| 京津冀水源涵养区水化学环境分析——以承德市兴隆县为例 |
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| 引用本文： | 鲁重生,刘文波,李志明,武雄,康伟,任玉祥.京津冀水源涵养区水化学环境分析——以承德市兴隆县为例[J].水文地质工程地质,2020,47(6):132-141. |
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| 作者姓名： | 鲁重生 刘文波 李志明 武雄 康伟 任玉祥 |
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| 作者单位： | 1. 中国地质大学(北京)水资源与环境学院, 北京 100083; |
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| 基金项目： | 中国地质调查局地质调查项目（DD20190311） |
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| 摘 要： | 水环境及其水质特征是水源涵养的主控因素。选取承德南部京津冀水源主要发源地——兴隆县为典型研究区，利用2019年实地采集的79组水样（井水占31.6%，泉水占58.3%，地表水占7.6%，尾矿水占2.5%）测试结果，采用统计分析、GIS空间分析及水文地球化学图解法，综合分析了区内水化学空间分布特征、主要组分的物源及成生条件等，旨在结合岩性从水化学角度分析水源涵养状况。研究结果表明:研究区的水化学类型以HCO3—Ca·Mg型为主（占62%），主要受碳酸盐岩展布控制；地下水水化学组分主要来源于大气降水淋滤过程中水岩相互作用的产物；区域水质涵养条件总体优良，但有3组SO42-（占3.80%）、2组NO3-（占2.53%）超限，与局部矿业活动和人为活动有关；研究区水样TDS总体较低，变质岩及侵入岩分布区富集Sr、Se等有益元素，形成京津冀水源涵养的优势条件。
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| 关 键 词： | 水环境 水化学 水源涵养 水岩作用 兴隆县 |
| 收稿时间： | 2020-05-12 |
Hydrochemical environment in a typical conservation area in the Beijing-Tianjin-Hebei region: A case study in Xinglong County of Chengde |
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| Institution: | 1. School of Water Resources and Environment, China University of Geosciences(Beijing), Beijing 100083, China;2. China Institute of Geo-environment Monitoring, Beijing 100081, China;3. Chengde natural resources and Planning Bureau, Chengde, Hebei 067000, China |
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| Abstract: | Characteristics of water environment and quality are the main controlling factors of water conservation and are of important significance in the rational utilization of regional water resources and ecologically sustainable development. To promote the overall utilization and protection of water resources in the Chengde are and its downstream area, the Xinglong county, a major source of water resources in the south of Chengde, is selected as a typical research area in this paper. Statistical analysis and GIS spatial analysis were used to adopt the 79 water samples collected in 2019, and hydrogeochemical graphic method was employed to comprehensively understand the spatial distribution characteristics of water chemistry, the provenance basis of major components, and the formation conditions and water conservation conditions. The research results indicate that the hydrochemical type in the study area is mainly of HCO3-Ca·Mg type (62%) and is controlled by the widespread distribution of dolomite carbonate. The groundwater is generally in an oxidizing environment with good connectivity to the atmosphere, and hydrochemical compositions mainly come from the water-rock interactions in the process of leaching of atmospheric precipitation. The regional water quality conservation conditions are generally excellent. However, there are 3 groups of samples (SO42- concentrations higher than the national standard, accounting for 3.80%) and 2 groups of samples (NO3- concentrations higher than the national standard, accounting for 2.53%) in the main ionic components, which are related to local mining activities and human activities and should be paid attention to. The TDS in the water in the area is low, and the beneficial elements such as Sr and Se are rich in the distribution areas of metamorphic rocks and intrusive rocks, forming advantageous conditions for water conservation in the Beijing-Tianjin-Hebei region. |
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