| 微山湖流域高氟地下水的成因分析 |
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| 关键词:Weishan Lake watershed high fluoride groundwater distribution characteristics genesis |
| 基金项目:国家重点研发计划项目(编号: 2017YFC0406106);国家自然科学基金项目(编号: 41502253) |
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| Distribution Characteristics and Genesis of High Fluoride Groundwater in Weishan Lake Watershed |
| Based on the analysis of 475 groundwater inorganic data collected from 2006 to 2016 and the data of soluble salts in sediments, the authors studied in detail the distribution characteristics and enrichment mechanism of high fluoride groundwater in Weishan Lake watershed. The results show that the distribution of high fluoride groundwater in Weishan Lake watershed is obviously characterized by east and west partitioning, and there is a wide range of high fluoride groundwater in the west alluvial and lacustrine plain. In the west alluvial and lacustrine plain, the fluoride concentration in shallow groundwater at the depth of 0–40 m is mainly 1~2 mg/L, only under the impact of the modern Yellow River the fluoride concentration is lower than 1 mg/L, and in the areas of Jinxiang, Shanxian, Jiaxiang, the fluoride concentration is higher than 3 mg/L, with the maximum being 9.5 mg/L; in deep confined groundwater at the depth of 150–400 m, the fluoride concentration is mainly 1~1.5 mg/L, the fluoride whose concentration is higher than 2 mg/L is distributed in the area of Heze–Shanxian stripe, with the maximum concentration being 3.5 mg/L. In the east alluvial and flood plain, the fluoride concentration is lower than 1 mg/L both in the shallow groundwater and deep confined groundwater. The concentration of soluble fluorine in the sediments of the west alluvial and lacustrine plain decreases with the increasing depth. The formation of high fluoride groundwater in the west Weishan Lake watershed is controlled by three factors, i.e., material source, leaching and evaporation concentration. The dissolution equilibrium of calcium fluoride is an important controlling factor responsible for the fluoride content in groundwater. |
| LIU Chun-hua,WANG Wei,WEI Zheng-run,SHANG Hao,ZHANG Zhuo.2018.Distribution Characteristics and Genesis of High Fluoride Groundwater in Weishan Lake Watershed[J].Acta Geoscientica Sinica,39(3):351-357. |
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