中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Strong turbulence accelerates sediment nitrification-denitrification for nitrogen loss in shallow lakes

文献类型:期刊论文

作者Zhu, Lin; Shi, Wenqing; Zhou, Jian; Yu, Jianghua; Kong, Lingwei; Qin, Boqiang
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2021
卷号761
英文摘要Due to energy dissipation, turbulent energy reaching bed sediment greatly differs in lakes with different depths, which potentially affects sediment denitrification and thereby nitrogen loss. In this study, we explored the impacts of turbulent energy reaching sediment on sediment nitrification rate using turbulence simulation experiments, and analyzed its role in determining sediment nitrogen loss in global lakes by investigating the relationship between denitrification rate with lake depth. Results demonstrated that sediment denitrification rate is affected by water depth in lakes with a depth of similar to 10 m. In shallow lakes, stronger turbulence reaching on sediment yielded higher nitrogen loss rate. Compare with the control, cumulated nitrogen loss from sediment increased by 10% at the turbulent velocity of 4.33 cm s(-1) upon sediment. It is possibly because turbulence promoted faster transport of oxygen to surface sediment and enhanced the mineralization of buried organic matters to feed nitrification, which subsequently accelerated denitrification and thereby nitrogen loss. This study can add to our understanding of the role of lake morphology in nitrogen biogeochemical cycles. (C) 2020 Published by Elsevier B.V.
源URL[http://159.226.73.51/handle/332005/20594]  
专题中国科学院南京地理与湖泊研究所
推荐引用方式
GB/T 7714
Zhu, Lin,Shi, Wenqing,Zhou, Jian,et al. Strong turbulence accelerates sediment nitrification-denitrification for nitrogen loss in shallow lakes[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,761.
APA Zhu, Lin,Shi, Wenqing,Zhou, Jian,Yu, Jianghua,Kong, Lingwei,&Qin, Boqiang.(2021).Strong turbulence accelerates sediment nitrification-denitrification for nitrogen loss in shallow lakes.SCIENCE OF THE TOTAL ENVIRONMENT,761.
MLA Zhu, Lin,et al."Strong turbulence accelerates sediment nitrification-denitrification for nitrogen loss in shallow lakes".SCIENCE OF THE TOTAL ENVIRONMENT 761(2021).

入库方式: OAI收割

来源:南京地理与湖泊研究所

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