AI Article Synopsis
- Tropical carbon emissions mainly come from direct forest clearing, but emissions from drought-related forest fires are often overlooked in national carbon inventories.
- A study of the Brazilian Amazon from 2003-2015 shows that despite a significant drop in deforestation rates, fire incidents surged by 36% during the severe drought in 2015.
- The 2015 drought led to a record-high number of active fires, contributing over 989 Tg CO emissions from forest fires, which is more than half the emissions from deforestation, indicating the need for better accounting of fire emissions in carbon inventories.
Article Abstract
Tropical carbon emissions are largely derived from direct forest clearing processes. Yet, emissions from drought-induced forest fires are, usually, not included in national-level carbon emission inventories. Here we examine Brazilian Amazon drought impacts on fire incidence and associated forest fire carbon emissions over the period 2003-2015. We show that despite a 76% decline in deforestation rates over the past 13 years, fire incidence increased by 36% during the 2015 drought compared to the preceding 12 years. The 2015 drought had the largest ever ratio of active fire counts to deforestation, with active fires occurring over an area of 799,293 km. Gross emissions from forest fires (989 ± 504 Tg CO year) alone are more than half as great as those from old-growth forest deforestation during drought years. We conclude that carbon emission inventories intended for accounting and developing policies need to take account of substantial forest fire emissions not associated to the deforestation process.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5811599 | PMC |
| http://dx.doi.org/10.1038/s41467-017-02771-y | DOI Listing |
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