| 同位素水化学指示的新疆孔雀河流域地下水与地表水关系 |
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| 引用本文： | 张俊,尹立河,顾小凡,李瑛,杨炳超,姜军,贾伍慧,谢万兵,王拓,唐小平,董佳秋,王倩,常亮.同位素水化学指示的新疆孔雀河流域地下水与地表水关系[J].西北地质,2021(1). |
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| 作者姓名： | 张俊 尹立河 顾小凡 李瑛 杨炳超 姜军 贾伍慧 谢万兵 王拓 唐小平 董佳秋 王倩 常亮 |
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| 作者单位： | 中国地质调查局干旱半干旱区地下水与生态重点实验室;西北地质科技创新中心;中国地质大学（北京）;新疆维吾尔自治区地质矿产勘查开发局第三地质大队;新疆维吾尔自治区地质调查院 |
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| 基金项目： | 国家自然科学基金资助项目“毛乌素沙地土壤水分冻融入渗机理及同位素效应研究”(NO.41402226);陕西省创新能力支撑计划“旱区地下水文过程及表生生态效应重点科技创新团队”(2019TD-040);中国地质调查局地调项目“塔里木盆地开都河-孔雀河流域水文地质调查”(DD20190351)。 |
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| 摘 要： | 地下水是孔雀河流域农业灌溉的主要水源之一,其对本地区经济发展的支撑作用日益增强。为实现孔雀河流域水资源合理开发和生态保护,采用环境同位素和水化学方法,研究了孔雀河流域地下水与地表水关系。结果表明:地下水的主要补给来源为河水。含水层成因类型和现代河道分布共同控制着孔雀河流域地下咸淡水的空间分布格局;氢氧稳定同位素对不同水体的相互转化指示作用较强,但难以区别更新世与全新世的地下水;3 H和14 C放射性同位素组分对地下水循环演化及更新能力的指示作用较好,14 C年龄变化特征可以很好指示承压水的运移方向和速率;13 C可作为初步判断地下水类型或年龄的参考指示剂;大量渠系引水灌溉使得潜水接受地表水入渗补给能力增强,更新能力显著提高,但承压水目前的开采利用仍以消耗更新能力差的老水为主。当地应优化调整地下水开发格局,减少流域中游河套内农灌区承压水开采量,加大流域下游微咸水分布区潜水开采利用,降低潜水位,减轻土壤盐渍化,促进水土资源开发的良性循环。
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| 关 键 词： | 孔雀河流域 地下水循环 水化学 环境同位素 指示作用 |
Study on the Relationship Between Groundwater and Surface Water in Xinjiang Kongque River Basin Using Isotopes and Hydrochemistry method |
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| ZHANG Jun,YIN Lihe,GU Xiaofan,LI Ying,YANG Bingchao,JIANG Jun,JIA Wuhui,XIE Wanbing,WANG Tuo,TANG Xiaoping,DONG Jiaqiu,WANG Qian,CHANG Liang.Study on the Relationship Between Groundwater and Surface Water in Xinjiang Kongque River Basin Using Isotopes and Hydrochemistry method[J].Northwestern Geology,2021(1). |
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| Authors: | ZHANG Jun YIN Lihe GU Xiaofan LI Ying YANG Bingchao JIANG Jun JIA Wuhui XIE Wanbing WANG Tuo TANG Xiaoping DONG Jiaqiu WANG Qian CHANG Liang |
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| Institution: | (Xi'an Center of Geological Survey,China Geological Survey,Xi'an 710054,ShaanXi,China;Key Laboratory for Groundwater and Ecology in Arid and Semi-arid Areas,Xi'an Center of Geological Survey,Chinese Geological Survey,Xi'an 710054,ShaanXi,China;University of Geosciences,Beijing,100083,China;No.3 Geological Party of Xinjiang Geological and Mineral Exploration and Development Bureau,Kuerl 841000,Xinjiang,China;Xinjiang Geological Survey Institute,Urumqi 830000,Xinjiang,China) |
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| Abstract: | Groundwater in the Kongque river basin,as one of the main water sources for agricultural irrigation,plays an increasingly important role in the economic development.In order to realize the rational exploitation of water resources and ecological protection,relationship between groundwater and surface water in the Kongque river basin were studied using environmental isotopes and hydrochemistry method.The results show that the main groundwater recharge is from river water.Both the genetic types of aquifers and the distribution of modern channels have effect on the spatial distribution of groundwater quality.The hydrogen-oxygen stable isotopes are good indicators on the transformation among different water bodies,but it is difficult to distinguish the Pleistocene and Holocene groundwater.The combination of 3 H and 14 C has a good indication on the circulation and renewal ability of groundwater.14 C age variations can well indicate the direction and rate of confined groundwater flow.13 C can be used to preliminarily determine groundwater types or age as a reference indicator.The surface water-fed irrigation have increased the recharge and renewal capacity of the unconfined groundwater,whereas the exploitation and utilization of confined groundwater rely mainly on old groundwater with poor renewal capacity.The extraction of confined groundwater in the agricultural irrigation areas in the middle reaches of Kongque river should be reduced,while in the lower reach of the salty groundwater areas the extraction of unconfined groundwater should be increased in order to lower groundwater level,reduce soil salinization and promote the sustainable use of land and water resources. |
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| Keywords: | Kongque river basin groundwater circulation hydrochemistry environmental isotope indicators |
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