Articles | Volume 1, issue 1
Review article
16 Apr 2015
Review article |  | 16 Apr 2015

Global distribution of soil organic carbon – Part 1: Masses and frequency distributions of SOC stocks for the tropics, permafrost regions, wetlands, and the world

M. Köchy, R. Hiederer, and A. Freibauer


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Short summary
Soils contain 1062Pg organic C (SOC) in 0-1m depth based on the adjusted Harmonized World Soil Database. Different estimates of bulk density of Histosols cause an uncertainty in the range of -56/+180Pg. We also report the frequency distribution of SOC stocks by continent, wetland type, and permafrost type. Using additional estimates for frozen and deeper soils, global soils are estimated to contain 1325Pg SOC in 0-1m and ca. 3000Pg, including deeper layers.