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中国贾鲁河生态补水后地下水化学演化及成因分析

Analysis of the evolution and causes of groundwater chemistry after ecological water replenishment of the Jialu River, China.

作者信息

Qu Jihong, Lin Jixian, Wang Jihua, Yan Tiangang, Ren Kun, Zhou Juan, Li Yanbin

机构信息

North China University of Water Resources and Electric Power, Zhengzhou, 450046, China.

Collaborative Innovation Center for Efficient Utilization of Water Resources, Zhengzhou, 450046, China.

出版信息

Sci Rep. 2024 Aug 13;14(1):18759. doi: 10.1038/s41598-024-69704-w.

DOI:10.1038/s41598-024-69704-w
PMID:39138260
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11322388/
Abstract

Ecological water replenishment is an important measure for conserving water sources and improving the water environment. To explore the evolution and causes of groundwater chemistry after ecological water replenishment in the Jialu River, this study utilized groundwater monitoring data from 2015 to 2019 following ecological water replenishment. Various methods, including Piper's trilinear diagram, Gibbs diagram, principal component analysis, and ion ratio analysis, were employed for research purposes. The results indicate that (1) since the implementation of ecological water replenishment in the Jialu River, there has been a general downwards trend in total dissolved solids (TDS) in groundwater. The dominant cation in groundwater is Ca, whereas HCO is the dominant anion. The concentration of cations in groundwater has generally decreased, with noticeable reductions in SO and Cl concentrations in the upper reaches of the recharge river contributing to improved groundwater quality. (2) A comparison with 2015 reveals a gradual transition at sampling points from chemical types such as HCO-Ca·Mg and HCO·Cl-Ca·Mg to an ecological water replenishment chemical type (HCO-Ca).

摘要

生态补水是保护水源和改善水环境的一项重要措施。为探究贾鲁河生态补水后地下水化学特征的演变及成因，本研究利用了2015年至2019年生态补水后的地下水监测数据。采用了多种方法进行研究，包括派珀三线图、吉布斯图、主成分分析和离子比值分析。结果表明：（1）自贾鲁河实施生态补水以来，地下水中总溶解固体（TDS）总体呈下降趋势。地下水中的主要阳离子为Ca，主要阴离子为HCO。地下水中阳离子浓度总体下降，补给河上游SO和Cl浓度显著降低，有助于改善地下水水质。（2）与2015年相比，采样点的化学类型从HCO-Ca·Mg和HCO·Cl-Ca·Mg等逐渐过渡到生态补水化学类型（HCO-Ca）。

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