Increasing soil organic carbon (SOC) stocks is a promising way to mitigate the increase in atmospheric CO 2 concentration. Based on a simple ratio between CO 2 anthropogenic emissions and SOC stocks worldwide, it has been suggested that a 0.4% (4 per 1000) yearly increase in SOC stocks could compensate for current anthropogenic CO 2 emissions. Here, we used a reverse RothC modelling approach to estimate the amount of C inputs...