Natural systems in NES are also vulnerable . The Caatinga vegetation is particularly sensitive to variations in water availability and climate change . It has already lost about 50% of its original vegetation cover , with only about 2% of the remaining vegetation within fully protected areas . Caatinga's high vulnerability to climate change is further increased by the extensive conversion of native vegetation  .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report