Fig. 2: Magnitude of mitigation, and relationship between studies of biochar mitigation potential. | Communications Earth & Environment

Fig. 2: Magnitude of mitigation, and relationship between studies of biochar mitigation potential.

From: Estimates vary but credible evidence points to gigaton-scale climate change mitigation potential of biochar

Fig. 2

Colour scheme indicates the relationships between studies: related studies share the same colour tone. The area of the circle shows the annual mitigation potential (see Key for interpretation) with the outer and inner circles showing maximum and minimum potentials, respectively. The proportions of carbon dioxide removal (CDR; darker shade) and non-CDR (lighter shade) are presented if quantified in the corresponding study. Symbols are used to show the type of assessment: technical, economic, or sustainable potential. *Shows the ‘biochar basic’ assessment, providing 100 Gt C removal over 2020–2100 (see Supplementary Table 1). ** Range for feedstock from organic residues, wastes, and biomass crops on abandoned cropland (see Supplementary Table 1).

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