{"title":"黄河下游水沙对养分动态的影响。","authors":"Yimei Ying, Xu Wang, Meng Shang, Xinrui Cui, Ruijie Huang, Caili Su, Bing Han, Qian Huang","doi":"10.1007/s10653-025-02768-3","DOIUrl":null,"url":null,"abstract":"<p><p>The Water-Sediment Regulation Scheme (WSRS) artificially controls water and sediment processes in the lower Yellow River (LYR), while altering the longitudinal distribution of nutrients along the river. Affected by the confluence of tributaries and other complex factors, the spatial and temporal distribution patterns of nutrients during the water and sediment regulation (WSR) period are extremely complex. From June to August 2023, twelve sampling stations were established along the Yellow River, spanning from Xiaolangdi (XLD) to the Yellow River Estuary (YRE). Nitrogen (N) and phosphorus (P) were measured at these sites during three stages: the water regulation stage, the sediment regulation stage and the after-WSRS stage. This river segment is high nitrogen and low phosphorus, with nitrate nitrogen (NO<sub>3</sub><sup>-</sup>-N) and dissolved inorganic phosphorus (DIP) being the dominant forms. The Yiluo, Qin and Dawen rivers, as crucial tributaries, play a major role in regulating nutrient levels in the LYR as both sources and sinks. The result of PCA identified that PC1 (34.5%) correlated positively with flow, SSC, N, and P, and negatively with temperature and pH. PC2 (15.5%) linked to D<sub>50</sub>, SSA, and EC. During the WSR stage, dissolved nitrogen and phosphorus fluxes of the Yellow River Estuary accounted for 15.21% and 17.33% of their respective annual totals in 2023. The DIN/DIP ratio indicated that the lower Yellow River exhibited a phosphorus-limited potential eutrophic state, and the concentrations of ammonia nitrogen (NH<sub>4</sub>⁺-N) and total phosphorus (TP) have not consistently met the Class II standard of Environmental Quality Standards for Surface Water of China (GB3838-2002). Therefore, monitoring phosphorus pollutant inputs during the water-sediment regulation stage is of particular importance to river basin management agencies. This study enhances our understanding of nutrient transport during WSRS and offers a fresh perspective on nutrient delivery regulation in the LYR.</p>","PeriodicalId":11759,"journal":{"name":"Environmental Geochemistry and Health","volume":"47 10","pages":"455"},"PeriodicalIF":3.8000,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Impacts of water-sediment on nutrient dynamics in the lower yellow river.\",\"authors\":\"Yimei Ying, Xu Wang, Meng Shang, Xinrui Cui, Ruijie Huang, Caili Su, Bing Han, Qian Huang\",\"doi\":\"10.1007/s10653-025-02768-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>The Water-Sediment Regulation Scheme (WSRS) artificially controls water and sediment processes in the lower Yellow River (LYR), while altering the longitudinal distribution of nutrients along the river. Affected by the confluence of tributaries and other complex factors, the spatial and temporal distribution patterns of nutrients during the water and sediment regulation (WSR) period are extremely complex. From June to August 2023, twelve sampling stations were established along the Yellow River, spanning from Xiaolangdi (XLD) to the Yellow River Estuary (YRE). Nitrogen (N) and phosphorus (P) were measured at these sites during three stages: the water regulation stage, the sediment regulation stage and the after-WSRS stage. This river segment is high nitrogen and low phosphorus, with nitrate nitrogen (NO<sub>3</sub><sup>-</sup>-N) and dissolved inorganic phosphorus (DIP) being the dominant forms. The Yiluo, Qin and Dawen rivers, as crucial tributaries, play a major role in regulating nutrient levels in the LYR as both sources and sinks. The result of PCA identified that PC1 (34.5%) correlated positively with flow, SSC, N, and P, and negatively with temperature and pH. PC2 (15.5%) linked to D<sub>50</sub>, SSA, and EC. During the WSR stage, dissolved nitrogen and phosphorus fluxes of the Yellow River Estuary accounted for 15.21% and 17.33% of their respective annual totals in 2023. The DIN/DIP ratio indicated that the lower Yellow River exhibited a phosphorus-limited potential eutrophic state, and the concentrations of ammonia nitrogen (NH<sub>4</sub>⁺-N) and total phosphorus (TP) have not consistently met the Class II standard of Environmental Quality Standards for Surface Water of China (GB3838-2002). Therefore, monitoring phosphorus pollutant inputs during the water-sediment regulation stage is of particular importance to river basin management agencies. This study enhances our understanding of nutrient transport during WSRS and offers a fresh perspective on nutrient delivery regulation in the LYR.</p>\",\"PeriodicalId\":11759,\"journal\":{\"name\":\"Environmental Geochemistry and Health\",\"volume\":\"47 10\",\"pages\":\"455\"},\"PeriodicalIF\":3.8000,\"publicationDate\":\"2025-09-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Environmental Geochemistry and Health\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://doi.org/10.1007/s10653-025-02768-3\",\"RegionNum\":3,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, ENVIRONMENTAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental Geochemistry and Health","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1007/s10653-025-02768-3","RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}
Impacts of water-sediment on nutrient dynamics in the lower yellow river.
