龙凤洞、九仙洞、神农宫洞石笋14C年代数据集(全新世)
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以不同气候带的三个洞穴(中国北方龙凤洞、中部九仙洞、南方神农宫洞)的石笋样本为研究对象,利用MC–ICP-MS 230Th定年技术和AMS 14C定年技术,通过测试石笋同层样本的U-Th、碳酸盐14C(14CCarb)和可溶有机碳14C(14CDOC)年龄,将三种年龄进行对比,分析14CCarb和14CDOC年龄在时空尺度上的变化特征及其主要的驱动因素,并探讨土壤有机碳周转时间在时空尺度上的特点。
Taking stalagmite samples from three caves across distinct climatic zones (Longfeng Cave in northern China, Jiuxian Cave in central China, and Shennonggong Cave in southern China) as study materials, this study employs MC-ICP-MS ²³⁰Th dating and AMS ¹⁴C dating techniques to measure the U-Th, carbonate ¹⁴C (¹⁴C_Carb) and dissolved organic carbon ¹⁴C (¹⁴C_DOC) ages of co-stratified stalagmite samples. By comparing the three sets of ages, we analyze the spatiotemporal variation characteristics and main driving factors of ¹⁴C_Carb and ¹⁴C_DOC ages, and investigate the spatiotemporal features of soil organic carbon turnover time.




