Number of large fires (>200 hectares) across Canada
The fire regime describes the patterns of fire seasonality, frequency, size, spatial continuity, intensity, type (e.g., crown or surface fire) and severity in a particular area or ecosystem.
The number of large fires refers to the annual number of fires greater than 200 hectares (ha) that occur per units of 100,000 ha. It was calculated per Homogeneous Fire Regime (HFR) zones. These HFR zones represent areas where the fire regime is similar over a broad spatial scale (Boulanger et al. 2014). Such zonation is useful in identifying areas with unusual fire regimes that would have been overlooked if fires had been aggregated according to administrative and/or ecological classifications.
Fire data comes from the Canadian National Fire Database covering 1959–1999 (for HFR zones building) and 1959-1995 (for model building). Multivariate Adaptive Regression Splines (MARS) modeling was used to relate monthly fire regime attributes with monthly climatic/fire-weather in each HFR zone. Future climatic data were simulated using the Canadian Earth System Model version 2 (CanESM2) and downscaled at a 10 Km resolution using ANUSPLIN for two different Representative Concentration Pathways (RCP). RCPs are different greenhouse gas concentration trajectories adopted by the Intergovernmental Panel on Climate Change (IPCC) for its fifth Assessment Report. RCP 2.6 (referred to as rapid emissions reductions) assumes that greenhouse gas concentrations peak between 2010-2020, with emissions declining thereafter. In the RCP 8.5 scenario (referred to as continued emissions increases) greenhouse gas concentrations continue to rise throughout the 21st century.
Multiple layers are provided. First, the number of large fires (>200 ha) is shown across Canada for a reference period (1981-2010). Projected number of large fires layers are available for the short- (2011-2040), medium- (2041-2070), and long-term (2071-2100) under the RCP 8.5 (continued emissions increases) and, for the long-term (2071-2100), under RCP 2.6 (rapid emissions reductions).
Reference: Boulanger, Y., Gauthier, S., et al. 2014. A refinement of models projecting future Canadian fire regimes using homogeneous fire regime zones. Canadian Journal of Forest Research 44, 365–376.
- Publisher - Current Organization Name: Natural Resources Canada
- Licence: Open Government Licence - Canada
Data and Resources
Forest Change Data Catalogue (English)PDFEnglish dataset PDF
Forest Change Data Catalogue (French)PDFFrench dataset PDF
Number of large fires (English ESRI File Geodatabase)FGDB/GDBEnglish dataset FGDB/GDB
Number of large fires (French ESRI File Geodatabase)FGDB/GDBFrench dataset FGDB/GDB
Number of large fires (English ESRI ArcMap project file)MXDEnglish guide MXD
Number of large fires (French ESRI ArcMap project file)MXDFrench guide MXD
|Number of large fires (>200 hectares) across Canada|
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