Notes: Within-Stand Comparisons of Inner Bark Electrical Resistance in Lodgepole Pine--The Bark Moisture Factor

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Significant seasonal changes in the electrical resistance (ER) of inner bark of tagged lodgepole pine (Pinus contorta Dougl.) trees accompanied corresponding changes in bark moisture content. However, moisture contents on a given day of measurement were not correlated with ER. Significant correlations (0.05 level) were found for ER-phloem thickness, and ER-diameter. Moisture content was not one of the factors requiring measurement and standardization, when using electrical resistance to detect relative differences in vigor among trees of the same stand--when comparisons are made only with measurements of ER taken on the same day. Forest Sci. 26:309-312.

Keywords: Pinus contorta; electrical measurements; phloem

Document Type: Miscellaneous

Affiliations: Research Forester, USDA Forest Service, Intermountain Forest and Range Experiment Station, Ogden, UT 84401

Publication date: June 1, 1980

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