Fire regimes of the United States

Under construction. More vegetation communities will be added as Fire Regime Syntheses are completed.

Syntheses of fire regime information on biophysical vegetation communities throughout the United States. Select the Fire Regime Synthesis name for information on historical fire regimes based on a systematic literature search. Numbers in the table are derived from LANDFIRE succession modeling of Biophysical Settings (BpSs), which is based on literature, local data, and/or expert estimates. Select links in "FEIS Species Reviews" to view relevant FEIS Species Reviews; select links in "Fire interval" to see data for all BpSs covered in the synthesis.

FEIS syntheses
Results from LANDFIRE models
Fire regime syntheses FEIS Species Reviews Fire interval¹ (years)
Fire severity² (% of fires)
Number of BpS groups in each
fire regime group
Across US Sparsely vegetated
NA       0 0 0 0 0 46
Alaska Alaskan black spruce
73-188 46-87 13-54 0 0 0 2 3 0 1
Alaska Alaskan coastal
NA       0 0 0 0 0 13
Alaska Alaskan tundra
175-1,023 98-100 0-2 0 0 0 0 2 7 14
Hawai'i Hawai'i
12-4,975 0-50 50-100 0-100 3 0 4 0 7 8
¹Average historical fire-return interval derived from LANDFIRE succession modeling (labeled "MFRI" in LANDFIRE).
²Percentage of fires in 3 fire severity classes, derived from LANDFIRE succession modeling. Replacement-severity fires cause >75% kill or top-kill of the upper canopy layer; mixed-severity fires cause 26%-75%; low-severity fires cause <26%.
³NA (not applicable) refers to BpS models that did not include fire in simulations.