Wood quality for longleaf pines: a spacing, thinning and pruning study on the Kisatchie National Forest

This article is part of a larger document. View the larger document here.


Twenty 70-year-old longleaf pine (Pinus palustris Mill.) trees were harvested from a spacing, thinning, and pruning study on the Kisatchie National Forest, LA. Tree property mapping was used to show the property variation within and between three of the trees. The construction of such maps is both time consuming and cost prohibitive using traditional test methods. However, we were able to construct tree property maps using NIRVANA (Near InfraRed Visual and Automated Numerical Analysis), a spectroscopic system developed for automated property determination for increment cores. This allows wood quality to be determined throughout the tree, and presented in the form of a readily interpretable map. Thus, the effects of spacing, thinning and pruning at different ages were observed within, as well as, between trees. The effect of high levels of extractives in the heartwood on the property determinations remains to be completely resolved.

  • Citation: So, Chi-Leung; Eberhardt, Thomas L.; Leduc, Daniel J.; Groom, Leslie H.; Goelz, Jeffrey C.G. 2010. Wood quality for longleaf pines: a spacing, thinning and pruning study on the Kisatchie National Forest. In: Stanturf, John A., ed. 2010. Proceedings of the 14th biennial southern silvicultural research conference. Gen. Tech. Rep. SRS–121. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. p. 585.
  • Posted Date: August 18, 2010
  • Modified Date: October 20, 2010
  • Print Publications Are No Longer Available

    In an ongoing effort to be fiscally responsible, the Southern Research Station (SRS) will no longer produce and distribute hard copies of our publications. Many SRS publications are available at cost via the Government Printing Office (GPO). Electronic versions of publications may be downloaded, printed, and distributed.

    Publication Notes

    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
    • Our online publications are scanned and captured using Adobe Acrobat. During the capture process some typographical errors may occur. Please contact the SRS webmaster if you notice any errors which make this publication unusable.
    • To view this article, download the latest version of Adobe Acrobat Reader.