On the contribution of atmospheric reactive nitrogen deposition to nitrogen burden in a eutrophic Lake in eastern China
文献类型：期刊论文
| 作者 | Li, Weikun2; Wang, Xia2; Song, Wei6; Zhang, Zhongyi2; Wang, Xueying1; Liu, Xiaodong2; Ma, Tianming5; Wang, Qi6; Zhang, Yanli6 ; Wang, Xinming6
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| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2025 |
| 卷号 | 268页码:10 |
| 关键词 | Atmospheric reactive nitrogen deposition Atmospheric chemical transport model Eutrophic lakes Lake nitrogen burden |
| ISSN号 | 0043-1354 |
| DOI | 10.1016/j.watres.2024.122597 |
| 英文摘要 | Although it has been demonstrated that atmospheric reactive nitrogen (i.e., Nr mainly including NH3, NH4+, NOx, NO3- and etc.) deposition has substantial impacts on nitrogen pools in remote and/or sensitive lakes, there is a scarcity of systematic evaluations regarding the impact on nitrogen burden in eutrophic lakes with riverine input as primary nitrogen source. Utilizing a regional atmospheric chemical transport model, combined with observation-based estimates of atmospheric nitrogen deposition fluxes and riverine nitrogen inputs, we investigate the contribution of atmospheric Nr deposition to the fifth largest freshwater lake located in eastern China, i.e., the Chaohu Lake which is facing frequent outbreaks of algal bloom. The results indicate that in the studied year of 2022, riverine total nitrogen (TN) input to the lake was 11553.3 t N yr(-1) and atmospheric TN deposition was 2326.0 t N yr(-1). For Nr species which are directly available for the biosphere supporting algae and plant growth, riverine NH4+ input was 1856.1 t N yr(-1) and atmospheric NHx (NH3 and NH4+) deposition was 824.5 t N yr(-1). The latter accounts for 30.8% of total NHx input to the lake. For NOy (HNO3 and NO3-), riverine NO3- input was estimated as 2621.7 t N yr(-1), while atmospheric NOy deposition was 629.3 t N yr(-1), accounting for 19.4%. In all, atmospheric Nr deposition accounts for 24.5 % of total Nr input to the lake. Our results suggest that even in regions with dense human activities with primary riverine N input, atmospheric deposition of Nr could also contribute significantly to the bio-available nitrogen in lake systems, and addressing eutrophication in Lake Chaohu and other eutrophic lakes will also need to consider the influence of atmospheric Nr deposition which is related to NH3 and NOx (i.e., NO + NO2, the precursor of NOy) emissions, in addition to the mitigation of riverine N input. |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001368743700001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/81923]  |
| 专题 | 中国科学院广州地球化学研究所 |
| 通讯作者 | Geng, Lei |
| 作者单位 | 1.Lake Chaohu Adm Bur Anhui Prov, Lake Chaohu Res Inst, Hefei, Peoples R China 2.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Peoples R China 3.Univ Sci & Technol China, CAS Ctr Excellence Comparat Planetol, Hefei 230026, Anhui, Peoples R China 4.Deep Space Explorat Lab, Hefei, Peoples R China 5.Dalian Ocean Univ, Operat Oceanog Inst OOI, Sch Marine Sci & Environm Engn, Dalian 116023, Peoples R China 6.Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Weikun,Wang, Xia,Song, Wei,et al. On the contribution of atmospheric reactive nitrogen deposition to nitrogen burden in a eutrophic Lake in eastern China[J]. WATER RESEARCH,2025,268:10. |
| APA | Li, Weikun.,Wang, Xia.,Song, Wei.,Zhang, Zhongyi.,Wang, Xueying.,...&Geng, Lei.(2025).On the contribution of atmospheric reactive nitrogen deposition to nitrogen burden in a eutrophic Lake in eastern China.WATER RESEARCH,268,10. |
| MLA | Li, Weikun,et al."On the contribution of atmospheric reactive nitrogen deposition to nitrogen burden in a eutrophic Lake in eastern China".WATER RESEARCH 268(2025):10. |
入库方式： OAI收割
来源：广州地球化学研究所
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