Fig. 6

Impact of human disturbances on relative changes (%) in estimated SOC stock caused by paleoclimate. a The relative changes (%) in estimated SOC stock caused by paleoclimate among different vegetation types at 0–200 cm depth on the Qinghai Plateau. The dotted points represent the mean values of the relative change in different vegetation types. b The relationship between the relative changes (%) in the estimated SOC stock caused by the paleoclimate at depths of 0–200 cm and the human footprint on the Qinghai Plateau. A piecewise linear regression model was fit, and breakpoints were detected by the “segmented” package [77] in R language. SOC represents soil organic carbon