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A Wild Burn

Forest Fires Unleash Carbon Emissions

Grazing Savanna Fires Blamed for Largest Contributions

A recent report by the Chinese Academy of Sciences has revealed that global forest fires have emitted a staggering 339 billion tonnes of carbon dioxide between 2001 and 2022. Notably, savannah grassland burning has been identified as the biggest contributor to these emissions, accounting for the largest proportion of the annual total.

The report highlights a concerning trend towards more frequent and intense forest burning, with fire emission intensities rising significantly in recent years. This increased burning intensity is believed to be a major factor behind the distinct fire emission trends observed across the globe.

Furthermore, many grasslands have adapted to fire and are highly drought-tolerant. However, ongoing changes in disturbance regimes, such as fire frequency, suggest that grasslands may be facing challenges in maintaining their resilience.

To better understand the impact of grassland fires, scientists have been investigating the greenhouse gas budget of grasslands. This research involves estimating the fluxes of CO2, CH4, and N2O emitted by grasslands over the past five decades using models like ORCHIDEE-GM.

The findings of this study underscore the urgent need to address the issue of forest fires and their significant impact on carbon emissions. By implementing effective fire management strategies and promoting sustainable land-use practices, we can mitigate the contribution of forest burning to global climate change.

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