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New insights into nitrate sources and transformations in riparian groundwater of a sluice-controlled river: An integrated approach using major ions, stable isotopes and microbial gene methods

文献类型：期刊论文

作者Li, Baoling4,5,6; Han, Dongmei2,5; Yang, Lihu1,2,5; Song, Xianfang1,2,5; Qin, Mingzhou6; Diamantopoulos, Efstathios3,4
刊名ENVIRONMENTAL RESEARCH
出版日期2025-04-15
卷号271页码:121065
关键词Riparian groundwater Microbial functional gene Nitrogen isotopes MixSIAR model Shaying river
ISSN号0013-9351
DOI10.1016/j.envres.2025.121065
产权排序2
文献子类Article
英文摘要Nitrate pollution in water environment is a serious problem worldwide. Identifying nitrate sources and transformations in the riparian aquifer is critical for effectively controlling and mitigating nitrate contamination, especially in sluice-controlled rivers. This study employs an integrated approach combining hydrochemical analysis, isotopes (518O-H2O, 52H-H2O, 515N-NO3- and 518O-NO3- ), quantification of nitrogen (N) functional genes and a Bayesian mixing model (MixSIAR) to comprehensively investigates nitrate sources and transformation processes in the riparian groundwater of a sluice-controlled Shaying River, China. Results revealed severe nitrate contamination in both the river (mean: 2.33-5.25 mg/L) and the riparian groundwater (mean: 0.42-24.46 mg/ L). Manure and sewage were the primary sources (66.20-91.20 %) of nitrate contamination in both river and riparian groundwater. Key processes influencing nitrate dynamics in riparian groundwater included mixing with river water, external N supply, and transformation processes such as nitrification, vegetation uptake and anammox. We found that when sluices are closed, the nitrate concentration in riparian groundwater decreases. In contrast, during the flood season with sluices open, the nitrate concentration in the river water increases. This study also developed the first conceptual model illustrating the impact of sluice regulation on riparian nitrate dynamics, highlighting the complex interplay between sluice operations, hydrological conditions, and biogeochemical processes that govern nitrate behavior. These findings provide valuable insights into nitrate dynamics in riparian aquifers of sluice-controlled rivers, offering a robust scientific foundation for targeted nutrient management strategies in the Shaying River Basin and similar regulated environments globally.
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WOS关键词DUAL-ISOTOPE ; SOURCE APPORTIONMENT ; UNCERTAINTY ANALYSIS ; NITROGEN POLLUTION ; ANAEROBIC AMMONIUM ; BANK INFILTRATION ; SHAYING RIVER ; MIXING MODEL ; WATER ; DENITRIFICATION
WOS研究方向Environmental Sciences & Ecology ; Public, Environmental & Occupational Health
语种英语
WOS记录号WOS:001428576400001
出版者ACADEMIC PRESS INC ELSEVIER SCIENCE
源URL[http://ir.igsnrr.ac.cn/handle/311030/213231]  
专题陆地水循环及地表过程院重点实验室_外文论文
通讯作者Yang, Lihu; Song, Xianfang
作者单位1.China Geol Soc, Tech Innovat Base Nat Resources Monitoring Lower R, Langfang 065000, Peoples R China
2.Univ Chinese Acad Sci, Sino Danish Coll, Beijing 100049, Peoples R China;
3.Univ Bayreuth, Chair Soil Phys, D-95447 Bayreuth, Germany;
4.Univ Copenhagen, Dept Plant & Environm Sci, DK-1871 Copenhagen, Denmark;
5.Chinese Acad Sci, Key Lab Water Cycle & Related Land Surface Proc, Inst Geog Sci & Nat Resources Res, 11A Datun Rd, Beijing 100101, Peoples R China;
6.Henan Univ, Coll Geog Sci, Fac Geog Sci & Engn, Zhengzhou 450046, Peoples R China;
推荐引用方式
GB/T 7714		 Li, Baoling,Han, Dongmei,Yang, Lihu,et al. New insights into nitrate sources and transformations in riparian groundwater of a sluice-controlled river: An integrated approach using major ions, stable isotopes and microbial gene methods[J]. ENVIRONMENTAL RESEARCH,2025,271:121065.
APA Li, Baoling,Han, Dongmei,Yang, Lihu,Song, Xianfang,Qin, Mingzhou,&Diamantopoulos, Efstathios.(2025).New insights into nitrate sources and transformations in riparian groundwater of a sluice-controlled river: An integrated approach using major ions, stable isotopes and microbial gene methods.ENVIRONMENTAL RESEARCH,271,121065.
MLA Li, Baoling,et al."New insights into nitrate sources and transformations in riparian groundwater of a sluice-controlled river: An integrated approach using major ions, stable isotopes and microbial gene methods".ENVIRONMENTAL RESEARCH 271(2025):121065.

入库方式： OAI收割

来源：地理科学与资源研究所

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