(Table S3) Compilation of D14C source data from the literature and this study...

Sampling depth is given in meters below surface (m b.s.), except for values from Bolshiyanov et al. (2015) where height is given in meters above water level.采样深度以地表以下米数为单位（单位标识：m b.s.），但Bolshiyanov等人（2015）的研究数据除外，该部分数据的高度以水位以上米数标注。