干旱区生态环境知识资源中心(Arid): 巴丹吉林沙漠东南部湖泊和地下水的氢氧同位素特征

Arid

	巴丹吉林沙漠东南部湖泊和地下水的氢氧同位素特征
其他题名	Features of Hydrogen and Oxygen Isotopes in Lakes and Groundwater in Southeast Badain Jaran Desert
	张华安; 王乃昂; 李卓仑; 董春雨; 陆莹; 李贵鹏
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2011
卷号	31 期号:6 页码:1623-1629
中文摘要	通过对巴丹吉林沙漠湖泊和地下水氢氧同位素分析，讨论了沙漠湖水和地下水的补给关系，并结合地下水可溶性固体总量的特征，进一步探讨了巴丹吉林沙漠的蒸发特性。根据氢氧同位素的分析结果，本研究区的蒸发趋势线方程为：deltaD=4.1delta~(18)-30.02(n=37，R~2=0.94)较低的斜率显示了巴丹吉林沙漠强烈的蒸发环境特征。巴丹吉林沙漠东南部湖泊和地下水具有相似的蒸发趋势，推测两者之间存在补给关系。根据沙漠腹地地下水氧同位素值富集程度高于东南部地下水氧同位素值的特点，得出前者蒸发较后者强烈。进而对比其他干旱条件下盐湖的蒸发，结果显示巴丹吉林沙漠湖水存在过度蒸发效应。
英文摘要	The Badain Jaran Desert is located in the centre of the Alxa Plateau to north of the Qilian Mountains and the Tibetan Plateau. It is the second largest desert in China with an area of 52162 km~2. Elevation in the interior of the Badain Jaran ranges from 1500 m in the southeast to 900 m in the northwest, producing a regional hydraulic gradient from SE to NW. The unique desert environment with its lakes attracted many scientific investigations, so in this paper, by analyzing hydrogen and oxygen isotopes in the desert lakes and groundwater in the southeast of Badain Jaran Desert, connecting with totally dissolved solids (TDS) of groundwater, we discussed the recharge relationship between lakes and groundwater in the desert area, and made a further investigation on the evaporation in the Badain Jaran Desert. The hydrogen and oxygen isotope test indicated that the averageddeltaD anddelta~(18) 0 compositions had a relationship of deltaD=4.1delta~(18) O-30.02% o(n=37, R~2=0.94), and the low slope of the evaporation line indicated the enhanced evaporation in the Badain Jaran Desert. The lakes had a similar evaporation trend with the groundwater in the southeast Badain Jaran Desert, and it implied that there was some degree of recharge between them. Comparison of the isotopic enrichment degrees of groundwater in the central region and the southeastern parts of the desert showed that the groundwater evaporated in the central region was more severe than in the southeast margin. Comparison of the evaporation of lagoon in the study area and in other arid regions illustrated that the lakes in the Badain Jaran Desert were affected by the effect of excessive evaporation.
中文关键词	巴丹吉林沙漠 ; 氢氧同位素 ; 地下水 ; 大气降水线 ; 蒸发效应
英文关键词	Badain Jaran Desert hydrogen and oxygen isotopes groundwater local meteoric water line evaporation effect
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:4346802
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227585
作者单位	兰州大学资源环境学院/干旱区水循环与水资源研究中心, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	张华安,王乃昂,李卓仑,等. 巴丹吉林沙漠东南部湖泊和地下水的氢氧同位素特征[J]. 兰州大学,2011,31(6):1623-1629.
APA	张华安,王乃昂,李卓仑,董春雨,陆莹,&李贵鹏.(2011).巴丹吉林沙漠东南部湖泊和地下水的氢氧同位素特征.中国沙漠,31(6),1623-1629.
MLA	张华安,et al."巴丹吉林沙漠东南部湖泊和地下水的氢氧同位素特征".中国沙漠 31.6(2011):1623-1629.