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 × 1011 metric tonnes of carbon .
Amazonian evergreen forests account for about 10 % of the world 's productivity on land and 10 % of the carbon stores in ecosystems -- of the order of 1.1 × 1011 metric tonnes of carbon .