bushfireconf2015 - 15. aires - weeds and flammability
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Fuel load, structure and flammability of weeds as key factors in Australian classification
frameworks
Felipe S. Aires
Fire RegimeFrequencyIntensity
ExtentType
Seasonality
Topography
Fuel
Climate
Native PlantsInvasive species
Fuel load and Vertical Structure
Frac
tion
heig
ht (c
m)
Olive
Intermediate
Woodland
Leaf flammability
Ignitability- Time to ignition (s)
Sustainability- Flame duration (s)
Combustibility- burning rate (g s-1)
Consumability- proportion of mass or volume consumed by fire (%)
Natives ~ 30 s
Invasive ~ 19 s
Natives ~ 102 s
Invasive ~ 108 s
Natives ~ 0.20 g s-1
Invasive ~ 0.16 g s-1
Natives ~ 13%
Invasive ~ 8%
Fire behaviour prediction
• Fuel data – Systematically added to a common database
• Flammability data– Standardised methodology
• Provide enough information to create fire behaviour predictions
• Improve decision and policy making when dealing with management of novel fuel types such as weed invasion
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