| Spatial distribution, fractions, and potential release of sediment phosphorus in the Hongfeng Reservoir, southwest China | |
| Wang Jingfu; Chen Jingan; Yang Haiquan; Dai Zhihui | |
| 2015 | |
| 发表期刊 | Lake and Reservoir Management
 |
| 卷号 | 31期号:3页码:214-224 |
| 摘要 | investigated the spatial distributions of total phosphorus (P) and its fractions in the sediments from Hongfeng Reservoir, the largest man-made water body in southwest China, to reveal P sources to the reservoir and its pollution history. We sectioned sediment cores and measured P species concentrations, which increased progressively from relatively low concentrations at a depth of 20–30 cm to higher concentrations in upper sediment layers, reflecting an increase in P input that accompanied anthropogenic influences. P bound to metal oxides (NaOH-SRP) was the largest component of P in most core profiles, accounting for 34.6–67.2% of total P. The Yangchang River is the primary external P source to the reservoir and should be the focus of remediation efforts in the future. A batch P release experiment conducted using sediment cores showed that sediment P release was mainly caused by the transformation and/or desorption of NaOH–P and Residual–P under high temperature and low oxygen conditions. Large P release from sediments could affect the water quality of the reservoir in the future. Detailed knowledge of in situ microscale changes at the sediment–water interface is required to understand the migration of P fractions in the sediments. |
| 学科领域 | 环境地球化学 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.gyig.ac.cn/handle/352002/5786 |
| 专题 | 环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文 |
| 推荐引用方式 GB/T 7714 | Wang Jingfu,Chen Jingan,Yang Haiquan,et al. Spatial distribution, fractions, and potential release of sediment phosphorus in the Hongfeng Reservoir, southwest China[J]. Lake and Reservoir Management,2015,31(3):214-224. |
| APA | Wang Jingfu,Chen Jingan,Yang Haiquan,&Dai Zhihui.(2015).Spatial distribution, fractions, and potential release of sediment phosphorus in the Hongfeng Reservoir, southwest China.Lake and Reservoir Management,31(3),214-224. |
| MLA | Wang Jingfu,et al."Spatial distribution, fractions, and potential release of sediment phosphorus in the Hongfeng Reservoir, southwest China".Lake and Reservoir Management 31.3(2015):214-224. |
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