For the Amazon, deforestation  in combination with climate change will raise the prospect of passing a tipping point leading to large-scale savannisation of the rainforest biome, but uncertainty remains whether this will take place in the 21st century . However, considering that the Amazon has already lost ca. 20% of its forests , crossing the tipping point may not only create savannas of the deforested parts but may also result in precipitation reductions of 40% in non-deforested parts of the western Amazon due to a breakdown of the South American monsoonal circulation and the subsequent western cascade of precipitation and evapotranspiration
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report