干旱区生态环境知识资源中心(Arid): 从同位素和水化学成分对比看沙漠地区湖泊水补给来源以鄂尔多斯盆地木凯淖湖为例

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	从同位素和水化学成分对比看沙漠地区湖泊水补给来源以鄂尔多斯盆地木凯淖湖为例
其他题名	The Source of Lake Water Supply from the Comparison of Isotopic and Hydrochemical in Desert Area:Taking Mukainao Lake in Ordos Basin as an Example
	古丽波斯坦·吐逊江; 庞忠和; 尚彦军
来源期刊	新疆地质
ISSN	1000-8845
出版年	2020
卷号	38 期号:4 页码:546-551
中文摘要	在自然和人为因素影响下,沙漠地区湖泊面积萎缩成为影响地区经济发展和生态环境质量的主要因素。本文以鄂尔多斯盆地内封闭型木凯淖湖为例,采用氢氧稳定同位素方法和水化学特征法,统计了湖水稳定同位素delta ~(18)O和delta D特征,并同降水和地下水进行对比分析,揭示湖水补给来源,初步查明沙漠地区湖泊萎缩原因。研究发现,井水样品平均值为delta ~(18)O为-8.29,delta D为-62.86,湖周围浅层地下水delta ~(18)O平均值为-7.2,delta D为-57.46。湖水同位素数据因采样时间段的不同(7月,10月)表现出不同特征。7月份暴雨后delta ~(18)O平均值为-13.84,delta D为-99.61,与暴雨前的湖水样品相比明显贫化,与暴雨同位素丰度(平均delta ~(18)O/为-13.2,delta D为-93.56)一致。10月湖水蒸发线delta D=5.1delta ~(18)O-14,比7月蒸发线delta D=4.19delta ~(18)O-8.4斜率小,蒸发减弱。湖周围浅层地下水和中浅层井水同位素平均值相近,浅层地下水部分存在蒸发,蒸发线与湖水蒸发一致。夏季湖水同位素值远大于地下水同位素值,可回归到雨水线上,推测夏季湖水主要由降水补给。10月份湖水数值回归后与地下水一致,显示地下水和湖水密切相关,证明秋季湖水由地下水补给。
英文摘要	Under the influence of natural and human factors, the shrinking of Lake area in desert area has become the main factor affecting regional economic development and ecological environment quality. Taking the closed mukainao Lake in Ordos Basin as an example, the stable isotope delta ~(18)O and delta D characteristics of lake water were statistically analyzed by using hydrogen and oxygen stable isotope method and hydrochemical characteristics method, and compared with precipitation and groundwater, the source of lake water supply was revealed, and the causes of Lake shrinkage in desert area were preliminarily identified. The results show that the average delta ~(18)O and deltaD of well water samples near the study area are -8.29 and -62.86, while the average delta ~(18)O and deltaD of shallow groundwater around the Mukainao Lake are -7.2 and -57.46. The isotopic data of Mukainao Lake water show corresponding characteristics due to different sampling periods. so, theMukainao Lake is divided into two groups:the lake water in July and the lake water in October. After heavy rain in July, the average delta ~(18)O and deltaD are -13.84 and -99.61, which are obviously depleted compared with the lake water samples before heavy rain. The evaporation line of Mukainao Lake in October is deltaD=5.1delta ~(18)O-14, which is smaller than the slope of the evaporation line deltaD=4.19delta ~(18)O-8.4 in July. average values of isotopes in shallow groundwater and middle-shallow well water around the Mukainao Lake are similar, the evaporation also exists in shallow groundwater, and the evaporation line is consistent with evaporation of Mukainao Lake. Isotopes of the lake water in summer are far enriched in groundwater and can return to rainwater line. It is speculated that Mukainao Lake water in summer is mainly composed of precipitation. The regression of lMukainao Lake water value in October is consistent with groundwater, which shows the close relationship between groundwater and lake water, Combined with local precipitation data, it can be known that the main recharge of the lake water in autumn is the groundwater.
中文关键词	木凯淖湖 ; 稳定同位素 ; 地下水 ; 降水线 ; 水化学
英文关键词	Mukainao Lake Stable isotope The precipitation line Hydrochemistry
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Geology
CSCD记录号	CSCD:6877121
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353941
作者单位	古丽波斯坦·吐逊江, 新疆地质灾害防治重点实验室;;新疆工程学院, 新疆地质灾害防治重点实验室;;, 乌鲁木齐;;乌鲁木齐, 新疆;;新疆 830023;;830023, 中国. 庞忠和, 中国科学院地质与地球物理研究所, 北京 100029, 中国. 尚彦军, 新疆地质灾害防治重点实验室;;新疆工程学院;;中国科学院地质与地球物理研究所, 新疆地质灾害防治重点实验室;;;;, 乌鲁木齐;;乌鲁木齐;;, 新疆;;新疆;;北京 830023;;830023;;100029, 中国.
推荐引用方式 GB/T 7714	古丽波斯坦·吐逊江,庞忠和,尚彦军. 从同位素和水化学成分对比看沙漠地区湖泊水补给来源以鄂尔多斯盆地木凯淖湖为例[J],2020,38(4):546-551.
APA	古丽波斯坦·吐逊江,庞忠和,&尚彦军.(2020).从同位素和水化学成分对比看沙漠地区湖泊水补给来源以鄂尔多斯盆地木凯淖湖为例.新疆地质,38(4),546-551.
MLA	古丽波斯坦·吐逊江,et al."从同位素和水化学成分对比看沙漠地区湖泊水补给来源以鄂尔多斯盆地木凯淖湖为例".新疆地质 38.4(2020):546-551.