Photo-induced phosphate release during sediment resuspension in shallow lakes: A potential positive feedback mechanism of eutrophication
文献类型：期刊论文
| 作者 | Guo, Minli2; Li, Xiaolu2; Song, Chunlei1; Liu, Guanglong2; Zhou, Yiyong1 |
| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2020-03-01 |
| 卷号 | 258页码:7 |
| ISSN号 | 0269-7491 |
| 关键词 | Phosphate Sediment Organic phosphorus Photo-release Eutrophication |
| DOI | 10.1016/j.envpol.2019.113679 |
| 通讯作者 | Liu, Guanglong(liugl@mail.hzau.edu.cn) |
| 英文摘要 | Dissolved phosphate (P-i) can be released during resuspended sediments exposed to sunlight. However, the significance of this phenomenon in the process of eutrophication is not clear. In this study, the behavior of photo-induced P-i release during sediment resuspension in shallow lakes with the different trophic states was investigated. The amount of photo-induced P-i release in the sediment resuspension from Lake Liangzi, Lake Dong, Lake Tangxun and Lake Longyang in China was 0.013, 0.019, 0.032, and 0.048 mg/L, respectively, and increased as the trophic states of the lakes increased. The results of phosphorus speciation analysis showed that the phosphate monoester in the particulate phosphorus is the organic phosphorus species participated in the photochemical reaction. The steady-state concentration of hydroxyl radical ((OH)-O-center dot) in the sediment resuspension also increased along with the trophic states of lakes increased and dissolved organic matter (DOM), nitrate, and Fe3+ presented in sediment resuspension were the main photosensitizers for (OH)-O-center dot production. All these results indicate that the increase of trophic states of lakes leads to the accumulation of organic phosphorus and (OH)-O-center dot, resulting in more dissolved phosphate photo-released, which accelerate the eutrophication process in a form of positive feedback. (C) 2019 Elsevier Ltd. All rights reserved. |
| WOS关键词 | ORGANIC PHOSPHORUS COMPOSITION ; PHOTOCHEMICAL RELEASE ; HYDROXYL RADICALS ; COASTAL SEAWATERS ; PHOTODEGRADATION ; FRACTIONS ; MATTER ; BIOAVAILABILITY ; DEGRADATION ; ESTUARINE |
| 资助项目 | National Natural Science Foundation of China[41877461] ; National Key Research and Development Program of China[2017YFD0800102] ; National Key Research and Development Program of China[2018YFD0800600] ; Fok Ying Tong Education Foundation, China[151078] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| WOS记录号 | WOS:000519655100118 |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Fok Ying Tong Education Foundation, China ; Fok Ying Tong Education Foundation, China ; Fok Ying Tong Education Foundation, China ; Fok Ying Tong Education Foundation, China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Fok Ying Tong Education Foundation, China ; Fok Ying Tong Education Foundation, China ; Fok Ying Tong Education Foundation, China ; Fok Ying Tong Education Foundation, China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Fok Ying Tong Education Foundation, China ; Fok Ying Tong Education Foundation, China ; Fok Ying Tong Education Foundation, China ; Fok Ying Tong Education Foundation, China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Fok Ying Tong Education Foundation, China ; Fok Ying Tong Education Foundation, China ; Fok Ying Tong Education Foundation, China ; Fok Ying Tong Education Foundation, China |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/35989]  |
| 专题 | 水生生物研究所_水环境工程研究中心_期刊论文 |
| 通讯作者 | Liu, Guanglong |
| 作者单位 | 1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China 2.Huazhong Agr Univ, Coll Resources & Environm, Key Lab Arable Land Conservat Middle & Lower Reac, Minist Agr & Rural Affairs, Wuhan 430070, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Minli,Li, Xiaolu,Song, Chunlei,et al. Photo-induced phosphate release during sediment resuspension in shallow lakes: A potential positive feedback mechanism of eutrophication[J]. ENVIRONMENTAL POLLUTION,2020,258:7. |
| APA | Guo, Minli,Li, Xiaolu,Song, Chunlei,Liu, Guanglong,&Zhou, Yiyong.(2020).Photo-induced phosphate release during sediment resuspension in shallow lakes: A potential positive feedback mechanism of eutrophication.ENVIRONMENTAL POLLUTION,258,7. |
| MLA | Guo, Minli,et al."Photo-induced phosphate release during sediment resuspension in shallow lakes: A potential positive feedback mechanism of eutrophication".ENVIRONMENTAL POLLUTION 258(2020):7. |
入库方式： OAI收割
来源：水生生物研究所
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