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Title: Revivification of a method for identifying longleaf pine timber and its application to southern pine relicts in southeastern Virginia

Source: Canadian Journal of Forest Research 41:2440-2447

Author(s)Eberhardt, Thomas L.; Sheridan, Philip M.; Bhuta, Arvind A.R.

Publication Year: 2011  View PDF »

Category: Journal Articles

Abstract: Abstract: Longleaf pine (Pinus palustris Mill.) cannot be distinguished from the other southern pines based on wood anatomy alone. A method that involves measuring pith and second annual ring diameters, reported by Arthur Koehler in 1932 (The Southern Lumberman, 145: 36–37), was revisited as an option for identifying longleaf pine timbers and stumps. Cross-section disks of longleaf, loblolly (Pinus taeda L.), and shortleaf (Pinus echinata Mill.) pines were measured and the diameters of their piths and second annual rings plotted against each other. From this plot, longleaf pine could be differentiated from the other two southern pine species, demonstrating that a method established with trees harvested more than 70 years ago is still applicable to standing timber of today. No evidence was found to suggest that different growth rates impact method applicability. In those situations where the second annual ring is intact, but not the pith, very large second annual ring diameters (>40 mm) may identify timbers with a lower probability of being longleaf pine. In addition to the identification of very old lightwood stumps as part of a longleaf pine restoration effort, both methods may be applied to timber identification in historic structures and the niche forest products industry involving the recovery and processing of highly prized longleaf pine logs from river bottoms. Measurements from relicts sampled in this study were consistent with the purported range for longleaf pine in Virginia. Résumé : On ne peut pas distinguer le pin des marais (Pinus palustris Mill.) des autres pins du Sud seulement sur la base des caractéristiques anatomiques du bois. Une méthode qui consiste à mesurer les diamètres de la moelle et du deuxième cerne annuel, rapportée par Arthur Koehler en 1932 (The Southern Lumberman, 145: 36–37), a été réexaminée à titre d’alternative pour identifier le bois et les souches de pin des marais. Des sections radiales de pin des marais, de pin à encens (Pinus taeda L.) et de pin à courtes feuilles (Pinus echinata Mill.) on été mesurées et les diamètres de la moelle et du deuxième cerne annuel ont été comparés à l’aide d’un graphique. Le pin des marais pouvait être distingué des deux autres espèces de pin du Sud sur ce graphique démontrant qu’une méthode mise au point à partir d’arbres récoltés il y a plus de 70 ans est encore applicable au bois sur pied aujourd’hui. Nous n’avons trouvé aucun indice permettant de croire qu’une différence de taux de croissance a un impact sur l’applicabilité de la méthode. Dans le cas où le deuxième cerne annuel est intact, mais pas la moelle, un deuxième cerne annuel de très grand diamètre (>40 mm) peut indiquer qu’il s’agit de bois qui a une plus faible probabilité d’être du pin des marais. En plus de l’identification de très vieilles souches de bois gras associée à l’effort de restauration du pin des marais, les deux méthodes peuvent être appliquées pour l’identification du bois dans les structures historiques et la niche de l’industrie des produits du bois qui implique la récupération et le traitement des billes très prisées de pin des marais provenant du fond des rivières. Les mesures des reliques échantillonnées dans cette étude correspondent à l’intervalle présumé pour le pin des marais en Vir

Publication Review Process: Formally Refereed

File size: 797 kb(s)

Date posted: 09/17/2012

This publication is also viewable on Treesearch:  view
RITS Product ID: 61368

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