Preliminary Study of Wood Species Identification by Nir Spectroscopy (original) (raw)

A method for determination of hardwood wood species in chips form by NIR refl ectance spectroscopy has been investigated. A series of measurements on chips from seven wood species (beech, acacia, hornbeam, ash-tree, aspen, birch and cherry) with various, controlled amounts of moisture, has been carried out and the spectra were subjected to discriminant analysis (PCA). Wet wood chips had higher rates of successful identifi catio as compared to wood chips, probably due to signifi cant variation of moisture content from species to species rather than minute diff erences in chemical composition. Acacia, birch, hornbeam and aspen were identifi ed with high accuracy. Low identifi catio accuracy has been obsrved with cherryd ash-tre. Th e predicted versus actual relationship for all tested wood species is linear with a coeffi cient of determination R 2= 0,8054.