The Water-Sediment Regulation Scheme (WSRS) artificially controls water and sediment processes in the lower Yellow River (LYR), while altering the longitudinal distribution of nutrients along the river. Affected by the confluence of tributaries and other complex factors, the spatial and temporal distribution patterns of nutrients during the water and sediment regulation (WSR) period are extremely complex. From June to August 2023, twelve sampling stations were established along the Yellow River, spanning from Xiaolangdi (XLD) to the Yellow River Estuary (YRE). Nitrogen (N) and phosphorus (P) were measured at these sites during three stages: the water regulation stage, the sediment regulation stage and the after-WSRS stage. This river segment is high nitrogen and low phosphorus, with nitrate nitrogen (NO3--N) and dissolved inorganic phosphorus (DIP) being the dominant forms. The Yiluo, Qin and Dawen rivers, as crucial tributaries, play a major role in regulating nutrient levels in the LYR as both sources and sinks. The result of PCA identified that PC1 (34.5%) correlated positively with flow, SSC, N, and P, and negatively with temperature and pH. PC2 (15.5%) linked to D50, SSA, and EC. During the WSR stage, dissolved nitrogen and phosphorus fluxes of the Yellow River Estuary accounted for 15.21% and 17.33% of their respective annual totals in 2023. The DIN/DIP ratio indicated that the lower Yellow River exhibited a phosphorus-limited potential eutrophic state, and the concentrations of ammonia nitrogen (NH4⁺-N) and total phosphorus (TP) have not consistently met the Class II standard of Environmental Quality Standards for Surface Water of China (GB3838-2002). Therefore, monitoring phosphorus pollutant inputs during the water-sediment regulation stage is of particular importance to river basin management agencies. This study enhances our understanding of nutrient transport during WSRS and offers a fresh perspective on nutrient delivery regulation in the LYR.
期刊介绍：
Environmental Geochemistry and Health publishes original research papers and review papers across the broad field of environmental geochemistry. Environmental geochemistry and health establishes and explains links between the natural or disturbed chemical composition of the earth’s surface and the health of plants, animals and people.
Beneficial elements regulate or promote enzymatic and hormonal activity whereas other elements may be toxic. Bedrock geochemistry controls the composition of soil and hence that of water and vegetation. Environmental issues, such as pollution, arising from the extraction and use of mineral resources, are discussed. The effects of contaminants introduced into the earth’s geochemical systems are examined. Geochemical surveys of soil, water and plants show how major and trace elements are distributed geographically. Associated epidemiological studies reveal the possibility of causal links between the natural or disturbed geochemical environment and disease. Experimental research illuminates the nature or consequences of natural or disturbed geochemical processes.
The journal particularly welcomes novel research linking environmental geochemistry and health issues on such topics as: heavy metals (including mercury), persistent organic pollutants (POPs), and mixed chemicals emitted through human activities, such as uncontrolled recycling of electronic-waste; waste recycling; surface-atmospheric interaction processes (natural and anthropogenic emissions, vertical transport, deposition, and physical-chemical interaction) of gases and aerosols; phytoremediation/restoration of contaminated sites; food contamination and safety; environmental effects of medicines; effects and toxicity of mixed pollutants; speciation of heavy metals/metalloids; effects of mining; disturbed geochemistry from human behavior, natural or man-made hazards; particle and nanoparticle toxicology; risk and the vulnerability of populations, etc.
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