Abstract:In this research, hemicellulose contents of 78 wood meal samples of Acacia spp trees grown in Guangxi and another 33 wood meal samples of Acacia spp trees grown in Fujian were measured by wet chemistry. NIR spectra were also collected by a Bruker MPA spectrometer within 4 000-12 500 cm-1 of wavenumbers using a standard sample cup. Equations were developed using partial least squares (PLS) regression and cross validation for multivariate calibration in this study. High coefficients of determination (R2) and low root mean square errors of cross-validation (RMSECV) were obtained for hemicellulose content (R2=0.947, RMSECV=0.464) of Guangxi wood meal samples. Prediction produced high correlation coefficients between laboratory and predicted values, with R2 and RMSEP values being 0.925 and 0.455, respectively. A variable numbers of Fujian samples ranging from one to thirteen were used to enhance the Guangxi calibration so as to be widely used for routine assessment of wood chemistry. It was demonstrated that the addition of a single Fujian sample to the Guangxi calibration set was sufficient to greatly reduce predictive errors and that the inclusion of 3 Fujian samples in the Guangxi set was sufficient to give relatively stable predictive errors. The R2 is 0.904 and RMSEP is 0.759. The addition of different sets of 3 Fujian samples to the Guangxi calibration, however, caused predictive errors to vary between sets.
姚 胜,武国峰,姜亦飞,付晓东,吕红坤,苏 梅,蒲俊文* . 相思树聚戊糖含量近红外光谱分析模型的建立及修正[J]. 光谱学与光谱分析, 2010, 30(05): 1206-1209.
YAO Sheng, WU Guo-feng,JIANG Yi-fei, FU Xiao-dong, Lü Hong-kun, SU Mei, PU Jun-wen* . Extending Hemicelluloses Content Calibration of Acacia Spp Using NIR to New Sites . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(05): 1206-1209.
[1] YANG Zhong, JIANG Ze-hui, FEI Ben-hua, et al(杨 忠,江泽慧,费本华,等). Scientia Silvae Sincae(林业科学),2005,41(4):177.[2] HUANG An-min, JIANG Ze-hui(黄安民,江泽慧),World Forestry Research(世界林业研究),2007,20(1):49. [3] YAO Sheng, PU Jun-wen(姚 胜, 蒲俊文). Spectroscopy and Spectral Analysis(光谱学与光谱分析),2009, 29(4): 974. [4] YAN Yan-lu, ZHAO Long-lian, HAN Dong-hai, et al(严衍禄, 赵龙莲, 韩东海, 等). Elements and Application of Near Infrared Spectra Analysis (近红外光谱分析基础与应用). Beijing: China Light Industry Press(北京: 中国轻工业出版社), 2005. 1. [5] LIU Ze-chun, ZHANG Feng, XIE Wei(刘泽春, 张 峰, 谢 卫). Tobacco Science & Technology(烟草科技),2008, (5): 34. [6] Laurence R Schimleck, Peter D Kube, Carolyn A Raymond. Journal of Wood Chemistry and Technology, 2006, 26(4): 299.