Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.scitotenv.2021.152451 |
Submerged macrophytes regulate diurnal nitrous oxide emissions from a shallow eutrophic lake: A case study of Lake Wuliangsuhai in the temperate arid region of China | |
Ni, Ming; Liang, Xia; Hou, Lijun; Li, Weiping; He, Chiquan | |
通讯作者 | Liang, X (corresponding author),East China Normal Univ, State Key Lab Estuarine & Coastal Res, Shanghai 200244, Peoples R China. |
来源期刊 | SCIENCE OF THE TOTAL ENVIRONMENT |
ISSN | 0048-9697 |
EISSN | 1879-1026 |
出版年 | 2022 |
卷号 | 811 |
英文摘要 | Submerged macrophytes can increase oxygen concentrations of water and promote diel oxygen fluctuations, and this phenomenon is hypothesized to play a vital role in regulating nitrous oxide (N2O) emissions from eutrophic lakes. However, the effects of submerged macrophytes on N2O emissions in shallow eutrophic lakes remain poorly investigated. In this study, Lake Wuliangsuhai, a typical shallow eutrophic lake, was investigated to study the role of submerged macrophytes in regulating N2O emissions. We measured the N2O fluxes and related parameters through continual 72-h in situ diel monitoring in two sampling sections that covered dense submerged macrophyte areas and open water. In this study, the dissolved oxygen (DO) concentration of the water in the submerged macrophyte area exhibited significant diurnal variations, with significantly higher water oxygen concentrations than the open water area during the daytime. The N2O fluxes of Lake Wuliangsuhai ranged from 0.01 to 0.24 mu mol m-2 h-1, with an average value of 0.11 mu mol m-2 h-1. Moreover, significant diel variations in the N2O flux and net N2O production were observed in the submerged macrophyte areas, where the maximum N2O flux occurred at midday. The molar ratios of NH4+-N to oxygen (N/O ratio) of the water were responsible for the diel variations in the N2O production in the lake. However, the high oxygen concentration of the water was the major regulator of the N2O flux of Lake Wuliangsuhai. Therefore, submerged macrophyte restoration is significant not only for water quality improvement in shallow eutrophic lakes but also for N2O emission mitigation by increasing the DO concentration of the water. |
英文关键词 | Nitrous oxide Submerged macrophytes Eutrophication Lake Wuliangsuhai |
类型 | Article |
语种 | 英语 |
收录类别 | SCI-E |
WOS记录号 | WOS:000740212200004 |
WOS关键词 | NITRIFIER DENITRIFICATION ; SPATIAL VARIABILITY ; N2O EMISSIONS ; WIND-SPEED ; WATER ; NITRIFICATION ; OXYGEN ; VEGETATION ; PATHWAYS ; STREAMS |
WOS类目 | Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/376888 |
作者单位 | [Ni, Ming; He, Chiquan] Shanghai Univ, Sch Environm & Chem Engn, Shanghai 200444, Peoples R China; [Liang, Xia; Hou, Lijun] East China Normal Univ, State Key Lab Estuarine & Coastal Res, Shanghai 200244, Peoples R China; [Li, Weiping] Inner Mongolia Univ Sci & Technol, Sch Energy & Environm, Baotou 014010, Peoples R China |
推荐引用方式 GB/T 7714 | Ni, Ming,Liang, Xia,Hou, Lijun,et al. Submerged macrophytes regulate diurnal nitrous oxide emissions from a shallow eutrophic lake: A case study of Lake Wuliangsuhai in the temperate arid region of China[J],2022,811. |
APA | Ni, Ming,Liang, Xia,Hou, Lijun,Li, Weiping,&He, Chiquan.(2022).Submerged macrophytes regulate diurnal nitrous oxide emissions from a shallow eutrophic lake: A case study of Lake Wuliangsuhai in the temperate arid region of China.SCIENCE OF THE TOTAL ENVIRONMENT,811. |
MLA | Ni, Ming,et al."Submerged macrophytes regulate diurnal nitrous oxide emissions from a shallow eutrophic lake: A case study of Lake Wuliangsuhai in the temperate arid region of China".SCIENCE OF THE TOTAL ENVIRONMENT 811(2022). |
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