Could the Amazon turn into a net carbon emitter?
Looks like last year it probably did.
"Applying the same principles to the 2010 drought, they estimated that 8.5 billion tonnes of CO2 will be released - more than the entire 7.7bn tonnes emitted in 2009 by China, the biggest polluting nation in the world. This estimate does not include forest fires, which release carbon and increase in dry years."