海洋科学2025，Vol.49Issue(11)：64-74,11.DOI:10.11759/hykx20250925002
东营地区地下水的水化学及海水入侵时空分布特征
Hydrochemical and seawater intrusion spatiotemporal dis-tribution characteristics of groundwater in the Dongying area
摘要
Abstract
By integrating mathematical statistics with Piper and Gibbs diagrams,we characterized the hydrochemi-cal 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 in-trusion 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,exter-nal-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.关键词
东营地区/海水入侵/地下水/水化学特征Key words
Dongying area/seawater intrusion/groundwater/hydrochemical characteristics分类
资源环境引用本文复制引用
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):64-74,11.基金项目
东营市自然科学基金项目(2024ZR011) （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) （DYSWSHJK2025022503）
国家自然科学基金(41876078) Dongying Municipal Natural Science Foundation Project,No.2024ZR011 （41876078）
Open Fund Project of Dongying Yellow River Delta Hydroe-cology Key Laboratory,No.DYSWSHJK2025022503 （）
the National Natu-ral Science Foundation of China,No.41876078 （）
