If the managed and natural responses of all land to both anthropogenic environmental change and natural climate variability, estimated to be a gross sink of –12.5 ± 3.2 GtCO 2 yr–1 for the period 2010–2019, are included with land use emissions, then land overall, constituted a net sink of –6.6 ± 5.2 GtCO 2 yr–1 in terms of CO 2 emissions