Fig. 1From: Uncertainties of soil organic carbon stock estimation caused by paleoclimate and human footprint on the Qinghai PlateauGeographic location of the Qinghai Plateau. Qai: Qaidam Basin; ThR: Three Rivers; Qim: Qilian Mountains; QLB: Qinghai Lake Basin; HeV: Hehuang Valley. The altitude [27] and frozen soil map [28] were obtained from the National Tibetan Plateau Data CenterBack to article page