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Quantify global stocks and storage capacity of mineral-associated soil organic carbon and assess how mineral undersaturation governs carbon sequestration rates.

July 1, 2022SHILAP Revista de lepidopterologíaOpen Access

Global stocks and capacity of mineral-associated soil organic carbon

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Authors

KGKaterina GeorgiouLawrence Livermore National Laboratory RJRobert B. JacksonBrigham Young University OVOlga VinduškováCharles University

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Implication

Global spatial analysis reveals substantial mineral-associated carbon undersaturation in non-permafrost soils, highlighting key opportunities for targeted carbon sequestration.

Key Points

Quantify global stocks and storage capacity of mineral-associated soil organic carbon and assess how mineral undersaturation governs carbon sequestration rates.
Analyzed 1,144 globally distributed soil profiles to model spatially resolved mineral-associated organic carbon stocks and capacity down to 1 m depth in non-permafrost mineral soils.
Evaluated carbon sequestration efficiency across 103 empirical carbon-accrual measurements following agricultural and land management interventions worldwide.
Current mineral-associated organic carbon stocks total 899 Pg C down to 1 m, representing 66% of surface and 70% of deeper soil organic carbon, but only 42% and 21% of mineralogical capacity, respectively.
Carbon accrual rates average three-times higher in soils at one-tenth of their mineralogical capacity compared with soils at one-half of their capacity, with the largest capacity deficits located in agricultural regions and deeper soil profiles.

Cite This Study

Georgiou et al. (2022) studied this question.

synapsesocial.com/papers/69d8140d05ee2ba81dbef012 https://doi.org/10.1038/s41467-022-31540-9

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Implication

Global spatial analysis reveals substantial mineral-associated carbon undersaturation in non-permafrost soils, highlighting key opportunities for targeted carbon sequestration.

Global stocks and capacity of mineral-associated soil organic carbon

Discussion

Member takes

Implication

Key Points

Cite This Study

Global stocks and capacity of mineral-associated soil organic carbon

Discussion

Member takes

Implication

Key Points

Cite This Study

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