Werner et al. (2022): Potential of Land-Neutral Negative Emissions Through Biochar Sequestration

C. Werner, W. Lucht, D. Gerten, C. Kammann IN: Earth’s Future Vol. 10, Issue 7, https://doi.org/10.1029/2021EF002583

The autors assess feasible negative emissions contributions of alternative, more sustainable pyrogenic carbon capture and storage (PyCCS) based on land-neutral biomass production using biochar-mediated yield increases to maintain calorie production while realizing net CO₂ extraction from the atmosphere. Simulations with a biosphere model indicate that such a land- and calorie-neutral PyCCS approach could sequester 0.44–2.62 Gt CO₂ yr⁻¹ depending on the assumed biochar-mediated yield increase achievable on (sub-)tropical cropland (15%, 20% and 30%, respectively).

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