Predicted global distribution of the soil organic carbon stock in tonnes per ha for 0–200 centimetres.

<p>Total soil organic carbon stock (here displayed on a log-scale) was estimated as a sum of soil organic carbon stocks for six standard depths and adjusted for the depth to bedrock. Projected in the Sinusoidal equal area projection to give a realistic presentation of areas. Vast deserts (e.g. Sahara or Gobi) can be assumed to contain close to zero organic carbon stock. See also <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0105992#pone-0105992-g011" target="_blank">Figure 11</a>.