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Increases in burnt area due to changing fuel and/or moisture, 2001-2014
Areas where increases in burnt area between 2001 and 2014 were driven by changes in either fuel loads, moisture content, and/or fuel and moisture,…
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Potential reinforcing feedback loop of climate change on wildfires
Potential reinforcing feedback loop of climate change on wildfires. Climate change will directly affect the frequency and magnitude of extreme weather conducive to the…
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Map of Tonl Sap, Cambodia showing the extent of fires in 2019 on lands previously inundated on a seasonal basis.
Tonle Sap in Cambodia is the largest lake in Southeast Asia. Every year during the wet season, it floods and is then partially drained…
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Direct impacts of human ignitions, active suppression, and land fragmentation from agriculture on burnt areas, 2001–2014
The direct impacts that the combined effects of human ignitions, active suppression, and land fragmentation from agriculture had on burnt areas between 2001–2014 (from…
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Dominant factors contributing to burnt area
The dominant factors contributing to burnt area during the height of the fire season. The strength of each control is measured as the sensitivity…
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Prevalence of recent global wildfire activity, 2014-2019
An indication of the prevalence of recent global wildfire activity, calculated as the normalised difference between the annual average burnt area from January 2014…
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Ecological disturbance of peatlands by wildfire
An example of the ecological disturbance that can result from wildfires on peatlands. Peatlands contribute significantly to carbon sequestration and storage, biodiversity conservation, water…
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Fire severity and intensity
The severity of a fire depends upon the intensity of the fire and the nature of the vegetation through which it is burning. High-intensity…
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Factors and conditions influencing wildfire occurrence
A wildfire is the result of a complex interaction of biological, meteorological, physical, and social factors that influence its likelihood, behaviour, duration, extent, and…
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Fire behaviour triangle
The fire behaviour triangle illustrates the key variables that affect how a wildfire behaves (Countryman 1966). Anything that burns is fuel, mainly live and…
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Annual average fire density
Almost every vegetation region of the world has a free-burning fire at some time of the year. This figure shows the annual concentration of…
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Factors influencing wildfire outcomes and management actions
A wildfire is the result of a complex interaction of biological, meteorological, physical, and social factors that influence its likelihood, behaviour, duration, extent, and…