Hydrogeochemical fingerprint, driving forces and spatial availability of groundwater in a coastal plain, Southeast China

Hao, Qichen; Li, Yasong; Xiao, Yong; Yang, Hongjie; Zhang, Yuqing; Wang, Liwei; Liu, Kui; Liu, Gongxi; Wang, Jie; Hu, Wenxu; Liu, Wei-Ting

doi:10.1016/j.uclim.2023.101611

Cited by 11 publications

(2 citation statements)

References 57 publications

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“…In recent years, the global temperature change caused by drastic climate change has also directly affected the precipitation recharge and evaporation of surface water [4,[16][17][18]. In addition, in coastal areas, seawater backflow can also alter river hydrochemistry [19].…”

Section: Introductionmentioning

confidence: 99%

Identification of Hydrochemical Characteristics, Spatial Evolution, and Driving Forces of River Water in Jinjiang Watershed, China

Zhu,

Yang,

Xiao

et al. 2023

Water

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Rivers are an important source of water in humid regions, but their availability is greatly limited by water chemistry. In order to accurately identify the changes in river water chemical composition, the compositional analysis method (CoDA) is proposed from the perspective of compositional data analysis theory, which considers the geochemical riverine system as a whole and detects the compositional changes of the entire watershed. The basic data analysis is carried out by traditional analysis methods, and the results show that the hydrochemical characteristics of different sections of the basin have significant features. The water chemistry of Dongxi River is of the HCO3− Ca type. The water of the Xixi River shows a gradual evolution from the HCO3-Ca type and high SO42− content in the upper reaches to the Cl-Ca type in the lower reaches. The hydrochemistry of river water in the watershed is mainly affected by rock weathering leaching (PC1) and agricultural and domestic pollutant discharge (PC2), with a contribution rate of 48.4% and 19.7%, respectively. Rock weathering, mining, and agricultural pollution are the main factors affecting the chemical composition of river water in different regions. The spatial composition of a single sample at different scales is monitored by the Mahalanobis distance approach in an iterative manner to minimize the influence of a single anomaly on the composition center. The results show that the main reasons for the change in river water chemical composition along the Xixi River are attributed to mine pollution, domestic pollution, and tea plantation and that along the Dongxi River is caused by domestic pollution. The hydrochemical composition changes after the confluence of the Xixi River and Dongxi River are mainly affected by human activities and seawater in urban areas. This research could provide new perspectives and methods for detecting the influences of human and natural factors on the hydrochemistry of river water in humid regions worldwide.

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Section: Introductionmentioning

confidence: 99%

Identification of Hydrochemical Characteristics, Spatial Evolution, and Driving Forces of River Water in Jinjiang Watershed, China

Zhu,

Yang,

Xiao

et al. 2023

Water

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“…It provides nearly half of the agricultural irrigation water, and approximately one-third of the global population depends on groundwater as a source of drinking water [3][4][5]. It is even the only source of drinking water in some arid areas [6]. However, in recent decades, with the changes in natural conditions and the intensification of anthropogenic activities, many countries and regions are generally facing environmental problems such as groundwater decline, deterioration of water quality, damage to aquifers, and heavy metal pollution in groundwater [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Hydrochemical Characteristics and Controlling Factors of Shallow and Deep Groundwater in the Heilongdong Spring Basin, Northern China

Gao,

Li,

Qian

et al. 2023

Sustainability

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Heilongdong Spring Basin (HSB) is located in a semi-arid region in northern China. In the past few decades, it has been influenced by anthropogenic activities. Currently, there is a lack of information about the impact on the hydrogeochemistry and groundwater quality of different aquifers. To address this concern, the present study used conventional hydrochemical diagrams, stable isotope analysis and multivariate statistical techniques to analyze hydrochemical characteristics and controlling factors of shallow and deep groundwater in the study area. The results showed that all groundwater samples were weakly alkaline. The shallow groundwater (SGW) was mainly composed of SO4-Ca and SO4·HCO3-Ca·Mg water types with high TDS values. However, the predominant water types of deep groundwater (DGW) were HCO3-Ca·Mg and HCO3·SO4-Ca·Mg types with relatively low TDS. The large majority of shallow groundwater had poor water quality, which was influenced by natural factors and anthropogenic activities, characterized by high concentrations of SO42−, NO3−, and Cl−. In contrast, the overall water quality of deep groundwater was good, mainly controlled by the natural background. Nonetheless, a few karst groundwater samples of DGW in runoff areas exhibited close hydraulic connections with SGW samples and presented contamination to a certain degree. Our research results provide a scientific basis for the utilization and protection of groundwater in different aquifers in northern China.

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Hydrochemical assessment of groundwater utilizing statistical analysis, integrated geochemical methods, and EWQI: a case study of Laiwu region, North China

Zhang,

Gao,

et al. 2024

Environ Monit Assess

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Hydrogeochemical fingerprint, driving forces and spatial availability of groundwater in a coastal plain, Southeast China

Cited by 11 publications

References 57 publications

Identification of Hydrochemical Characteristics, Spatial Evolution, and Driving Forces of River Water in Jinjiang Watershed, China

Identification of Hydrochemical Characteristics, Spatial Evolution, and Driving Forces of River Water in Jinjiang Watershed, China

Hydrochemical Characteristics and Controlling Factors of Shallow and Deep Groundwater in the Heilongdong Spring Basin, Northern China

Hydrochemical assessment of groundwater utilizing statistical analysis, integrated geochemical methods, and EWQI: a case study of Laiwu region, North China

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