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题名: Submerged macrophyte Ceratophyllum demersum affects phosphorus exchange at the sediment-water interface
作者: Dai, Yanran1; Cheng, Shuiping1; Liang, Wei2; Wu, Zhenbin2
通讯作者: Liang, W (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China.
关键词: Ceratophyllum demersum L. ; eutrophic water body ; phosphorus release ; phosphate sorption ; sediment
刊名: WATER SCIENCE AND TECHNOLOGY
发表日期: 2015
DOI: 10.2166/wst.2015.050
卷: 71, 期:6, 页:913-921
收录类别: SCI
文章类型: Article
部门归属: [Dai, Yanran ; Cheng, Shuiping] Tongji Univ, Minist Educ, Key Lab Yangtze River Water Environm, Shanghai 200092, Peoples R China ; [Liang, Wei ; Wu, Zhenbin] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
WOS标题词: Science & Technology ; Technology ; Life Sciences & Biomedicine ; Physical Sciences
类目[WOS]: Engineering, Environmental ; Environmental Sciences ; Water Resources
研究领域[WOS]: Engineering ; Environmental Sciences & Ecology ; Water Resources
英文摘要: Substantial research efforts were made to assess the effects of submerged macrophytes on water quality improvement, but information on the mechanism of submerged macrophytes relative to the exchange of phosphorus (P) at the sediment-water interface is very limited. To help fill the void, a popular species, Ceratophyllum demersum L. was chosen to address the effects and mechanisms of submerged macrophyte growth on the processes of P exchange across the sediment-water interface. In treatment mesocosms (planted), equilibrium phosphorus concentration (EPC0) value falls from 68.4 to 36.0 mu g/L, with a mean value of 52.5 mu g/L. Conversely, the distribution coefficient (Kd) value has a predominantly increasing trend. But they are both significantly higher than an unplanted control (p < 0.05). Also, in the planted mesocosm, maximum phosphate sorption capacity (Q(max)) was significantly reduced (4,721-3,845 mg/kg), and most of the linear correlations between different forms of phosphorus and sediment P adsorption parameters were affected (p < 0.05). The EPC0 Percentage Saturation percentages (EPCsat) in planted groups were 325% higher than that in control (p < 0.05). We conclude that C. demersum could promote the release of P from sediments, and soluble reactive phosphorus concentration in overlying water is probably the driving force for P exchange at the sediment-water interface.
关键词[WOS]: PHOSPHATE SORPTION ; ORGANIC-MATTER ; LAKE-SEDIMENTS ; BED SEDIMENTS ; RESTORATION ; ADSORPTION ; RETENTION ; RELEASE ; BAY ; L.
语种: 英语
WOS记录号: WOS:000352978200016
ISSN号: 0273-1223
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/23942
Appears in Collections:水环境工程研究中心_期刊论文

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作者单位: 1.Tongji Univ, Minist Educ, Key Lab Yangtze River Water Environm, Shanghai 200092, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
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