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Effect of Fire Charring on Condition of Ponderosa Pine Trees in Oregon as Measured by Longitudinal Compression Strength
- Kangas, Michael, Filip, Gregory M., Morrell, Jeffrey J.
- Western journal of applied forestry 2009 v.24 no.1 pp. 33
- Pinus ponderosa, forest trees, tree damage, fires, wood quality, wood strength, wood properties, bark, decayed wood, sapwood, dead wood, mechanical stress, durability, testing, new methods, Oregon
- The ability to assess wood quality using longitudinal compression strength (LCS) of plugs removed from along the length of a tree stem was assessed in ponderosa pine damaged to varying degrees 4 years earlier in a prescribed burn. LCS has been used elsewhere to estimate residual strength of utility poles and might be a simple method for assessing wood quality in standing trees. The degree of stem char on fire-killed trees had a significant effect on LCS values. LCS values of plugs from charred portions of fire-killed ponderosa pines were greater than those from uncharred portions of fire-killed ponderosa pine trees. LCS might be a useful tool for forest managers assessing the remaining flexural properties of standing dead timber after fires.