Amazon Rainforest Under Threat: Deforestation and Climate Change on the Rise

Strategic Insights -

The Amazon rainforest, the largest and most biodiverse rainforest on Earth, is facing an unprecedented threat due to the alarming rate of deforestation and climate change. Observations from 35 years of research have demonstrated the critical impact of human activities on the rainforest ecosystem, particularly the quantifiable effects of local deforestation and global climate change on precipitation and temperature levels. A recent study, conducted by researchers from Brazil and the Max Planck Institute for Chemistry, provides conclusive evidence that deforestation is the primary driver of reduced rainfall in the Amazon, accounting for 75% of the decline in precipitation since 1985.

Key Takeaways:

  • Deforestation is responsible for a 21-millimeter decline in precipitation during the dry season since 1985, representing an almost 8% decrease.
  • Global climate change accounts for 84% of the 2°C temperature rise in the Amazon region.
  • The study analyzed data from 29 regions within the Brazilian Amazon, gathered over 35 years (1985-2020) using satellites and atmospheric measurements.
  • Deforestation accounts for 16% of the temperature increase, whereas 84% is attributed to global climate change.
  • The Amazon rainforest climate does not respond linearly to deforestation, with the most severe changes occurring early in the deforestation process, particularly when 10-40% of the forest is lost.
  • Continued deforestation puts the Amazon rainforest climate resilience at risk, as predicted by the study's findings.

Statistics:

  • 75% of the decline in precipitation since 1985 is attributed to deforestation.
  • Temperature increase in the Amazon region: 2°C, with 84% due to global climate change and 16% due to deforestation.
  • Total rainfall in the dry season: 281 millimeters, amounting to 26% of the average precipitation.
  • CO2 increase: attributed to global climate change (99%) and deforestation (0.3%).
  • Predicted temperature rise by 2035: 0.6°C and precipitation decrease: 7 millimeters during the dry season, assuming continued deforestation at the current rate.

Sources:

  • Max Planck Institute for Chemistry: * * * Deforestation is closely related to reduced rainfall in the Amazon rainforest * * (No date mentioned in the original text)
  • "Nature Communications" (published study cited): (No date mentioned in the original text)
  • Luiz Machado: Climate researcher at the University of Sao Paulo.
  • Christopher Pohlker: Max Planck Institute for Chemistry in Germany.
  • MapBiomas: A Brazilian organization focused on sustainable development.
  • Amazon Environmental Research Institute (IPAM): A Brazilian institution dedicated to environmental research.