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Hydrogeochemistry and δ 13 C DIC and δ 18 O H2O composition of three Chinese Tibetan Plateau lakes
Xiaodan Wang;  Shijie Li;  Cong-Qiang Liu;  Khan M. G. Mostofa;  Zhiqi Zhao;  Rongqin Luo
2017
Source Publication Isotopes in Environmental and Health Studies
Pages1-17
Abstract

This study established the hydrochemistry and stable isotope variations in three lakes, namely brackish Zigetang Co, freshwater Cona and Ranwu lakes located in the central and southeastern Tibetan Plateau of China. Vertical profile fluctuations in the water column, such as temperature and dissolved oxygen (DO)concentration, displayed significant differences which were linked to the thermocline. The hydrochemistry of the three lakes showed that HCO−3 as the dominant anion, whereas Na+ is the main cation in Zigetang Co and Cona lake and Ca2+ is the prevailing cation in Ranwu lake. In Zigetang Co, K+ and Na+ concentrations
decreased by 42 % from 1999 to 2012, caused by the enlargement of the lake area, documented by field investigations carried out in 1998, 2002, 2006 and 2012. The δ13CDIC and δ18OH2O values analysed from the three lakes varied from −6.0 to 2.0 ‰, and from −14.8 to −6.4 ‰, respectively. The closed Zigetang lake showed higher δ13CDIC and δ18OH2O values compared to those of the rivers, the semi-closed Cona and open Ranwu lakes. The δ13CDIC values of lake water in Zigetang Co
were mainly controlled by CO2 exchange between lake water and
atmosphere; the δ18OH2O values were dominated by the
evaporation/freshwater input ratios.

KeywordCarbon-13 Hydrochemistry Isotope Hydrology Oxygen-18 Physicochemical Characteristics Stable Isotope Analysis Tibetan Plateau Lakes
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/8401
Collection环境地球化学国家重点实验室
Affiliation1.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, Guizhou, China
2.University of Chinese Academy of Sciences, Beijing, China
3.Institute of Surface-Earth System Science, Tianjin University, Tianjin, China
Recommended Citation
GB/T 7714
Xiaodan Wang;Shijie Li;Cong-Qiang Liu;Khan M. G. Mostofa;Zhiqi Zhao;Rongqin Luo. Hydrogeochemistry and δ 13 C DIC and δ 18 O H2O composition of three Chinese Tibetan Plateau lakes[J].  Isotopes in Environmental and Health Studies,2017:1-17.
APA Xiaodan Wang;Shijie Li;Cong-Qiang Liu;Khan M. G. Mostofa;Zhiqi Zhao;Rongqin Luo.(2017).Hydrogeochemistry and δ 13 C DIC and δ 18 O H2O composition of three Chinese Tibetan Plateau lakes. Isotopes in Environmental and Health Studies,1-17.
MLA Xiaodan Wang;Shijie Li;Cong-Qiang Liu;Khan M. G. Mostofa;Zhiqi Zhao;Rongqin Luo."Hydrogeochemistry and δ 13 C DIC and δ 18 O H2O composition of three Chinese Tibetan Plateau lakes". Isotopes in Environmental and Health Studies (2017):1-17.
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