LANDFIRE 2001 Refresh Fire Regime Groups (FRG) HI

The LANDFIRE (LF) 2001 Fire Regime Groups (FRG) product characterizes the presumed historical fire regimes within landscapes based on interactions between vegetation dynamics, fire spread, fire effects, and spatial context. FRG definitions have been altered to best approximate the definitions outlined in the Interagency Fire Regime Condition Class (FRCC) Guidebook (Hann et al. 2004). To learn more about FRG go to https://landfire.gov/fire-regime/frg. The FRG product categorizes simulated mean fire return intervals and fire severities into five fire regimes defined in the FRCC Guidebook. The classes are defined as follows: Fire Regime I: 0 to 35 year frequency, low to mixed severity, Fire Regime II: 0 to 35 year frequency, replacement severity, Fire Regime III: 35 to 200 year frequency, low to mixed severity, Fire Regime IV: 35 to 200 year frequency, replacement severity, and Fire Regime V: 200+ year frequency, any severity. Additional values were included to represent Water (111), Snow / Ice (112), Barren (131), and Sparsely Vegetated (132). Vegetated areas that never burned during the simulations were included in the category "Indeterminate Fire Regime Characteristics" (133); these vegetation types either had no defined fire behavior or had extremely low probabilities of fire ignition.

[
  "010:12"
]

[
  "geospatial"
]