ArticleScientific reports2025
Groundwater nitrate response to hydrogeological conditions and socioeconomic load in an agriculture dominated area.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
3 citing papers in PubMed.
- Groundwater compliant with drinking water standards poses a "silent risk" of cumulative health hazards.Environmental geochemistry and health · 2026Article
- Hydrogeochemical Formation Mechanisms and Water Supply Suitability of Groundwater in the Northern Grassland Region on Inner Mongolia Plateau, China.Water environment research : a research publication of the Water Environment Federation · 2026Article
- Evaluation of groundwater quality in the bouanane plain using the groundwater pollution index, nitrate pollution index, and microbiological indicators.Scientific reports · 2026Article
Corrections and comments
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Authors and funding
2 authors.
Funding
Abstract
Nitrate pollution is widespread environmental concern in most shallow groundwater systems. This study conducts a comprehensive investigation of shallow groundwater, deep groundwater, and surface water in a region of the Chinese Loess Plateau. Nitrate pollution in this area is severe with more than half of the shallow groundwater samples exceeding the limit of nitrate for drinking water (50 mg/L). Temporal variation of nitrate reveals a continued increase of nitrate in shallow groundwater, although the fertilizer use has been reduced, recently. Spatially, deep groundwater nitrate is much lower than that in shallow groundwater, supporting the anthropogenic origin of nitrate from surface. The intrinsic vulnerability index indicates less susceptibility of loess aquifer to pollution in comparison to alluvial aquifer. However, high levels of nitrate are observed in both alluvial and loess aquifers. The pollution risk assessment combined with anthropogenic loads explains the occurrence of nitrate more precisely. Agricultural inputs and release of sewage-effluents are the major contributions of nitrate from hydrogeochemical evidence. The high nitrate in loess aquifer, which is supposed to be less susceptible to contamination, indicates anthropogenic loads to be a non-negligible factor. Control of nitrate pollution in loess area is long-standing issue and will require sustained monitoring.
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Registered trials
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