Sun Creek – 09 Fuels

Final Report, Forest Restoration of Sun Creek, Crater Lake National Park

 Research Summary

Fuels

Fuel effects of the fires were also analyzed. Although 50 to 70 percent of total dead and down fuels were consumed by the fires, there were no statistically significant differences between forest types and logging histories for the large fuel classes. For the smaller fuels (litter/duff and I-hr timelag fuels) significant differences between plots did occur. More litter/duff was consumed than 1-hr timelag (small twig) fuels, and more litter/duff was consumed in the sugar pine area than in the ponderosa pine area. This was primarily due to higher loads before the prescribed fire, since post-fire levels were relatively equal.

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Figure 4. Number of stems by diameter classes of trees by species before and after burning. Note the scale change in order to accommodate the smaller. diameter classes of white fir. Amounts removed by the fire are shown by white; residual densities are indicated by vertical stripes.

 

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Figure 5. Number of stems by height classes of tree species before and after burning. Note the scale change in order to accommodate the smaller diameter classes of white fir. Amounts removed by the fire are shown in white; residual densities are indicated by vertical stripes.

 

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