Limited ability of estuarine fine-sized suspended particulate matter to carry bioavailable-phosphorus to mitigate marine phosphorus-limitation
文献类型：期刊论文
| 作者 | Hu, Nana1,2,3; Sheng, Yanqing2,3; Li, Zhaoran2; Wang, Zheng1,2; Kong, Xiangmin1,2; Wang, Hankun2 |
| 刊名 | JOURNAL OF ENVIRONMENTAL MANAGEMENT
 |
| 出版日期 | 2025-08-01 |
| 卷号 | 390页码:13 |
| 关键词 | Bioavailable-phosphorus Fine-sized suspended particulate matter Salinity Phosphorus fraction 31 P-NMR Yellow river estuary |
| ISSN号 | 0301-4797 |
| DOI | 10.1016/j.jenvman.2025.126279 |
| 通讯作者 | Sheng, Yanqing(yqsheng@yic.ac.cn) |
| 英文摘要 | Phosphorus (P) input from major rivers is considered to be vital for marine nutrient balance, supplying bioavailable-P. However, the potential for bioavailable-P carried by suspended particulate matter (SPM) to be transported to the open sea is unclear. This study investigated bioavailable-P distribution and transport on SPM at the Yellow River estuary using P fractionation, Ivanoff method, and 31P-NMR spectroscopy. Results indicate that the gravity sedimentation time of SPM is strongly negatively correlated with particle size (p < 0.05, r > 0.8). P fractionation showed NaOH-P and organic P (OP) in fine-sized SPM (settled after 200 min) were 1.84 and 1.69 times higher than in SPM settled at 10 min. However, 31P-NMR analysis demonstrated that the OP carried by fine-sized SPM was mainly orthophosphate monoester (low bioavailability and immobile) and pyrophosphate, accounting for over 95 % of biogenic-P (excluding orthophosphate).Ivanoff method found pyrophosphate in SPM would be eluted by estuarine salinity, increasing dissolved non-reactive P to 0.357 mg L-1. Specially, dissolved reactive P adsorption experiments showed fine-sized SPM is a weak source of dissolved reactive P in water column, while coarse-sized SPM is strong. It proved that NaOH-P in fine-sized SPM is more bio-unavailable Si-Al/Fe/Mn-P. Therefore, there is few bioavailable-P that can be carried by fine-sized SPM and transported over long distances to the open sea to alleviate nutrient imbalance in the Bohai Sea. |
| WOS关键词 | ORGANIC PHOSPHORUS ; INORGANIC PHOSPHORUS ; SEDIMENT ; LAKE ; NITROGEN ; TRANSFORMATION ; FRACTIONATION ; PHOSPHATES ; SPECIATION ; PARTICLES |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001568377500001 |
| 资助机构 | National Key Research and Development Program of China ; Project of Shandong Province Marine Aquaculture Innovation and Entrepreneurship Community |
| 源URL | [http://ir.yic.ac.cn/handle/133337/41346]  |
| 专题 | 烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室 |
| 通讯作者 | Sheng, Yanqing |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China 3.Shandong Acad Environm Planning, Lab Land & Sea Ecol Governance & Systemat Regulat, Jinan 250101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Nana,Sheng, Yanqing,Li, Zhaoran,et al. Limited ability of estuarine fine-sized suspended particulate matter to carry bioavailable-phosphorus to mitigate marine phosphorus-limitation[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2025,390:13. |
| APA | Hu, Nana,Sheng, Yanqing,Li, Zhaoran,Wang, Zheng,Kong, Xiangmin,&Wang, Hankun.(2025).Limited ability of estuarine fine-sized suspended particulate matter to carry bioavailable-phosphorus to mitigate marine phosphorus-limitation.JOURNAL OF ENVIRONMENTAL MANAGEMENT,390,13. |
| MLA | Hu, Nana,et al."Limited ability of estuarine fine-sized suspended particulate matter to carry bioavailable-phosphorus to mitigate marine phosphorus-limitation".JOURNAL OF ENVIRONMENTAL MANAGEMENT 390(2025):13. |
入库方式： OAI收割
来源：烟台海岸带研究所
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