Enhancement of sediment phosphorus release during a tunnel construction across an urban lake (Lake Donghu, China)
文献类型：期刊论文
| 作者 | Wang, Siyang1,2; Li, Hui3; Xiao, Jian1,2; Zhou, Yiyong1; Song, Chunlei1; Bi, Yonghong1; Cao, Xiuyun1 |
| 刊名 | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
 |
| 出版日期 | 2016-09-01 |
| 卷号 | 23期号:17页码:17774-17783 |
| 关键词 | Tunnel construction Alkaline phosphatase Dehydrogenase Extracellular enzymes Iron-bound phosphorus Lake eutrophication |
| ISSN号 | 0944-1344 |
| 英文摘要 | Tunnel construction in watershed area of urban lakes would accelerate eutrophication by inputting nutrients into them, while mechanisms underlying the internal phosphorus cycling as affected by construction events are scarcely studied. Focusing on two main pathways of phosphorus releasing from sediment (enzymatic mineralization and anaerobic desorption), spatial and temporal variations in phosphorus fractionation, and activities of extracellular enzymes (alkaline phosphatase, beta-1,4-glucosidase, leucine aminopeptidase, dehydrogenase, lipase) in sediment were examined, together with relevant parameters in interstitial and surface waters in a Chinese urban lake (Lake Donghu) where a subaqueous tunnel was constructed across it from October 2013 to July 2014. Higher alkaline phosphatase activity (APA) indicated phosphorus deficiency for phytoplankton, as illustrated by a significantly negative relationship between APA and concentration of dissolved total phosphorus (DTP). Noticeably, in the construction area, APAs in both sediment and surface water were significantly lower than those in other relevant basins, suggesting a phosphorus supply from some sources in this area. In parallel, its sediment gave the significantly lower iron-bound phosphorus (Fe(OOH)similar to P) content, coupled with significantly higher ratio of iron (II) to total iron content (Fe2+/TFe) and dehydrogenase activities (DHA). Contrastingly, difference in the activities of sediment hydrolases was not significant between the construction area and other basins studied. Thus, in the construction area, subsidy of bioavailable phosphorus from sediment to surface water was attributable to the anaerobic desorption of Fe(OOH)similar to P rather than enzymatic mineralization. Finally, there exisosphate, and thereby facilitating phytoplankton growth in water column.ted a significantly positive relationship between chlorophyll a concentration in surface water and Fe(OOH)similar to P content in sediment. In short, construction activities within lakes may interrupt cycling patterns of phosphorus across sediment-water interface by enhancing release of redox-sensitive ph |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Environmental Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 关键词[WOS] | ALKALINE-PHOSPHATASE ACTIVITY ; WATER-QUALITY ; DEHYDROGENASE-ACTIVITY ; SHALLOW LAKE ; RESERVOIR ; DYNAMICS ; RIVER ; SOIL ; EUTROPHICATION ; MANAGEMENT |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000382674800081 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/28338]  |
| 专题 | 水生生物研究所_藻类生物学及应用研究中心_学位论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, 7 Donghu South Rd, Wuhan 430072, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China 3.Tongren Univ, Coll Biol & A&F Engn, Tongren 554300, Guizhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Siyang,Li, Hui,Xiao, Jian,et al. Enhancement of sediment phosphorus release during a tunnel construction across an urban lake (Lake Donghu, China)[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2016,23(17):17774-17783. |
| APA | Wang, Siyang.,Li, Hui.,Xiao, Jian.,Zhou, Yiyong.,Song, Chunlei.,...&Cao, Xiuyun.(2016).Enhancement of sediment phosphorus release during a tunnel construction across an urban lake (Lake Donghu, China).ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,23(17),17774-17783. |
| MLA | Wang, Siyang,et al."Enhancement of sediment phosphorus release during a tunnel construction across an urban lake (Lake Donghu, China)".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 23.17(2016):17774-17783. |
入库方式： OAI收割
来源：水生生物研究所
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