Fig. 6.

Response of SOC to doubling and removal of C inputs in long-term litter manipulations. a Percent change in SOC at Detritus Input and Removal Treatment (DIRT) experiments after a sustained 2× step increase in inputs. b Percent change in SOC at DIRT and Long-Term Bare Fallow (LTBF) experiments after sustained 0× inputs. Points indicate means and bars the s.e.m. Individual points are separated by site in Supplementary Fig. 10 and data sources are reported in Supplementary Tables 2 and 3