Burned and unburned sites (4 ha each) of black and white spruce in interior Alaska were studied in 1993 and 1994 within and adjacent to an area burned by wildfire in 1990. The main purpose of the research was to quantify fuel consumption and carbon release during the fire. Forest floor, tree, and shrub organic pools were measured on burned and unburned sites. Total fuel consumption averaged 12.1 kg/m2 and 7.9 kg/m2 for black and white spruce sites, respectively. Carbon flux averaged 4.3 kg/m2 for black spruce and 3.1 kg/m2 for white spruce, while CO2 emissions averaged 13.7 kg/m2 and 10.6 kg/m2. The forest floor was the principal source of combusted fuel accounting for 89.1% of total consumption in black spruce stands and 88.5% in white spruce stands. Fuel consumption, carbon flux, and trace gas emission estimates are three to five times higher than those reported in other boreal fire studies.