As the Copenhagen summit approaches, which countries and continents have been the largest emitters of CO2, and which will be in the future?

See also:

In depth: Copenhagen summit
Copenhagen calling
Greenland is warming up

Land use and CO2 - explanation

Fluxes of carbon related to land use change includes:

• Clearing of natural ecosystems for permanent croplands (cultivation)
• Clearing of natural ecosystems for permanent pastures (no cultivation)
• Abandonment of croplands and pastures with subsequent recovery of carbon stocks to those of the original ecosystem
• Shifting cultivation (swidden agriculture – repeated clearing, abandonment, and re-clearing of forests in many tropical regions)
• Wood harvest (industrial wood as well as fuel wood). These estimates include the emissions of carbon from wood products (burned, stored in long term pools, decayed over time).