文,李超,门洪生,何睿..蒙古栎抗弯弹性模量多模型共识的近红外检测方法[J].林业工程学报,2016,1(6):17-22,6.基金项目
国家林业局“948”项目（2015－4－52）；黑龙江省省院合作项目（YS15A03）。 （）
