摘要
两个代表不同生长时期、不同生长气候区的树轮样品研究结果表明，树轮^（１３）Ｃ同位素组成记录了树轮生长时大气ＣＯ_２的同位素组成和气候因子特点。现代样品^（１３）Ｃ同位素组成反映了近代大气ＣＯ_２浓度和组成变化特点。古代样品良好的同位素再现性，肯定了树轮^（１３）Ｃ同位素作为历史时期气候记录仪的可行性。
The study on two tree ring samples,which charcterize two different periods and climatic zones,shows that the 13C isotopic composition of tree rings may effectively record the variation of atmospheric CO2 and climatic factors at their growth time.The modern sample records the fluctuation of modern atmospheric CO2.The good reproductivity of δ13C of the ancient sample comfirms the possibility to use 13C isotopic composition of tree rings as a proxy recorder of past climate.
出处
《地球化学》
CAS
CSCD
北大核心
1994年第C00期210-216,共7页
Geochimica
基金
国家自然科学基金资助项目
