干旱区生态环境知识资源中心(Arid): 巴丹吉林沙漠湖泊钙华的水化学成因

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	巴丹吉林沙漠湖泊钙华的水化学成因
其他题名	Hydrochemical Cause of Lakes’Tufa in Badain Jaran Desert
	曹乐; 聂振龙; 刘学全; 王哲; 孟令群; 姜高磊
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2017
卷号	37 期号:5 页码:1026-1034
中文摘要	通过对巴丹吉林沙漠7个湖泊的钙华分布特征调查研究,以及对相关水样的化学成分分析,初步探讨了沙漠东南区湖泊钙华的水化学成因。结果显示:湖水水化学类型为Cl-Na型,Ca~(2+)含量极低,CO_3~(2-)或HCO_3~-含量较高;湖四周地下水水化学类型以Cl-SO_4-Na型、Cl-CO_3-Na型为主,CO_3~(2-)或HCO_3~-含量较低,Ca~(2+)含量较高,部分湖水中霰石、方解石矿物饱和指数SI>0。PHREEQC软件模拟结果显示,地下水与湖水混合过程中,方解石、霰石饱和指数明显增大。我们认为咸淡水混合效应是钙华形成的重要原因,同时存在湖水蒸发浓缩作用沉淀的碳酸钙;混合端元的组分决定了最大SI时的混合比例以及最大SI值,温度相对混合效应影响较小。
英文摘要	This paper discusses the cause of the tufa in Badain Jaran Desert,throughout investigating the distribution of the tufa and analyzing the hydrochemical characteristics of water samples.Results indicates that the lake water is the type of Cl-Na,along with low concentration of Ca~(2+)and high concentration of CO_3~(2-) +HCO_3~- and groundwater are the types of Cl-SO_4-Na and Cl-CO_3-Na,with low concentration of CO_3~(2-) + HCO~3~- and high concentration of Ca~(2+).Saturation index of calcite and aragonite in some lake water is more than 0.Based on the simulation of PHREEQC,the mixing between lake water and groundwater results in SI (saturation index)increasing.Evaporation concentration effect in the lake and the mixing effect between fresh water and salt water are the main cause of calcium carbonate and tufa precipitation.The mixing ratio companied the maximum saturation index is mainly determined by the composition of end member mixing water,while the contribution of temperature is small compared with mixing effect.
中文关键词	巴丹吉林沙漠 ; 钙华 ; 混合效应 ; 水文地球化学特征
英文关键词	Bardain Jaran Desert tufa mixing effect hydrochemical characteristics
语种	中文
国家	中国
收录类别	CSCD
WOS类目	MINERALOGY
WOS研究方向	Mineralogy
CSCD记录号	CSCD:6093711
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237129
作者单位	中国地质科学院水文地质环境地质研究所, 石家庄, 河北 050061, 中国
推荐引用方式 GB/T 7714	曹乐,聂振龙,刘学全,等. 巴丹吉林沙漠湖泊钙华的水化学成因[J],2017,37(5):1026-1034.
APA	曹乐,聂振龙,刘学全,王哲,孟令群,&姜高磊.(2017).巴丹吉林沙漠湖泊钙华的水化学成因.中国沙漠,37(5),1026-1034.
MLA	曹乐,et al."巴丹吉林沙漠湖泊钙华的水化学成因".中国沙漠 37.5(2017):1026-1034.