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| 岩溶易旱区地下水水文地球化学特征及其控制因素——以兴仁县为例 |
| Hydrogeochemical Characteristics of Groundwater of Arid Zone of Karst Region and Its Controlling Factors:Case for Xinren County |
| 投稿时间：2016-03-20 修订日期：2016-05-11 |
| DOI：10.14050/j.cnki.1672-9250.2016.06.005 |
| 中文关键词: 岩溶地下水;干旱区;水文地球化学;人为活动;兴仁县 |
| 英文关键词: karst groundwater;arid zone;hydrogeochemical;human activity;Xingren County |
| 基金项目:贵州省科学技术基金项目（黔科合JZ字[2014]2006号、黔科合计Z字[2012]4012号、黔科合基础[2016]1406）；贵州大学人才引进项目（贵大人基合字（2010）046号）；贵州大学创新基金项目（研理工2016038） |
| 作者 | 单位 | E-mail | | 雷琨1, 何守阳1,2,5, 刘玺1, 安艳玲1,2 | 1. 贵州大学 喀斯特环境与地质灾害防治重点实验室, 贵阳 550025
2. 贵州大学 资源与环境工程学院, 贵阳 550025 | syhe@gzu.edu.cn |
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| 中文摘要: |
| 地下水是岩溶易旱区极其重要的水资源,是当地生态环境和人类生存的基本保障。通过收集整理岩溶易旱区兴仁县地下水水化学数据,分析与研究,发现岩溶易旱区地下水的溶解组分主要来源于碳酸盐岩的溶蚀,水化学类型主要为HCO3-Ca 型和HCO3-Ca·Mg型,部分地区由于受到岩层中石膏夹层溶解的影响,水化学类型为HCO3·SO4-Ca·Mg型。地下水中Ca2+、Mg2+、HCO3-等离子受流经区域地层岩性和水-岩相互作用的影响,表现出显著的区域性特征,属自然来源; K+、Na+、Cl-、NO3-等指标与人类活动关系密切,SO42-受水-岩相互作用和人类活动共同影响。岩溶易旱区地下水水文地球化学容易受到人为活动的干扰且日趋明显,降低人为活动对岩溶地下水的影响是确保岩溶易旱区地下水环境及饮水安全的关键。 |
| 英文摘要: |
| Groundwater is an extremely important resource and basic material for human life and natural ecosystems in arid zone of karst areas. Data for groundwater chemistry of Xingren County, Guizhou Province, China were collected to illustrate the characteristics of chemical components, spatial variations and controlling factors. Three chemical types of groundwater were recognized; Ca2+, Mg2+ and HCO3- are mainly derived from the dissolution of carbonate rocks and characterized by HCO3-Ca type and HCO3-Ca·Mg type; the SO42- are predominated by both dissolution of sulfate evaporates(e.g.gypsum) in karst aquifer and anthropogenic in origin and characterized by HCO3·SO4-Ca·Mg type; the K+, Na+, Cl- and NO3- are principally allochthonous origin. The hydrogeochemical characteristics of groundwater in arid zone of karstic areas are increasingly impacted by human activities. Decreasing human activities impacts on karstic groundwater is a key to protect drink water and groundwater environment. |
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