| Removal Capacities and Environmental Constrains of Denitrification and Anammox Processes in Eutrophic Riverine Sediments | |
Li, Jialin1,2 ; Yu, Shuxian1; Qin, Song1,2
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| 发表期刊 | WATER AIR AND SOIL POLLUTION
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| ISSN | 0049-6979 |
| 2020-05-27 | |
| 卷号 | 231期号:6页码:16 |
| 关键词 | Denitrification Anammox Functional community Geochemical constraint Eutrophic riverine sediments |
| DOI | 10.1007/s11270-020-04593-z |
| 通讯作者 | Qin, Song([email protected]) |
| 英文摘要 | Excessive nitrogen (N) loading has had severe consequences in coastal zones around the world. Denitrification and anammox are major microbial pathways for removing N in aquatic environments before it is exported to the coast. To assess two processes in eutrophic riverine systems, the denitrification and anammox and their bacterial participants were investigated in sediments of the Xiaoqing (XQ) River and Jiaolai (JL) River in Northeast China. By combining the evidence from N-15 isotope tracing experiment and functional gene-based analysis, it was found that denitrification and anammox are ubiquitous along the investigated riverine sediments. The denitrification varied from 39.38 to 1433.01 nmol N-2 m(-2) h(-1). Moreover, the anammox rates were in the range of 15.91 to 1209.97 nmol N-2 m(-2) h(-1). Quantitative PCR results revealed that the nirK and nirS genes were in the order of 10(4)-10(6) copies g(-1) and 10(3)-10(5) copies g(-1), respectively, in both river sediments, while the hzsA was in the order of 10(6)-10(5) copies g(-1) in XQ at approximately two orders of magnitude compared with JL. The phylogenetic analysis of functional genes revealed the high diversity of the denitrifier and low diversity of anammox bacteria. Variance partitioning analyses verified that the grain particle characteristics were the major factor group determined the N removal efficiency. The denitrification and anammox processes were estimated to have removed 16.1% of the inorganic nitrogen inputs before being exported to Laizhou Bay, which highlights that a more extensive understanding of the regularity of the N removal processes is important in the technical remediation of eutrophication problems. |
| 资助机构 | National Natural Science Foundation of China ; Science and Technology program of Yantai |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | ANAEROBIC AMMONIUM OXIDATION ; NITROGEN LOSS ; POTENTIAL DENITRIFICATION ; VEGETATION GRADIENT ; OXIDIZING BACTERIA ; COASTAL WATERS ; COLNE ESTUARY ; LAIZHOU BAY ; ABUNDANCE ; RATES |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences ; Water Resources |
| WOS记录号 | WOS:000535875700001 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/29078 |
| 专题 | 海岸带生物学与生物资源利用重点实验室 海岸带生物学与生物资源利用重点实验室_海岸带生物学与生物资源保护实验室 |
| 通讯作者 | Qin, Song |
| 作者单位 | 1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Lab Coastal Biol & Bioresource Conservat, Yantai 264003, Peoples R China 2.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Jialin,Yu, Shuxian,Qin, Song. Removal Capacities and Environmental Constrains of Denitrification and Anammox Processes in Eutrophic Riverine Sediments[J]. WATER AIR AND SOIL POLLUTION,2020,231(6):16. |
| APA | Li, Jialin,Yu, Shuxian,&Qin, Song.(2020).Removal Capacities and Environmental Constrains of Denitrification and Anammox Processes in Eutrophic Riverine Sediments.WATER AIR AND SOIL POLLUTION,231(6),16. |
| MLA | Li, Jialin,et al."Removal Capacities and Environmental Constrains of Denitrification and Anammox Processes in Eutrophic Riverine Sediments".WATER AIR AND SOIL POLLUTION 231.6(2020):16. |
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