Articles | Volume 20, issue 8
https://doi.org/10.5194/bg-20-1559-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-20-1559-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
19 Apr 2023
Research article |
| 19 Apr 2023
| 19 Apr 2023
Mapping soil organic carbon fractions for Australia, their stocks, and uncertainty
Mercedes Román Dobarco
CORRESPONDING AUTHOR
Sydney Institute of Agriculture & School of Life and Environmental Sciences, The University of Sydney, 1 Central Avenue, Eveleigh, 2015, NSW, Australia
Alexandre M. J-C. Wadoux
Sydney Institute of Agriculture & School of Life and Environmental Sciences, The University of Sydney, 1 Central Avenue, Eveleigh, 2015, NSW, Australia
Brendan Malone
CSIRO Agriculture and Food, Black Mountain, ACT, Australia
Budiman Minasny
Sydney Institute of Agriculture & School of Life and Environmental Sciences, The University of Sydney, 1 Central Avenue, Eveleigh, 2015, NSW, Australia
Alex B. McBratney
Sydney Institute of Agriculture & School of Life and Environmental Sciences, The University of Sydney, 1 Central Avenue, Eveleigh, 2015, NSW, Australia
Ross Searle
CSIRO Agriculture and Food, 306 Carmody Road, St Lucia, QLD, Australia
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Cited
25 citations as recorded by crossref.
- Advancing Soil Security with Soil Spectroscopy: The efficient estimation of indicators S. Evangelista et al. https://doi.org/10.1016/j.soisec.2025.100211
- Linking thermal analysis with size fractionation for low-cost quantification of soil organic carbon fractions C. Dǎmǎtîrcǎ et al. https://doi.org/10.1016/j.geoderma.2026.117854
- Enhancing Soil Carbon Storage: Developing high-resolution maps of topsoil organic carbon sequestration potential in Taiwan S. Jien et al. https://doi.org/10.1016/j.geoderma.2025.117369
- Phosphorus-modified biochar regulates CO2 emissions and bacterial communities in an incubation study of manganese-contaminated soils Y. Yang et al. https://doi.org/10.1016/j.biombioe.2025.107823
- Characterising and quantifying soil clay-sized minerals using mid-infrared spectroscopy Y. Huang et al. https://doi.org/10.1016/j.still.2025.106590
- Labile and stable organic matter components in agricultural soils Z. Artemyeva & B. Kogut https://doi.org/10.19047/0136-1694-2025-124-184-223
- Drivers of organic carbon dynamics in surface and subsurface agricultural soils of New South Wales, Australia S. Mia et al. https://doi.org/10.1071/SR25136
- Spatial evaluation of the soils capacity and condition to store carbon across Australia A. Wadoux et al. https://doi.org/10.1016/j.geoderma.2024.116805
- Update and expansion of the soil and landscape grid of Australia B. Malone et al. https://doi.org/10.1016/j.geoderma.2025.117226
- Depth-dependent accumulation and controls of particulate and mineral-associated organic carbon in Inner Mongolian grasslands H. Zheng et al. https://doi.org/10.1007/s11430-025-1647-y
- Space-time mapping of soil organic carbon stock and its local drivers: Potential for use in carbon accounting S. Ugbemuna Ugbaje et al. https://doi.org/10.1016/j.geoderma.2023.116771
- Temporal adjustment approach for high-resolution continental scale modeling of soil organic carbon L. Bokati et al. https://doi.org/10.1038/s41598-025-89503-1
- Designing and configuring monitoring sites to fulfill Australia’s national soil monitoring objectives B. Malone et al. https://doi.org/10.1071/SR25127
- Introducing an exergy-based model for soil restoration: quantifying energy demands for SOC rebuilding A. Hunakunti et al. https://doi.org/10.1016/j.geoderma.2025.117474
- Organic carbon distribution between structural and process pools in the gray forest soil of different land use T. Lebedeva et al. https://doi.org/10.19047/0136-1694-2024-118-79-127
- 内蒙古草地土壤颗粒态和矿物结合态有机碳的空间与垂直分布特征及其控制因素 浩. 郑 et al. https://doi.org/10.1360/N072025-0038
- Resprouting shrubs significantly contribute to Mediterranean forest carbon stocks with their root system M. Hattab et al. https://doi.org/10.1007/s10342-026-01881-x
- Deep learning of the particulate and mineral-associated organic carbon fractions using a compositional transform and mid-infrared spectroscopy M. Zhang et al. https://doi.org/10.1016/j.geoderma.2025.117207
- Using a comprehensive model for cropland types in relationships between soil bulk density and organic carbon to predict site-specific carbon stocks C. Hou et al. https://doi.org/10.1007/s11368-024-03829-3
- Geospatial and field-based digital mapping of soil organic carbon in Taiwan's agricultural and forest landscapes C. Syu et al. https://doi.org/10.1016/j.ecoinf.2025.103557
- Drivers of Input and Stabilisation Control Subsoil Organic Carbon Content in Perennial Pasture Grazing Systems E. McGuinness et al. https://doi.org/10.3390/soilsystems10020033
- Can a ramped high-temperature carbon analyser with thermal oxidation be used to quantify soil organic carbon pools? M. Veeragathipillai et al. https://doi.org/10.1016/j.talanta.2025.128358
- Predicting the proportion of centennially stable soil organic carbon using mid-infrared spectroscopy L. Pacini et al. https://doi.org/10.1016/j.geoderma.2025.117536
- Charcoal carbon pools and their persistence in boreal forest soils, Northwest Territories, Canada B. Robson et al. https://doi.org/10.1139/cjfr-2024-0178
- Effects of tillage reversal and crop rotation on soil health and soil organic carbon fractions and stocks in wheat-based cropping systems under dryland Morocco M. Diop et al. https://doi.org/10.1016/j.jafr.2026.102641
25 citations as recorded by crossref.
