Skip to main content

Table 5 Potential fire behavior and predicted canopy fuels for current (2013) conditions in northern New Mexico under western spruce budworm outbreak (outbreak) and non-outbreak (pre-outbreak) conditions, as modeled in the Fire and Fuels Effects-Forest Vegetation Simulator. Standard deviation shown in parentheses.

From: The Influence of Western Spruce Budworm on Fire in Spruce-Fir Forests

Potential fire behavior
  Pre-outbreak1 (n = 6) Outbreak2 (n = 4)
Mortality (% of basal area)
   Moderate 41.17 (5.7) 36 (9.52)
   Severe 100.00 (0) 48 (29.9)
Flame length (m)
   Moderate 0.36 (0.01) 0.43 (0.01)
   Severe 24.26 (1.14) 5.51 (8.3)
Indices (km hr −1)
   Crowning 15.44 (2.68) 29.33 (4.84)
   Torching 65.05 (16.56) 48.95 (27.6)
Predicted canopy fuels
   Canopy bulk density (kg m −3) 0.25 (0.05) 0.11 (0.02)
   Canopy base height (m) 1.23 (0.25) 1.23 (0.58)
  1. 1 FVS output from stand exam data under non-outbreak conditions.
  2. 2 FVS output from stands under western spruce budworm outbreak conditions.