Stable Carbon Isotope Variations in Cave Percolation Waters and their Implications in Four Caves of Guizhou, China

	Stable Carbon Isotope Variations in Cave Percolation Waters and their Implications in Four Caves of Guizhou, China
	Luo Weijun; Wang Shijie; Xie Xingneng; Zhou Yunchao; Li Tingyu
	2013
发表期刊	Acta Geologica Sinica
卷号	87 期号:5 页码:1396-1411
摘要	Monitoring and sampling of main plants, soil CO2, soil water, bedrock, spring water, drip water and its corresponding speleothem were performed at four cave systems of Guizhou, Southwest China, from April 2003 to May 2004, in order to understand stable carbon isotope ratios variations of dissolved inorganic Carbon (DIC) in cave percolation waters (C-13(DIC)) and their implications for paleoclimate. Stable carbon isotopic compositions and ions (Ca, Mg, Sr, SO4, Cl etc.) were measured for all samples. The results indicate that there are significant differences among the C-13(DIC) values from inter-cave, even inter-drip of intra-cave in the four caves. The C-13(DIC) values from the Liangfeng Cave (LFC) is lightest among the four caves, where vegetation type overlying the cave is primary forest dominated by tall trees with lighter average C-13 value (-29.9 parts per thousand). And there are remarkable differences in C-13(DIC) values of different drip waters in the Qixing Cave (QXC) and Jiangjun Cave (JJC), up to 6.9 parts per thousand and 7.8 parts per thousand, respectively. Further analyses show that the C-13(DIC) values in cave drip waters are not only controlled by vegetation biomass overlying the cave, but also hydro-geochemical processes. Therefore, accurate interpreting of C-13 recorded in speleothems cannot be guaranteed if these effects of the above mentioned factors are not taken into consideration.
学科领域	环境地球化学
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.gyig.ac.cn/handle/352002/5001
专题	环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文环境地球化学国家重点实验室
推荐引用方式 GB/T 7714	Luo Weijun,Wang Shijie,Xie Xingneng,et al. Stable Carbon Isotope Variations in Cave Percolation Waters and their Implications in Four Caves of Guizhou, China[J]. Acta Geologica Sinica,2013,87(5):1396-1411.
APA	Luo Weijun,Wang Shijie,Xie Xingneng,Zhou Yunchao,&Li Tingyu.(2013).Stable Carbon Isotope Variations in Cave Percolation Waters and their Implications in Four Caves of Guizhou, China.Acta Geologica Sinica,87(5),1396-1411.
MLA	Luo Weijun,et al."Stable Carbon Isotope Variations in Cave Percolation Waters and their Implications in Four Caves of Guizhou, China".Acta Geologica Sinica 87.5(2013):1396-1411.

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