Articles | Volume 20, issue 8
https://doi.org/10.5194/bg-20-1559-2023
https://doi.org/10.5194/bg-20-1559-2023
Research article
 | 
19 Apr 2023
Research article |  | 19 Apr 2023

Mapping soil organic carbon fractions for Australia, their stocks, and uncertainty

Mercedes Román Dobarco, Alexandre M. J-C. Wadoux, Brendan Malone, Budiman Minasny, Alex B. McBratney, and Ross Searle

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Short summary
Soil organic carbon (SOC) is of a heterogeneous nature and varies in chemistry, stabilisation mechanisms, and persistence in soil. In this study we mapped the stocks of SOC fractions with different characteristics and turnover rates (presumably PyOC >= MAOC > POC) across Australia, combining spectroscopy and digital soil mapping. The SOC stocks (0–30 cm) were estimated as 13 Pg MAOC, 2 Pg POC, and 5 Pg PyOC.
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