Fig. 2From: Changes of lake organic carbon sinks from closed basins since the Last Glacial Maximum and quantitative evaluation of human impactsThe lithology and 14C/OSL dating results from 12 terminal lakes in the closed basins of the Qilian Mountains. a Lithology of the 12 lake sections. b Comparison of the calibrated 14C (solid lines) and OSL ages (dashed lines) in the 5 closed basins of the Qilian Mountains. (Lithology data of Qinghai Lake are from Liu et al. [28], other lithology and 14C/OSL data sources see Additional file 1: Table S1)Back to article page