Deforestation of the Amazon rainforest , and recover of degraded pastures. In August 2017, Brazilian president Michel Temer abolished an Amazonian nature reserve the size of Denmark in Brazil's northern states of Pará and Amapá. Deforestation of the Amazon rainforest The cattle sector of the Brazilian Amazon, incentivized by the international beef and leather trades, has been responsible for about 80% of all deforestation in the region, or about 14% of the world's total annual deforestation, making it the world's largest single driver of deforestation. By 2017, 20% of land forested before 1970 in the Amazon had been deforested, and 90% of that been converted
Amazon rainforest has declined significantly in the Brazilian Amazon between 2004 and 2014, there has been an increase to the present day. Environmentalists are concerned about loss of biodiversity that will result from destruction of the forest, and also about the release of the carbon contained within the vegetation, which could accelerate global warming. Amazonian evergreen forests account for about 10% of the world's terrestrial primary productivity and 10% of the carbon stores in ecosystems – of the order of 1.1 × 10 metric tonnes of carbon. Amazonian forests are estimated to have accumulated 0.62 ± 0.37 tons of carbon per hectare