| 引用本文: | 张焱,张鹏,王路路,袁鹏杰,张瑾宸,张乃鹏,谭丽菊,孙超.东营地区地下水的水化学及海水入侵时空分布特征[J].海洋科学,2025,49(11):64-74. |
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| 东营地区地下水的水化学及海水入侵时空分布特征 |
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张焱1,2, 张鹏1,2, 王路路1,2, 袁鹏杰1,2, 张瑾宸1,2, 张乃鹏1,2, 谭丽菊3, 孙超1,2
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1.东营市水文中心, 山东 东营 257100;2.东营市黄河三角洲水文生态重点实验, 山东 东营 257100;3.中国海洋大学 化学化工学院, 山东 青岛 266100
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| 摘要: |
| 运用数理统计、piper、Gibbs图解等方法分析了山东省东营地区2017—2024年地下水的水化学特征,并运用单因子指标法评价了该地区的海水入侵时空格局及影响因素。结果表明,研究区域内地下水呈现弱碱性和高矿化度,Na+和Cl-是地下水的主要离子,水化学类型以Cl—Na型和HCO3—Na型为主。73%的监测站位受海水入侵影响,其中59%属严重入侵,入侵高值区集中于西北部、中部和东部沿黄地带,西南部广饶地区无入侵。自2017以来,除咸淡水界面站位出现咸淡水转化外,大部分监测站位的入侵程度总体未显著缓解。离子比值与Gibbs模型显示,咸化受控于地质构造、古海水滞留、强烈蒸发、客水稀释及地下水超采等多因素耦合。研究可为黄河三角洲咸水入侵预警与地下水资源可持续管理提供关键依据。 |
| 关键词: 东营地区 海水入侵 地下水 水化学特征 |
| DOI：10.11759/hykx20250925002 |
| 分类号:X523 |
| 基金项目:东营市自然科学基金项目(2024ZR011);东营市黄河三角洲水文生态重点实验室开放基金项目(DYSWSHJK2025022503);国家自然科学基金(41876078) |
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| Hydrochemical and seawater intrusion spatiotemporal distribution characteristics of groundwater in the Dongying area |
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ZHANG Yan1,2, ZHANG Peng1,2, WANG Lulu1,2, YUAN Pengjie1,2, ZHANG Jinchen1,2, ZHANG Naipeng1,2, TAN Liju3, SUN Chao1,2
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1.Dongying Hydrological Center, Dongying 257100, China;2.Dongying Municipal Key Laboratory of Hydrology and Ecology in the Yellow River Delta, Dongying 257000, China;3.College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
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| Abstract: |
| By integrating mathematical statistics with Piper and Gibbs diagrams, we characterized the hydrochemical evolution of groundwater in Dongying, Shandong, from 2017 to 2024 and employed a single-factor index to delineate the spatiotemporal patterns and driving factors of seawater intrusion. The results show that the aquifer is weakly alkaline and highly mineralized, dominated by Na⁺ and Cl⁻, with Cl–Na and HCO₃–Na as the prevailing water types. Seawater intrusion is indicated in 73% of the monitoring wells, including 59% with severe intrusion, primarily concentrated in northwest and central Dongying and along the Yellow River corridors. No intrusion is detected in the southwestern Guangrao District. Since 2017, except for transient fresh–saline alternations at the intrusion interface, most sites do not show notable abatement. Ion ratios and Gibbs modeling reveal that salinization results from the coupled effects of geological structure, paleo-seawater entrapment, intense evaporation, external-water dilution, and groundwater overexploitation. These findings provide a scientific basis for early warning of saline intrusion and sustainable groundwater management in the Yellow River Delta. |
| Key words: Dongying area seawater intrusion groundwater hydrochemical characteristics |
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