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A bottom–up savanna fire fuel consumption inventory and its application to savanna burning in Kafue National Park, Zambia

Background Tropical savannas are the most extensively and frequently burned biome worldwide. To establish accurate emissions inventories for burning in tropical savannas, detailed biomass information is required. Available pan-tropical or global biomass maps currently focus on standing vegetation and largely ignore surface layers, a key component of fuel consumption in the tropics. Aims In this paper, we propose a methodology for building a high-resolution regional bottom–up fuel inventory, and examine the effectiveness thereof in a local scale case study in Kafue National Park, Zambia. Methods We scaled up fuel measurements using drone-mounted cameras and Sentinel-2 imagery. We examined inter-annual fire variability’s effects on emissions. Key results The fuel model performs well for surface level fuel, with an error margin of ~±27%. Accuracy is reduced when mapping more stochastic fuel layers such as coarse woody debris, or fuel layers with a structural component. Conclusions Current pyrogenic emissions models underestimate emissions from Kafue National Park. Implications Timing of burning is an important factor for total burned area as well as for emissions.
- Wageningen University & Research Netherlands
- Vrije Universiteit Amsterdam Netherlands
- Free University of Amsterdam Pure VU Amsterdam Netherlands
fuel load, remote sensing, biomass, fire management, emissions, fire, prescribed fire, savanna, burning
fuel load, remote sensing, biomass, fire management, emissions, fire, prescribed fire, savanna, burning
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