Near infrared spectroscopy for estimating wood basic density in Eucalyptus urophylla and Eucalyptus grandis

Gherardi Hein Paulo Ricardo, Maioli Campos Ana Carolina, Trugilho Paulo Fernando, Tarcisio Lima Jose, Chaix Gilles. 2009. Near infrared spectroscopy for estimating wood basic density in Eucalyptus urophylla and Eucalyptus grandis. Revista Cerne, 15 (2) : 133-141.

Quartile : Q4, Sujet : FORESTRY

Résumé : Wood basic density is indicative of several other wood properties and is considered as a key feature for many industrial applications. Near infrared spectroscopy (NIRS) is a fast, efficient technique that is capable of estimating that property. However, it should be improved in order to complement the often time-consuming and costly conventional method. Research on wood technological properties using near infrared spectroscopy has shown promising results. Thus the aim of this study was to evaluate the efficiency of near infrared spectroscopy for estimating wood basic density in both Eucalyptus urophylla and Eucalyptus grandis. The coefficients of determination of the predictive models for cross validation ranged between 0.74 and 0.86 and the ratio performance of deviation (RPD) ranged between 1.9 and 2.7. The application of spectral filter, detection and removal of outlier samples, and selection of variables (wavelength) improved the adjustment of calibrations, thereby reducing the standard error of calibration (SEC) and cross validation (SECV) as well as increasing the coefficient of determination (R2) and the RPD value. The technique of near infrared spectroscopy can therefore, be used for predicting wood basic density in Eucalyptus urophylla and Eucalyptus grandis.

Mots-clés Agrovoc : Eucalyptus grandis, Eucalyptus urophylla, bois, qualité, densité, spectroscopie infrarouge, technique de prévision, efficacité d'utilisation

Mots-clés géographiques Agrovoc : Minas Gerais

Classification Agris : K50 - Technologie des produits forestiers
U30 - Méthodes de recherche
F60 - Physiologie et biochimie végétale

Champ stratégique Cirad : Hors axes (2005-2013)

Auteurs et affiliations

• Gherardi Hein Paulo Ricardo, CIRAD-PERSYST-UPR Bois tropicaux (FRA)
• Maioli Campos Ana Carolina, UFLA (BRA)
• Trugilho Paulo Fernando, UFLA (BRA)
• Tarcisio Lima Jose, UFLA (BRA)
• Chaix Gilles, CIRAD-BIOS-UPR Génétique forestière (FRA) ORCID: 0000-0003-2015-0551

Source : Cirad - Agritrop (https://agritrop.cirad.fr/550752/)

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