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Table 1 Wildfire behavior according to each wildfire severity class.

From: Post-Fire Recovery of Eucalypt-Dominated Vegetation Communities in the Sydney Basin, Australia

Class

Wildfire severity class

Wildfire behavior

1

Unburned

No obvious burned vegetation in any strata

2

Low

Ground layer burned, shrub layer scorched, canopy not burned

3

Moderate

All ground and most shrubby vegetation burned, canopy not burned

4

High

All ground and shrub layer vegetation incinerated, canopy scorched

5

Very high

All vegetation incinerated, except stems <10mm, which survive

6

Extreme

All vegetation and stems <10 mm totally incinerated