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本文以黄龙钙华岩芯为主要研究对象,利用210Pb定年技术在测定年轻碳酸盐样品短时间尺度上的优势建立了研究区近100年来高精度的年代标尺及环境记录;通过碳氧稳定同位素的分析,讨论了钙华稳定同位素记录与器测气候数据的相关性特征,并与其他定年技术所获得的结果进行了相互验证。研究区钙华δ18O在1908～2004年时段内的变化范围为-12.13‰～-10.42‰,平均值为-11.23‰,变化幅度达到了1.7‰。同属西南季风区、由于海拔效应和距离水汽来源远近不同等因素的影响,在同时段内黄龙钙华δ18O的变化范围和变化幅度都比董歌洞和Kahf Defore洞的δ18O记录要大,说明处于中纬度、高海拔的黄龙钙华相对于低海拔的董歌洞和Kahf Defore洞石笋对气候环境的响应可能更加敏感。
In this paper, the main research object is Huanglong travertine core. 210Pb dating technique was used to determine the short-time scale of young carbonate samples. The dating and environmental records of the study area were established with high precision over the past 100 years. The characteristics of the correlation between tracer stable isotope records and measured climatic data were discussed. The results were verified with the results obtained from other dating techniques. The range of travertine δ18O in the study area ranged from -12.13 ‰ to -10.42 ‰ in 1908 ~ 2004, with an average of -11.23 ‰, with a change range of 1.7 ‰. Both belong to the southwest monsoon region, because of the altitude effect and the distance from the water vapor source distance and other factors, in the same period Huanglong travertine δ18O range and change range than Dong song cave and Kahf Defore cave δ18O record larger, indicating that at Mid-latitude and high altitude Huanglong travertine may be more sensitive to climatic and environmental changes than Donggong and Kahf Defore burrows at low altitudes.