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Article

Comparison of Whole-Tree Wood Property Maps for 13- and 22-Year-Old Loblolly Pine

1
Department of Wood Science and Engineering, College of Forestry, Oregon State University, Corvallis, OR 97331, USA
2
Warnell School of Forestry and Natural Resources, University of Georgia, 180 E. Green Street, Athens, GA 30602, USA
3
Fibraconsult, Concepcion 4030000, Chile
*
Author to whom correspondence should be addressed.
Forests 2018, 9(6), 287; https://doi.org/10.3390/f9060287
Received: 20 April 2018 / Revised: 18 May 2018 / Accepted: 22 May 2018 / Published: 24 May 2018
(This article belongs to the Special Issue Wood Property Responses to Silvicultural Treatments)
Maps developed using Akima’s interpolation method were used to compare patterns of within-tree variation for Pinus taeda L. (loblolly pine) wood properties in plantation-grown trees aged 13 and 22 years. Air-dry density, microfibril angle (MFA) and modulus of elasticity (MOE) maps represented the average of 18 sampled trees in each age class. Near infrared (NIR) spectroscopy models calibrated using SilviScan provided data for the analysis. Zones of high density, low MFA and high MOE wood increased markedly in size in maps of the older trees. The proportion of wood meeting the visually graded No. 1 (11 GPa) and No. 2 (9.7 GPa) MOE design values for southern pine lumber increased from 44 to 74% and from 58 to 83% respectively demonstrating the impact of age on end-product quality. Air-dry density increased from pith to bark at all heights but lacked a significant trend vertically, while radial and longitudinal trends were observed for MFA and MOE. Changes were consistent with the asymptotic progression of properties associated with full maturity in older trees. View Full-Text
Keywords: density; loblolly pine; microfibril angle; modulus of elasticity; near-infrared spectroscopy; Pinus taeda; within-tree variation; wood property maps density; loblolly pine; microfibril angle; modulus of elasticity; near-infrared spectroscopy; Pinus taeda; within-tree variation; wood property maps
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MDPI and ACS Style

Schimleck, L.; Antony, F.; Mora, C.; Dahlen, J. Comparison of Whole-Tree Wood Property Maps for 13- and 22-Year-Old Loblolly Pine. Forests 2018, 9, 287. https://doi.org/10.3390/f9060287

AMA Style

Schimleck L, Antony F, Mora C, Dahlen J. Comparison of Whole-Tree Wood Property Maps for 13- and 22-Year-Old Loblolly Pine. Forests. 2018; 9(6):287. https://doi.org/10.3390/f9060287

Chicago/Turabian Style

Schimleck, Laurence, Finto Antony, Christian Mora, and Joseph Dahlen. 2018. "Comparison of Whole-Tree Wood Property Maps for 13- and 22-Year-Old Loblolly Pine" Forests 9, no. 6: 287. https://doi.org/10.3390/f9060287

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