Spectroscopy and Spectral Analysis, Volume. 32, Issue 7, 1785(2012)

Rapid Identification of Softwood and Hardwood by Near Infrared Spectroscopy of Cross-Sectional Surfaces

YANG Zhong*, LV Bin, HUANG An-min, LIU Ya-na, and XIE Xu-qin
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    The feasibility of wood identification of softwood and hardwood by near infrared spectroscopy (NIR) coupled with partial least squares discriminant analysis (PLS-DA) was investigated in the present paper. The near infrared spectra (780~2 500 nm) were collected from wood cross-section from one softwood species (Chinese fir) and one hardwood species (eucalyptus). The results show that: (1) The identification accuracy of the calibration samples predicted by the model based on NIR coupled the PLS-DA was 100%. The correlation coefficient between the NIR predicted category variable value and the true value was 0.990, and the SEC was 0.071; (2) The identification accuracy by the model based on the spectra with 780~1 100 nm wavelengths also was 100%, and the correlation coefficient and SEC were 0.990 and 0.070, respectively; (3) The identification accuracy for the test samples was 100%. It was suggested that NIR can be used to rapidly and accurately identify softwood and hardwood samples. It also provides a new approach to identifying wood species.

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    YANG Zhong, LV Bin, HUANG An-min, LIU Ya-na, XIE Xu-qin. Rapid Identification of Softwood and Hardwood by Near Infrared Spectroscopy of Cross-Sectional Surfaces[J]. Spectroscopy and Spectral Analysis, 2012, 32(7): 1785

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    Paper Information

    Received: Nov. 30, 2011

    Accepted: --

    Published Online: Sep. 26, 2012

    The Author Email: Zhong YANG (zyang@caf.ac.cn)

    DOI:10.3964/j.issn.1000-0593(2012)07-1785-05

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