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Auteur Charline Freyburger
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INRA, UMR1092 LERFoB, 54280 Champenoux, France AgroParisTech, UMR1092 LERFoB, 54000 Nancy, France
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Measuring wood density by means of X-ray computer tomography / Charline Freyburger in Annals of Forest Science, Vol 66 n° 8 (December 2009)
[article]
Titre : Measuring wood density by means of X-ray computer tomography Titre original : Mesure de la densité du bois par tomographie à rayons X Type de document : Article/Communication Auteurs : Charline Freyburger, Auteur ; Fleur Longuetaud, Auteur ; Frédéric Mothe, Auteur ; Thiéry Constant, Auteur ; Jean-Michel Leban , Auteur Année de publication : 2009 Article en page(s) : n° 804 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Végétation
[Termes IGN] biomasse
[Termes IGN] densité du bois
[Termes IGN] étalonnage d'instrument
[Termes IGN] puits de carbone
[Termes IGN] rayon X
[Termes IGN] tomographieRésumé : (Auteur) Wood density is a characteristic of major interest. Usually, it is used as an indicator of wood quality; however, in the context of global change, it is increasingly used for biomass and carbon storage estimations. X-ray computer tomography is a method which enables quick estimates of wood density after applying a calibration procedure.
A review of the literature is presented in this article. Most of the previous studies have been performed in the 80’s or at the beginning of the 90’s. In this study, the relationship between wood density and Hounsfield numbers was investigated using a recent medical scanner. A linear relationship was fitted using a calibration data set which consisted in tropical wood samples representing a large range of densities ranging between 133 and 1319 kg m−3, and then validated using an independent data set (mainly temperate tree species). The fitted relationships were very strong (R2 > 0.999), whichever the tested scanner settings, with slight but significant effects of the current voltage and reconstruction filters. The RMSE values computed from the validation data set ranged between 5.4 and 7.7 kg m−3 for densities ranging between 364 and 821 kg m−3. In conclusion, this method of calibration enables the use of a medical scanner to obtain maps of wood density, in a fast and non destructive way, and with a very good accuracy. Very interesting perspectives are opened regarding biomass distribution within trees.Numéro de notice : A2009-610 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1051/forest/2009071 Date de publication en ligne : 25/11/2009 En ligne : https://www.afs-journal.org/articles/forest/full_html/2009/08/f09029/f09029.html Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=72893
in Annals of Forest Science > Vol 66 n° 8 (December 2009) . - n° 804[article]Exemplaires(1)
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