- Advancing Soil Security with Soil Spectroscopy: The efficient estimation of indicators S. Evangelista et al. https://doi.org/10.1016/j.soisec.2025.100211
- Linking thermal analysis with size fractionation for low-cost quantification of soil organic carbon fractions C. Dǎmǎtîrcǎ et al. https://doi.org/10.1016/j.geoderma.2026.117854
- Enhancing Soil Carbon Storage: Developing high-resolution maps of topsoil organic carbon sequestration potential in Taiwan S. Jien et al. https://doi.org/10.1016/j.geoderma.2025.117369
- Phosphorus-modified biochar regulates CO2 emissions and bacterial communities in an incubation study of manganese-contaminated soils Y. Yang et al. https://doi.org/10.1016/j.biombioe.2025.107823
- Characterising and quantifying soil clay-sized minerals using mid-infrared spectroscopy Y. Huang et al. https://doi.org/10.1016/j.still.2025.106590
- Labile and stable organic matter components in agricultural soils Z. Artemyeva & B. Kogut https://doi.org/10.19047/0136-1694-2025-124-184-223
- Drivers of organic carbon dynamics in surface and subsurface agricultural soils of New South Wales, Australia S. Mia et al. https://doi.org/10.1071/SR25136
- Spatial evaluation of the soils capacity and condition to store carbon across Australia A. Wadoux et al. https://doi.org/10.1016/j.geoderma.2024.116805
- Update and expansion of the soil and landscape grid of Australia B. Malone et al. https://doi.org/10.1016/j.geoderma.2025.117226
- Depth-dependent accumulation and controls of particulate and mineral-associated organic carbon in Inner Mongolian grasslands H. Zheng et al. https://doi.org/10.1007/s11430-025-1647-y
- Space-time mapping of soil organic carbon stock and its local drivers: Potential for use in carbon accounting S. Ugbemuna Ugbaje et al. https://doi.org/10.1016/j.geoderma.2023.116771
- Temporal adjustment approach for high-resolution continental scale modeling of soil organic carbon L. Bokati et al. https://doi.org/10.1038/s41598-025-89503-1
- Designing and configuring monitoring sites to fulfill Australia’s national soil monitoring objectives B. Malone et al. https://doi.org/10.1071/SR25127
- Introducing an exergy-based model for soil restoration: quantifying energy demands for SOC rebuilding A. Hunakunti et al. https://doi.org/10.1016/j.geoderma.2025.117474
- Organic carbon distribution between structural and process pools in the gray forest soil of different land use T. Lebedeva et al. https://doi.org/10.19047/0136-1694-2024-118-79-127
- 内蒙古草地土壤颗粒态和矿物结合态有机碳的空间与垂直分布特征及其控制因素 浩. 郑 et al. https://doi.org/10.1360/N072025-0038
- Resprouting shrubs significantly contribute to Mediterranean forest carbon stocks with their root system M. Hattab et al. https://doi.org/10.1007/s10342-026-01881-x
- Deep learning of the particulate and mineral-associated organic carbon fractions using a compositional transform and mid-infrared spectroscopy M. Zhang et al. https://doi.org/10.1016/j.geoderma.2025.117207
- Using a comprehensive model for cropland types in relationships between soil bulk density and organic carbon to predict site-specific carbon stocks C. Hou et al. https://doi.org/10.1007/s11368-024-03829-3
- Geospatial and field-based digital mapping of soil organic carbon in Taiwan's agricultural and forest landscapes C. Syu et al. https://doi.org/10.1016/j.ecoinf.2025.103557
- Drivers of Input and Stabilisation Control Subsoil Organic Carbon Content in Perennial Pasture Grazing Systems E. McGuinness et al. https://doi.org/10.3390/soilsystems10020033
- Can a ramped high-temperature carbon analyser with thermal oxidation be used to quantify soil organic carbon pools? M. Veeragathipillai et al. https://doi.org/10.1016/j.talanta.2025.128358
- Predicting the proportion of centennially stable soil organic carbon using mid-infrared spectroscopy L. Pacini et al. https://doi.org/10.1016/j.geoderma.2025.117536
- Charcoal carbon pools and their persistence in boreal forest soils, Northwest Territories, Canada B. Robson et al. https://doi.org/10.1139/cjfr-2024-0178
- Effects of tillage reversal and crop rotation on soil health and soil organic carbon fractions and stocks in wheat-based cropping systems under dryland Morocco M. Diop et al. https://doi.org/10.1016/j.jafr.2026.102641
Saved (final revised paper)
Latest update: 09 Jun 2026
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.
Soil organic carbon (SOC) is of a heterogeneous nature and varies in chemistry, stabilisation...
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