地质学报2016，Vol.90Issue(2)：334-340,7.
川东北石笋120～103 ka BP 稳定碳同位素记录与控制机制
A Speleothemδ13C Record and Control Mechanism During 120~103ka B.P. from NE Sichuan,Central China
摘要
Abstract
A stalagmite (SZ2 )collected from Suozi Cave in NE Sichuan,China,established with δ13 C data, provides a high-resolution spleothemδ13 C time series during 120~103ka.The SZ2δ13 C record appeared to be significantly different from the long-term change trend of theδ18 O record.Theδ13 C record and growth rate of SZ2 show the consistency in the whole trend,which mainly reflected that CO2 degassing and carbonate sediment influenced by drip rates over a speleothem surface influence the SZ2δ13 C record on the long-time scale.On a short time scale,the SZ2δ13 C record appeared to be consistent with the change trend of theδ18 O record.The SZ2δ13 C record may be mainly influenced by vegetation above the cave(proportion of C3 to C4 plant),density of vegetation,soil microbial activity and cave ventilation.关键词
华中/石笋/δ13 C/滴率/古气候Key words
Central China/stalagmite/δ13 C/drip rate/paleoclimate引用本文复制引用
刘淑华,李汉杰,周厚云,黄嘉仪,陈琳,杨亮,陈琼,米小建,贺海波,邓肖敏,彭小桃..川东北石笋120～103 ka BP 稳定碳同位素记录与控制机制[J].地质学报,2016,90(2):334-340,7.基金项目
本文为国家自然科学基金项目（编号41473093，41271212和40973009）和教育部博士点基金项目（编号20120101110050）共同资助的成果。 （）
