Drought-driven wildfires on rise in Amazon basin

Intensifying droughts in the Amazon basin are now a primary determinant of increases in forest fires, a reality that will hinder Brazil’s efforts to curb greenhouse gas emissions solely by limiting deforestation, according to a new study. Highlights:

  • Despite a 76 percent decline in deforestation rates between 2003 and 2015, the incidence of forest fires is increasing in Brazil, with new research linking the rise in fires not only to deforestation, but also to severe droughts.
  • El Niño, combined with other oceanic and atmospheric cycles, produced an unusually severe drought in 2015, a year that saw a 36 percent increase in Amazon basin forest fires, which also raised carbon emissions.
  • Severe droughts are expected to become more common in the Brazilian Amazon as natural oceanic cycles are made more extreme by human-induced climate change.
  • In this new climate paradigm, limiting deforestation alone will not be sufficient to reduce fires and curb carbon emissions, scientists say. The maintenance of healthy, intact, unfragmented forests is vital to providing resilience against further increases in Amazon fires.

[Nature Communications]

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