Quantitative assessment of nitrate sources in Jiaozhou Bay and its terrestrial inflows using nitrate stable isotope techniques
文献类型：期刊论文
| 作者 | Feng, Hao2,4; Wang, Wentao1,2,3; Yan, Mingyan4; Song, Xiuxian1,2,3; Yu, Zhiming1,2,3 |
| 刊名 | MARINE POLLUTION BULLETIN
 |
| 出版日期 | 2025-09-01 |
| 卷号 | 218页码:13 |
| 关键词 | Jiaozhou Bay Nitrate sources assessment Biogeochemical processes Nitrate stable isotopes Nitrate budget |
| ISSN号 | 0025-326X |
| DOI | 10.1016/j.marpolbul.2025.118203 |
| 通讯作者 | Wang, Wentao(wtwang@qdio.ac.cn) |
| 英文摘要 | Excessive inputs of nitrate from land-based sources can lead to coastal eutrophication, and accurate identification of nitrate sources is an important prerequisite for the effective control of eutrophication. In this study, we selected Jiaozhou Bay, a typical eutrophic bay, as the case study area. Using nitrate concentration, nitrogen and oxygen stable isotope data, along with analytical techniques such as the Bayesian-based SIAR model and the LOICZ approach, we systematically assessed the sources and budgets of land-sea nitrogen pollution under China's new policies for land-based total nitrogen prevention and control. The results revealed that sewage and faeces were the main sources of nitrate in the Dagu River and the Moshui River, accounting for 42.3 % and 62.0 % of contributions, respectively, with significant assimilation observed in the former. Land use type was a key factor influencing differences in source contribution ratios. Land-based nitrate inputs contributed 26.1 % to Jiaozhou Bay, while nitrification accounted for up to 69.0 % of nitrate production, with both terrestrial and marine environments contributing equally to this process. Nitrate removal in the bay was dominated by sedimentation and export to the Yellow Sea. These results highlight the critical role of nitrification in nitrate pollution within eutrophic bays and provide critical data to support the development of total nitrogen control strategies along the river-sea continuum. |
| WOS关键词 | ALLUVIAL GROUNDWATER ; NUTRIENT STRUCTURE ; NITROGEN-CYCLE ; CONTAMINATION ; SEAWATER ; RIVER ; IDENTIFICATION ; PHYTOPLANKTON ; NITRIFICATION ; ASSIMILATION |
| 资助项目 | Laoshan Laboratory[LSKJ202203901] ; Laoshan Laboratory[LSKJ202203700] |
| WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology |
| 语种 | 英语 |
| WOS记录号 | WOS:001503688000001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/202205]  |
| 专题 | 海洋研究所_海洋生态与环境科学重点实验室 |
| 通讯作者 | Wang, Wentao |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 3.Qingdao Marine Sci & Technol Ctr, Lab Marine Ecol & Environm Sci, Qingdao 266237, Peoples R China 4.Qingdao Univ Sci & Technol, Coll Biol Engn, Qingdao 266042, Peoples R China |
| 推荐引用方式 GB/T 7714 | Feng, Hao,Wang, Wentao,Yan, Mingyan,et al. Quantitative assessment of nitrate sources in Jiaozhou Bay and its terrestrial inflows using nitrate stable isotope techniques[J]. MARINE POLLUTION BULLETIN,2025,218:13. |
| APA | Feng, Hao,Wang, Wentao,Yan, Mingyan,Song, Xiuxian,&Yu, Zhiming.(2025).Quantitative assessment of nitrate sources in Jiaozhou Bay and its terrestrial inflows using nitrate stable isotope techniques.MARINE POLLUTION BULLETIN,218,13. |
| MLA | Feng, Hao,et al."Quantitative assessment of nitrate sources in Jiaozhou Bay and its terrestrial inflows using nitrate stable isotope techniques".MARINE POLLUTION BULLETIN 218(2025):13. |
入库方式： OAI收割
来源：海洋研究所
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