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Notes: Effect of Leaf Thickness on Ignitibility

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Standardized fuel samples cut from the leaves of 32 plant species and from sheets of filter paper were test-burned in a muffle furnace at 750°C. Spontaneous ignition delay times, a measure of fuel ignitibility, were recorded. Ignition times varied directly with sample thickness and inversely with the logarithm of the surface area-to-volume ratio. Because of its relationship to ignitibility, leaf thickness may be a factor contributing to fire retardance in some plants. Forest. Sci. 17:475-478.

Keywords: Fire hazard; forest fuels

Document Type: News

Affiliations: Member of the Plant Research Div., Los Angeles State and County Arboretum, Arcadia, Calif. 91006

Publication date: December 1, 1971

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