Burned soil surface radiocarbon values for moss macrofossils plucked from the Anaktuvuk River Fire sites

We used radiocarbon dating of the organic soil surface remaining post-fire to examine whether the fire burned into ancient and likely irreplaceable soil C pools. Suprisingly, it did not; all radiocarbon dates from burned soil surfaces contained bomb carbon, setting the maximum age of the burned soil surfaces at ~50 years.

我们针对火灾后残留的有机土壤表层开展放射性碳定年法（radiocarbon dating），旨在探究此次火灾是否波及了古老且大概率不可替代的土壤碳库（soil C pools）。令人意外的是，结果并未出现此类波及；所有取自过火土壤表层的放射性碳测年数据均检出核爆碳（bomb carbon），据此可将过火土壤表层的最大年龄限定为约50年。