The impacts of climate change on groundwater quality: A review

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 912, P. 169241 - 169241

Published: Dec. 9, 2023

Language: Английский

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Chemical evolution characteristics and influencing factors of groundwater in the saline and fresh water funnel area in Hengshui City, North China

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Jan. 25, 2025

Both over-exploitation and exploitation reduction of groundwater can alter the conditions recharge discharge, thereby impacting overall quality groundwater. This study utilizes hydrogeochemical methods statistical analysis to explore spatial temporal evolution characteristics influencing factors chemistry in saline-freshwater funnel area Hengshui City under reduction. The results showed that: With exception deep freshwater western region, which exhibits a trend water deterioration (Cl− accounted for more than 25%), other areas demonstrates an improving (HCO $$_{3}^{-}$$ 25%). origins hydrochemical components two types are influenced by rock weathering. Only shallow saline eastern region is impacted evaporation. And hydraulic play distinct role controlling different areas. It mainly manifested changing water-rock reaction speed diluting ion concentration area.

Language: Английский

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Groundwater Depletion and Degradation in the North China Plain: Challenges and Mitigation Options

Water, Journal Year: 2024, Volume and Issue: 16(2), P. 354 - 354

Published: Jan. 21, 2024

Groundwater is an important natural resource in the North China Plain (NCP) with high economic benefits and social significance. It fulfills 60% of drinking 70% irrigation water requirements. In this review, information retrieved from high-quality articles published MEDLINE other sources. We saw that groundwater declining faster (>1 m yr−1) polluting NO3− (>30 mg L−1) due to excessive pumping application a nitrogen (N) fertilizer, respectively. The (>600 mm ha−1 for agricultural purposes region higher than recharge amount (<200 yr−1). low result rainfall (<600 yr−1), evapotranspiration (>800 under impact dominant vegetative characteristics winter wheat–summer maize (WW-SM) rotations, covering >80% land. Furthermore, N exceeds crop assimilation capacity (>250 kg leach deep down (>50 ha−1) as well loss atmosphere. Presently, Beijing, Tianjin, Hebei are ecologically most affected areas. suggest fertilizer use intensive cropping systems should be controlled by paying attention groundwater-friendly farming practices. addition, artificial options their safe utilization would explored across replenish aquifers. This literature review contributes valuable insights knowledge bank offers foundation further research policy development.

Language: Английский

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Areal artificial recharge has changed the interactions between surface water and groundwater

Journal of Hydrology, Journal Year: 2024, Volume and Issue: 637, P. 131318 - 131318

Published: May 22, 2024

Language: Английский

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Interaction of climate and vegetation on the spatial distribution of rainfall-induced groundwater recharge in the Central Gangetic Plain

Journal of Hydrology, Journal Year: 2025, Volume and Issue: 653, P. 132758 - 132758

Published: Jan. 31, 2025

Language: Английский

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Future Research Imperatives in Hydrogeology

Springer hydrogeology, Journal Year: 2025, Volume and Issue: unknown, P. 365 - 385

Published: Jan. 1, 2025

Language: Английский

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Carbon Isotopic Signatures of Aquifer Organic Molecules along Anthropogenic Recharge Gradients

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 7, 2025

The property of groundwater dissolved organic matter (DOM) subjected to anthropogenic recharge (AGR) might be affected by the water quality disparity between surface and natural groundwater. However, diverse molecular scenarios DOM under uneven recharging levels remain largely unexplored. We combined characteristics, carbon isotopic signatures molecules, end-member mixing analysis explore sensitivity potential tracking capabilities AGR along with gradients. Our findings suggested that enriched diverse, saturated, labile, sulfur-rich amplifying abundance intensity, which intensified Additionally, S-containing molecules their indicators like CHOS% (with threshold values 7.82%) exhibited high predictive power for recognition. major (diversity, saturated degree, stability) indicated 13C-containing were similar whole pool. Notably, specific (C12H10O5S C15H16O12), although not detected in all samples, exhibit robust stability or favorable solubility, rendering them candidates as AGR-sensitive molecules. R13C/12C ratio C19H24O5 emerged most tracer, exhibiting a strong correlation smallest deviation from theoretical line, signifying its optimal suitability precise source apportionment. This study offers novel insights into impacts contributes fostering harmonious balance human activities resource sustainability.

Language: Английский

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Groundwater Quality Assessment Based on the Random Forest Water Quality Index—Taking Karamay City as an Example

Sustainability, Journal Year: 2023, Volume and Issue: 15(19), P. 14477 - 14477

Published: Oct. 4, 2023

In the past few decades, global industrial development and population growth have led to a scarcity of water resources, making sustainable management groundwater challenge. The Water Quality Index (WQI) serves as comprehensive method for assessing quality can provide valuable recommendations at level, optimizing policies management. However, subjectivity uncertainty traditional WQI negative impacts on evaluation outcomes, particularly in determining indicator weights selecting aggregation functions. proposed index based random forest (RFWQI) model this study addresses these issues. It selects indicators actual pollution situation area, employs an advanced rank indicators, determines using centroid method, scores sub-index function designed development, compares results two commonly used functions identify optimal one. Based aggregated scores, 137 monitoring sites is classified into five levels: “Excellent”, “Good”, “Medium”, “Poor”, or “Unacceptable”. Among 11 (sodium, sulfate, chloride, bicarbonate, total dissolved solids, fluoride, boron, nitrate, pH, CODMn, hardness), chloride was given highest weight (0.236), followed by solids (0.156), sodium lowest (0.008). exhibits good prediction capability before hyperparameter tuning (86% accuracy, RMSE 0.378), after grid search five-fold cross-validation, combination determined, further improving performance (94% F1-Score 0.967, AUC 0.91, 0.232). For newly developed function, interpolation score each indicator, comparing functions, NSF selected most suitable assessment. Overall, area poor (52.5% low quality) not drinking.

Language: Английский

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Multi-objective double layer water optimal allocation and scheduling framework combing the integrated surface water – groundwater model

Water Research, Journal Year: 2024, Volume and Issue: 262, P. 122141 - 122141

Published: July 24, 2024

Language: Английский

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Categories, Distribution, Opportunities, and Challenges of Unconventional Water Resources

Lecture notes in chemistry, Journal Year: 2024, Volume and Issue: unknown, P. 39 - 64

Published: Jan. 1, 2024

Language: Английский

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