The influence of fire weather and land use on the fire activity of the Lake Abitibi area, eastern Canada
Document Type: Journal Article
Author(s): Patrick Lefort; Sylvie Gauthier; Yves Bergeron
Publication Year: 2003

Cataloging Information

  • Abies balsamea
  • agriculture
  • Betula papyrifera
  • boreal forests
  • Canada
  • coniferous forests
  • deciduous forests
  • fire danger rating
  • fire frequency
  • fire intensity
  • fire management
  • fire scar analysis
  • fire size
  • fire size
  • fire suppression
  • forest management
  • fragmentation
  • FWI - CFFDRS Fire Weather Index System
  • histories
  • land use
  • logging
  • Ontario
  • Picea glauca
  • Picea mariana
  • Pinus banksiana
  • population density
  • Populus tremuloides
  • Quebec
  • settlement
  • size classes
  • slash
  • slash and burn
  • snags
  • statistical analysis
  • suppression
  • Thuja occidentalis
  • trees
  • wildfires
Record Maintained By:
Record Last Modified: May 29, 2020
FRAMES Record Number: 46046
Tall Timbers Record Number: 21702
TTRS Location Status: In-file
TTRS Call Number: Fire File
TTRS Abstract Status: Fair use, Okay, Reproduced by permission

This bibliographic record was either created or modified by the Tall Timbers Research Station and Land Conservancy and is provided without charge to promote research and education in Fire Ecology. The E.V. Komarek Fire Ecology Database is the intellectual property of the Tall Timbers Research Station and Land Conservancy.


The fire history of two adjacent regions of the boreal forest, one characterized by logging (Ontario -- 510,000 ha) and the other by small scale agricultural activities (Quebec -- 140,000 ha), was studied before and after these regions were opened up to settlement in 1916. From a review of provincial forest fire records and the assessment of the age of fire-initiated forest stands, it appears that large but rare fires occurred during the presettlement period on both sides of the border. After 1916, due to slash and burn activities, the agricultural region (Que) had proportionally about twice the burned areas and ten times more fires than the forestry region (Ont). Despite differences in population density, road network, and land use, fire size class occurrence did not differ between landscapes overtime. However, the occurrence of fires larger than 100 ha, considering three development phases (1916-1939; 1940-1969; 1970-1998), decreased in both regions from settlement to the present, particularly during the late phase (1970-1998) in the agricultural region. An analysis of fluctuations in the Canadian forest Fire Weather Index system (FWI), a rating of fire danger severity, showed major climatic stresses at the beginning of the century (1916-1924), followed by a decrease in the occurrence of extreme FWI values. Combined with the impact of climate, which affected the annual area burned and the number of large fires in both landscapes, the results suggest that the landscape fragmentation, the increase in the percentage of deciduous trees overtime and/or effective fire detection by residents led to a decrease in the number of fires larger than 100 ha on the agricultural side for the late phase (1970-1998). © 2003 by the Society of American Foresters. Abstract reproduced by permission.

Online Link(s):
Lefort, P., S. Gauthier, and Y. Bergeron. 2003. The influence of fire weather and land use on the fire activity of the Lake Abitibi area, eastern Canada. Forest Science, v. 49, no. 4, p. 509-521.