Regional Carbon Budgets (IMAGE) Science China Press Caption Carbon storage change from inventories (?C in red) and lateral fluxes from trade and riverine carbon export to the ocean for different regions of the globe (in blue) for the 2000s. The resulting bottom-up net land atmosphere C flux from the sum of ?C and lateral fluxes is given in dark green. An atmospheric convention is used, so that a negative ?C denotes an increase of land carbon stocks, and a negative net flux is also a net uptake of atmospheric CO2. The upper stacked bars on the left show the sub-components of the net land -atmosphere carbon balance of each region and the resulting imbalance between net primary production and soil heterotrophic respiration, a negative value indicating that soil heterotrophic respiration is smaller than net primary production. Credit ©Science China Press Usage Restrictions Use with credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.