Use of a portable near infrared spectrometer for wood identification of four Dalbergia species from Madagascar

Clarel Raobelina Andry, Chaix Gilles, Razafimahatratra Andriambelo Radonirina, Rakotoniaina Sarobidy Pascal, Ramananantoandro Tahiana. 2023. Use of a portable near infrared spectrometer for wood identification of four Dalbergia species from Madagascar. Wood and Fiber Science, 55 (1) : 4-17.

Url - éditeur : https://wfs.swst.org/index.php/wfs/article/view/3158

Résumé : This study focused on the use of Near InfraRed (NIR) Spectroscopy to address the lack of tools and skills for wood identification of Dalbergia species from Madagascar. Two sample sets of 41 wood blocks and 41 wood cores belonging to four Dalbergia species (D. abrahamii, D. chlorocarpa, D.greveana, and D. pervillei) were collected in the northern and western regions of Madagascar. Sapwood and heartwood NIR spectra were measured onwood at 12% moisture content by using a portable VIAVI MicroNIR 1700 spectrometer. Four discrimination models corresponding to sapwood and heartwood of the two sample forms were developed using Partial Least Square Discriminant Analysis (PLSDA). Good accuracy of 83.3% and 81.8% were obtained from the heartwood-based PLSDA models respectively for wood blocks and wood cores samples. All D. chlorocarpa samples were well-classified by the two models. Results highlighted the potential of portable NIR Spectroscopy as a helpful tool tosupport sustain- able management and trade of Madagascar's Dalbergia species. Further studies are, however, needed for its operational use in identification routine.

Mots-clés Agrovoc : spectroscopie infrarouge, bois, propriété physicochimique, bois de coeur, anatomie du bois, identification, mesure (activité), propriété mécanique, Dalbergia

Mots-clés géographiques Agrovoc : Madagascar

Mots-clés libres : Discrimination, Near Infrared Spectroscopy, Portable spectrometer, PLSDA, Dalbergia

Classification Agris : K01 - Foresterie - Considérations générales
F70 - Taxonomie végétale et phytogéographie
U10 - Informatique, mathématiques et statistiques

Champ stratégique Cirad : CTS 7 (2019-) - Hors champs stratégiques

Auteurs et affiliations

• Clarel Raobelina Andry, Université d'Antananarivo (MDG)
• Chaix Gilles, CIRAD-BIOS-UMR AGAP (FRA) ORCID: 0000-0003-2015-0551
• Razafimahatratra Andriambelo Radonirina, Université d'Antananarivo (MDG)
• Rakotoniaina Sarobidy Pascal, Tozzi Green (MDG)
• Ramananantoandro Tahiana, Université d'Antananarivo (MDG)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/605301/)

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