Fire regime groups

A classification of fire regimes into a discrete number of categories based on frequency and severity. The national, coarse-scale classification of fire regime groups commonly used includes five groups:

I - frequent (0-35 years), low severity

II - frequent (0-35 years), stand replacement severity

III - 35-100+ years, mixed severity

IV - 35-100+ years, stand replacement severity

V - 200+ years, stand replacement severity.

Source: National Wildfire Coordinating Group. 2012. Glossary of Wildland Fire Terminology. PMS 205. Accessed on 9 September 2013. Available at