O Efeito Dominó da Amazônia

Researchers from CPI/PUC-Rio have developed a vegetation-climate model demonstrating that Amazon deforestation causes degradation in distant areas due to water scarcity. The study finds that for every 100 trees deforested, an average of 22 additional trees die in other regions. This process threatens to push the forest toward a 'point of no return,' where a deforestation threshold of 40% could lead to a total climate collapse and a 60% loss of vegetation density.

• Deforestation in the Amazon creates a 'domino effect' where the loss of trees reduces transpiration and atmospheric moisture, leading to decreased rainfall and subsequent degradation in distant forest regions.
• A vegetation-climate model developed by CPI/PUC-Rio indicates that, on average, the death of 100 deforested trees results in the loss of 22 additional trees in distant areas due to lack of water.
• The Amazon is approaching a critical 'point of no return' where the loss of 400 billion trees would release carbon emissions equivalent to five years of global emissions, making the 1.5°C global warming limit impossible to achieve.
• Current forest status shows that nearly 20% of the original Amazon has been deforested, and at least another 20% has been impacted by degradation, which contributed to nearly 70% of global carbon emissions from tropical forests between 2003 and 2014.
• Simulations for the next 30 years suggest two primary scenarios: if deforestation remains at 20%, an additional 13% of the forest will be degraded; if deforestation reaches a 40% threshold, the forest could suffer a climate collapse and lose approximately 60% of its vegetation density.

APA

Araujo, R., & Mourão, J. (2023). O Efeito Dominó da Amazônia. Climate Policy Initiative. https://www.climatepolicyinitiative.org/wp-content/uploads/2023/07/DESTAQUE-Efeito-Domino.pdf

Chicago

Araujo, Rafael, and João Mourão. O Efeito Dominó da Amazônia. Climate Policy Initiative, 2023. https://www.climatepolicyinitiative.org/wp-content/uploads/2023/07/DESTAQUE-Efeito-Domino.pdf.

Wikipedia

{{cite report |last1=Araujo |first1=Rafael |last2=Mourão |first2=João |title=O Efeito Dominó da Amazônia |publisher=Climate Policy Initiative |date=July 2023 |url=https://www.climatepolicyinitiative.org/wp-content/uploads/2023/07/DESTAQUE-Efeito-Domino.pdf |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{araujo2023efeito, author = {Araujo, Rafael and Mourão, João}, title = {{O Efeito Dominó da Amazônia}}, institution = {Climate Policy Initiative}, year = {2023}, month = jul, url = {https://www.climatepolicyinitiative.org/wp-content/uploads/2023/07/DESTAQUE-Efeito-Domino.pdf}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }