中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Trace-element variations in an annually layered stalagmite as recorders of climatic changes and anthropogenic pollution in Central China

文献类型:期刊论文

作者An, ZS (An, Zhisheng)[ 1 ]; Lo, L (Lo, Li)[ 2 ]; Cai, YJ (Cai, Yanjun)[ 1 ]; Shen, CC (Shen, Chuan-Chou)[ 2 ]; Tan, LC (Tan, Liangcheng)[ 1 ]; Cheng, H (Cheng, Hai)[ 3 ]
刊名Quaternary Research
出版日期2014-03-15
卷号81期号:2页码:181-188
关键词Annually Layered Stalagmite Trace Elements Ree Geochemistry Climate Change Environmental Pollution Central China
文献子类期刊论文
英文摘要

We analyzed variations in the Sr/Ca, Ba/Ca, REE/Ca (REE: rare earth element), Zn/Ca, and Pb/Ca ratios preserved in an annually layered stalagmite, XL21, from central China. The stalagmite record spans the 95 year period AD 1914–2008. The Sr/Ca and Ba/Ca ratios have a significant positive correlation with the stalagmite's growth rate, suggesting that they were primarily controlled by growth-rate variations. Variations in REE/Ca ratios are consistent with local temperature changes, suggesting temperature influenced REE concentrations in the stalagmite over decadal to annual timescales. Higher temperature in this humid area can increase vegetation cover, microbial activity, and organic decomposition in the soil, resulting in enhanced pCO2, organic matter concentration and reduced pH, and consequently increased REE mobilization from the overlying soil layer and host rock. Higher temperatures may also increase the natural Zn mobilization from the overlying soil mediated by organic matter and consequently may have led to increased Zn retention in XL21. An increasing trend is seen in the Pb/Ca ratios from XL21 since 1985, which is consistent with increased lead production in this area, and indicates an increase in mine-derived lead pollution in the local environment over the past 30 years.

语种英语
源URL[http://ir.ieecas.cn/handle/361006/9788]  
专题地球环境研究所_现代环境研究室
通讯作者Tan, LC (Tan, Liangcheng)[ 1 ]
作者单位1.Institute of Global Environmental Change, Xi'an Jiaotong University, Xi'an 710049, China
2.High-precision Mass Spectrometry and Environment Change Laboratory (HISPEC), Department of Geosciences, National Taiwan University, Taipei 10617, Taiwan;
3.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China;
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GB/T 7714
An, ZS ,Lo, L ,Cai, YJ ,et al. Trace-element variations in an annually layered stalagmite as recorders of climatic changes and anthropogenic pollution in Central China[J]. Quaternary Research,2014,81(2):181-188.
APA An, ZS ,Lo, L ,Cai, YJ ,Shen, CC ,Tan, LC ,&Cheng, H .(2014).Trace-element variations in an annually layered stalagmite as recorders of climatic changes and anthropogenic pollution in Central China.Quaternary Research,81(2),181-188.
MLA An, ZS ,et al."Trace-element variations in an annually layered stalagmite as recorders of climatic changes and anthropogenic pollution in Central China".Quaternary Research 81.2(2014):181-188.

入库方式: OAI收割

来源:地球环境研究所

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