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Author(s):
Charles W. Philpot, Robert W. Mutch
Year Published:

Cataloging Information

Topic(s):
Fire Behavior
Data Evaluation or Data Analysis for Fire Modeling
Ecosystem(s):
Montane dry mixed-conifer forest, Ponderosa pine woodland/savanna

NRFSN number: 11943
FRAMES RCS number: 14070
Record updated:

The moisture, ether extractive, and energy content of ponderosa pine (Pinus ponderosa Laws.) and Douglas-fir (Pseudotsuga menziesii L.) foliage were measured during two fire seasons. The moisture content of l- and 2-year-old needles was found to rise throughout the summer. The ether extractive content was highest in the fir foliage at the end of summer when fire severity is generally thought to be highest. Pine foliage extractive content was high throughout the sample period. The energy content of the extracted leaves and the extractives varied through the summer. There may be a relationship between the extractives and crown fire potential in these species.

Citation

Philpot, Charles W.; Mutch, Robert W. 1971. The seasonal trends in moisture content, ether extractives, and energy of ponderosa pine and Douglas-fir needles. Res. Pap. INT-RP-102. Ogden, UT: USDA Forest Service, Intermountain Forest and Range Experiment Station. 21 p.

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