| 黑河流域中游盆地地下水补给机理分析 |
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| 引用本文： | 张应华,仵彦卿.黑河流域中游盆地地下水补给机理分析[J].中国沙漠,2009,29(2):370-375. |
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| 作者姓名： | 张应华 仵彦卿 |
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| 作者单位： | 1. 中国科学院地理科学与资源研究所,陆地水循环及地表过程重点实验室,北京,100101
2. 上海交通大学环境科学与工程学院,上海,200240 |
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| 基金项目： | 国家重点基础研究发展规划(973计划)，知识创新工程领域前沿项目 |
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| 摘 要： | 分析地下水水循环机理是有效评价地下水资源量和合理开发利用地下水资源的前提。对此,利用皮帕尔（Piper）图解法分析地下水的水化学特征类型,结合区域构造水文地质和环境同位素,分析黑河中游盆地内不同地区的地下水补给机理。结果表明,位于黑河较上游地区两个相邻山前冲洪积扇之间的地下水水力联系微弱,分别来自于不同的补给来源;不同区域的黑河沿岸地区,受地理地形控制,地下水补给来源存在显著差异;以榆木山隆起相隔离的张掖盆地和酒泉盆地,地下水水化学特征和同位素存在显著差异,处于不同的地下水补给单元;利用放射性同位素氚含量,初步估算出不同地区地下水的更新期,其地下水年龄均低于32 a。为合理开发利用黑河中游地下水资源、保护脆弱的生态环境提供科学依据。
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| 关 键 词： | 黑河 水化学 同位素 地下水 |
| 收稿时间： | 2007-11-27 |
| 修稿时间： | 2008-2-28 |
Analysis of Groundwater Replenishment in the Middle Reaches of Heihe River |
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| ZHANG Ying-hua,WU Yan-qing.Analysis of Groundwater Replenishment in the Middle Reaches of Heihe River[J].Journal of Desert Research,2009,29(2):370-375. |
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| Authors: | ZHANG Ying-hua WU Yan-qing |
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| Institution: | 1.Key Laboratory of Water Cycle &; Related Land Surface Processes, Institute of Geographic Sciences &; Natural Resources Research, CAS, Beijing 100101, China; 2.School of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China |
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| Abstract: | Heihe River, as one of the greatest inland rivers in China, was confronted with water resources' shortage due to unreasonable development or utilization. To utilize optimally and effectively the limited groundwater resource, isotope technique was widely used to study groundwater cycle. Water samples were collected from wells for chemical and isotopic measurement all over the middle reaches of Heihe River. Piper diagram gives two main types of hydrochemical features. On the background of regional geology, combining isotope δ18O and Tritium with groundwater chemical analysis, different kinds of groundwater source and how to replenish groundwater were discovered. In the upper two adjoining alluvial-proluvial fans of the study area, there has no groundwater interflow; the groundwater is replenished from different sources. Groundwater near Heihe River riverside comes from river seepage flow by the highly conductive channel or from upper groundwater with the control of geography and topography. Zhangye basin and Jiuquan basin were separated by uplift bedrock of Yumu hill, so they have different groundwater replenishment systems, also different groundwater hydrochemistry and isotope characters. The groundwater's ages were approximately estimated by radioactive isotope tritium analysis, being all younger than 32 years. The research results can provide scientific bases for rationally exploiting and effectively using the groundwater resources in the middle reaches of Heihe River basin, so as to protect the fragile eco-environment. |
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| Keywords: | Heihe River groundwater hydrochemistry isotope |
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