Sources and Transformation of Nitrate in Shallow Groundwater in the Three Gorges Reservoir Area: Hydrogeochemistry and Isotopes DOI Open Access
Xing Wei, Yulin Zhou,

Libo Ran

et al.

Water, Journal Year: 2024, Volume and Issue: 16(22), P. 3299 - 3299

Published: Nov. 17, 2024

Nitrate is among the most widely occurring contaminants in groundwater on a global scale, posing serious threat to drinking water supplies. With advancement of urbanization and mountainous agriculture, nitrate Wanzhou District Three Gorges Reservoir Area has formed complex combination pollution sources. To more accurately identify sources groundwater, this study integrates hydrochemical methods environmental isotope techniques analyze transformation processes shallow under different land-use types. Furthermore, Bayesian mixing model (MixSAIR) employed calculate contribution rates various The results indicate that primary form inorganic nitrogen within area, with concentrations cultivated generally higher than those construction land forest land. process predominantly nitrification, little no denitrification observed. In mainly originates from chemical fertilizers (36.3%), sewage manure (35.4%), soil organic (24.7%); forested areas, primarily comes atmospheric precipitation (35.3%), (31.3%), (22.1%); while constructed derives (46.0%) (32.2%). These establish scientific foundation for formulating control management strategies region serve as reference identifying regions comparable hydrogeological features profiles.

Language: Английский

Seasonal nitrate input drives the spatiotemporal variability of regional surface water-groundwater interactions, nitrate sources and transformations DOI
Yali Wu, Jun Wang, Z. A. Liu

et al.

Journal of Hydrology, Journal Year: 2025, Volume and Issue: unknown, P. 132973 - 132973

Published: Feb. 1, 2025

Language: Английский

Citations

2
Source Apportionment of Groundwater Nitrate Pollution in Irrigation Districts along the Jing River, Guanzhong Basin: Insights from Hydrochemistry, Isotopes, and the MixSIAR Model DOI
Jing Ning, Peiyue Li, Jianhua Wu

et al.

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 116231 - 116231

Published: March 1, 2025

Language: Английский

Citations

1
Megacity river as a critical anthropogenic source of strontium release in global Sr cycle: Insights from Bayesian mixing model and Sr isotope DOI
Shitong Zhang, Guilin Han,

Xi Gao

et al.

Water Research, Journal Year: 2025, Volume and Issue: 278, P. 123402 - 123402

Published: Feb. 28, 2025

Language: Английский

Citations

0
Quantitative identification, uncertainty and sensitivity analysis of nitrate sources using stable isotopes in a drinking water source watershed of Eastern China DOI
Lu Zhang, Jiangbo Han,

Jin Lin

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 11, 2024

Abstract The quantitative identification of nitrate sources is great significance for water resources management. Stable isotopes combined with Bayesian isotope mixing model (SIAR) were widely used to identify nitrogen sources. However, few researchers focus on the influence variations source isotopic composition contributions. Here, δ15N-NO3− and δ18O-NO3− isotopes, SIAR model, uncertainty sensitivity analysis quantify contributions uncertainties in Huashan watershed. 60 surface samples 82 groundwater collected from November 2021 October 2022, atmospheric deposition (AD), chemical fertilizer (NF), soil (SN), manure sewage (M&S) determined as potential Source by indicated that M&S was main contributor water, while NF groundwater. In April contributed most mainly originated SN MS. variation between winter spring due fertilization rainfall. showed greatest NF. Sensitivity changes had effect results δ15N, whereas only mean values oxygen AD a greater δ18O. Fertilizer application fertility agricultural rotations cropping practices are intrinsic high level SN. magnitude end-member standard deviations directly affects outcomes analysis. We recommend prioritizing determination feature sensitive end-members during sampling. contribution highlighting need optimize irrigation strategies enhance utilization efficiency.

Language: Английский

Citations

0
Investigation of Groundwater Recharge Mechanisms in the Transboundary Komadugu–Yobe Basin Nigeria Using Environmental Stable Isotopes of Δ18o and Δ2h and Comparison with the Wider Sahel, Africa DOI
Abdulrahman Shuaibu, Robert M. Kalin, Vernon R. Phoenix

et al.

Published: Jan. 1, 2024

Language: Английский

Citations

0
Unravelling integrated groundwater management in pollution-prone agricultural cities: a synergistic approach combining probabilistic risk, source apportionment and artificial intelligence DOI
Xiao Yang,

Jiayi Du,

Chao Jia

et al.

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 481, P. 136514 - 136514

Published: Nov. 15, 2024

Language: Английский

Citations

0
Sources and Transformation of Nitrate in Shallow Groundwater in the Three Gorges Reservoir Area: Hydrogeochemistry and Isotopes DOI Open Access
Xing Wei, Yulin Zhou,

Libo Ran

et al.

Water, Journal Year: 2024, Volume and Issue: 16(22), P. 3299 - 3299

Published: Nov. 17, 2024

Nitrate is among the most widely occurring contaminants in groundwater on a global scale, posing serious threat to drinking water supplies. With advancement of urbanization and mountainous agriculture, nitrate Wanzhou District Three Gorges Reservoir Area has formed complex combination pollution sources. To more accurately identify sources groundwater, this study integrates hydrochemical methods environmental isotope techniques analyze transformation processes shallow under different land-use types. Furthermore, Bayesian mixing model (MixSAIR) employed calculate contribution rates various The results indicate that primary form inorganic nitrogen within area, with concentrations cultivated generally higher than those construction land forest land. process predominantly nitrification, little no denitrification observed. In mainly originates from chemical fertilizers (36.3%), sewage manure (35.4%), soil organic (24.7%); forested areas, primarily comes atmospheric precipitation (35.3%), (31.3%), (22.1%); while constructed derives (46.0%) (32.2%). These establish scientific foundation for formulating control management strategies region serve as reference identifying regions comparable hydrogeological features profiles.

Language: Английский

Citations

0