Measures with greatest potential for CDR were afforestation/reforestation (0.5 to 10.1 GtCO 2-eq yr–1) (medium confidence), soil carbon sequestration in croplands and grasslands (0.4 to 8.6 GtCO 2-eq yr–1) (medium confidence) and BECCS (0.4 to 11.3 GtCO 2-eq yr–1)