Contrasting seasonal variations in riverine nitrogen and phosphorus concentrations in China: implications for N/P imbalances
文献类型：期刊论文
| 作者 | Liu, Honghao2,3; Gao, Lin2,3; Yuan, Ze2,3; Ma, Ting1,2,3 |
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2025-12-01 |
| 卷号 | 287页码:124317 |
| 关键词 | Riverine nitrogen and phosphorus Stoichiometric ratios Seasonal dynamics Nutrient limitation Climate and anthropogenic impacts |
| ISSN号 | 0043-1354 |
| DOI | 10.1016/j.watres.2025.124317 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Rivers are critical conduits of nitrogen (N) and phosphorus (P), essential nutrients that regulate the productivity and resilience of freshwater ecosystems through seasonal fluctuations. However, comprehensive assessments of the seasonal dynamics of N, P, and their stoichiometric ratios in river ecosystems, as along with the underlying natural and anthropogenic drivers of the magnitude of these seasonal variations, remain scarce. In this study, we conduct an investigation of seasonal variations in total nitrogen (TN), total phosphorus (TP) concentrations, and their stoichiometric ratios across 150 medium-sized river basins in China. Our findings reveal starkly contrasting seasonal trends: TP concentration peaks in spring and summer, while TN concentration reaches maximum levels in winter, resulting pronounced intra-annual fluctuations in TN:TP ratios. These divergent dynamics are modulated by a complex interplay of hydrological variability, temporal autocorrelation in nutrient concentrations, and temperature-driven processes. Seasonal fluctuation in the TN:TP ratio leads to spatiotemporal variability in nutrient constraints. Seasonal differences in water temperature and the magnitude of TN variability explain 22 % and 14 % of this variation, respectively, while climatic factors and anthropogenic influences account for 15 % and 13 %. Phosphorus-limitation dominates most river systems year-round, but seasonal shifts toward N-P co-limitation occur in southern basins during warmer months. Water temperature emerged as a primary driver, influencing the magnitude of seasonal variability in nutrient concentrations, with hydrological discharge and human activities providing additional influence. The seasonal variability of TN and TP is substantially greater in northern basins than in southern basins, and this regional heterogeneity is closely associated with differences in climate, land use, and anthropogenic inputs. These findings underscore the need for regionally adaptive, season-specific nutrient management strategies to address growing N/P imbalances exacerbated by climate change and anthropogenic impacts. |
| URL标识 | 查看原文 |
| WOS关键词 | WATER ; NUTRIENT ; TERM ; EUTROPHICATION ; SEDIMENTS ; STOICHIOMETRY ; VARIABILITY ; ECOSYSTEMS ; LIMITATION ; IMPACTS |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001544107200002 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/215600]  |
| 专题 | 资源与环境信息系统国家重点实验室_外文论文 |
| 通讯作者 | Ma, Ting |
| 作者单位 | 1.Jiangsu Ctr Collaborat Innovat Geog Informat Resou, Nanjing 210023, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China; 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Liu, Honghao,Gao, Lin,Yuan, Ze,et al. Contrasting seasonal variations in riverine nitrogen and phosphorus concentrations in China: implications for N/P imbalances[J]. WATER RESEARCH,2025,287:124317. |
| APA | Liu, Honghao,Gao, Lin,Yuan, Ze,&Ma, Ting.(2025).Contrasting seasonal variations in riverine nitrogen and phosphorus concentrations in China: implications for N/P imbalances.WATER RESEARCH,287,124317. |
| MLA | Liu, Honghao,et al."Contrasting seasonal variations in riverine nitrogen and phosphorus concentrations in China: implications for N/P imbalances".WATER RESEARCH 287(2025):124317. |
入库方式： OAI收割
来源：地理科学与资源研究所
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