5c45f545-6ca7-48c9-9544-c976e1aa27e8 urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2025-06-25T06:58:00 creation ISO 19115 2016 Australian Soil Carbon Sequestration Potential, 2023 5c45f545-6ca7-48c9-9544-c976e1aa27e8 Soil is a huge carbon (C) reservoir, but where and how much extra C can be stored is unknown. Here, using 5089 observations, we estimated that the uppermost 30 cm of Australian soil holds 13 Gt (10–18 Gt) of mineral-associated organic carbon (MAOC). Using a frontier line analyses, described in Viscarra Rossel et al. (2023), we estimated the maximum amounts of MAOC that Australian soils could store in their current environments, and calculated the MAOC deficit, or C sequestration potential. We propagated the uncertainties from the frontier fitting and mapped the estimates of these values over Australia using machine learning and kriging with external drift (KED). The maps show regions where the soil is more in MAOC deficit and has greater sequestration potential. The modelling shows that the variation over the whole continent is determined mainly by climate, linked to vegetation, and soil mineralogy. We find that the MAOC deficit in Australian soil is 40 Gt (25–60 Gt). The deficit in the vast rangelands is 20.84 Gt (13.97–29.70 Gt) and the deficit in cropping soil is 1.63 Gt (1.12–2.32 Gt). Our findings suggest that the C sequestration potential of Australian soil is limited by climate. {"type": "Polygon", "coordinates": [[[113.338953078, -43.6345972634], [153.569469029, -43.6345972634], [153.569469029, -10.6681857235], [113.338953078, -10.6681857235], [113.338953078, -43.6345972634]]]} 113.338953078 153.569469029 -43.6345972634 -10.6681857235 Viscarra Rossel, R. A., Webster, R., Zhang, M., Shen, Z., Dixon, K., Wang, Y.-P., & Walden, L. (2023). How much organic carbon could the soil store? The carbon sequestration potential of Australian soil. Global Change Biology, 30, e17053. https://doi.org/10.1111/gcb.17053 documentDigital HTML How much organic carbon could the soil store? The carbon sequestration potential of Australian soil documentDigital Method documentation HTML soil_carbon_seq documentDigital Australian Soil Carbon Sequestration Potential WMS Viscarra Rossel, R. A., Webster, R., Zhang, M., Shen, Z., Dixon, K., Wang, Y.-P., & Walden, L. (2023). How much organic carbon could the soil store? The carbon sequestration potential of Australian soil. Global Change Biology, 30, e17053. https://doi.org/10.1111/gcb.17053 documentDigital HTML How much organic carbon could the soil store? The carbon sequestration potential of Australian soil documentDigital Method documentation HTML Cloud Optimised GeoTIFFs - Australian Soil Carbon Sequestration Potential documentDigital HTML Viscarra Rossel, R. A., Webster, R., Zhang, M., Shen, Z., Dixon, K., Wang, Y.-P., & Walden, L. (2023). How much organic carbon could the soil store? The carbon sequestration potential of Australian soil. Global Change Biology, 30, e17053. https://doi.org/10.1111/gcb.17053 documentDigital HTML How much organic carbon could the soil store? The carbon sequestration potential of Australian soil documentDigital Method documentation HTML Landscape Data Visualiser - Australian Soil Carbon Sequestration Potential documentDigital HTML Viscarra Rossel, R. A., Webster, R., Zhang, M., Shen, Z., Dixon, K., Wang, Y.-P., & Walden, L. (2023). How much organic carbon could the soil store? The carbon sequestration potential of Australian soil. Global Change Biology, 30, e17053. https://doi.org/10.1111/gcb.17053 documentDigital HTML How much organic carbon could the soil store? The carbon sequestration potential of Australian soil documentDigital Method documentation HTML ro-crate-metadata.json documentDigital HTML Figure of the MAOC, C_Amax and C_def documentDigital PNG Unnamed resource documentDigital PNG