Distinctive Patterns and Controls of Nitrous Oxide Concentrations and Fluxes from Urban Inland Waters
文献类型：期刊论文
| 作者 | Wang, Gongqin3; Xia, Xinghui3; Liu, Shaoda3; Zhang, Sibo1; Yan, Weijin4 ; McDowell, William H.2
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| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
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| 出版日期 | 2021-06-15 |
| 卷号 | 55期号:12页码:8422-8431 |
| 关键词 | nitrous oxide (N2O ) greenhouse gas N2O emission factor N2O yield urban inland waters wastewater treatment plants |
| ISSN号 | 0013-936X |
| DOI | 10.1021/acs.est.1c00647 |
| 通讯作者 | Xia, Xinghui(xiaxh@bnu.edu.cn) |
| 英文摘要 | Inland waters are significant sources of nitrous oxide (N2O), a powerful greenhouse gas. However, considerable uncertainty exists in the estimates of N2O efflux from global inland waters due to a lack of direct measurements in urban inland waters, which are generally characterized by high carbon and nitrogen concentrations and low carbon-to-nitrogen ratios. Herein, we present direct measurements of N2O concentrations and fluxes in lakes and rivers of Beijing, China, during 2018-2020. N2O concentrations and fluxes in the waters of Beijing exceeded previous estimates of global rivers due to the high carbon and nutrient concentrations and high aquatic productivity. In contrast, the N2O emission factor (N2O-N/DIN, median 0.0005) was lower than global medians and the N2O yield (Delta N2O/(Delta N2O + Delta N)(2) average 1.6%) was higher than those typically observed in rivers and streams. The positive relationship between N2O and denitrifying bacteria as well as the Michaelis-Menten relationship between N2O emissions and NO3--N concentrations suggested that bacteria control the net production ofN(2)O in waters of Beijing with N saturation, leading to a low N2O emission factor. However, low carbon-to-nitrogen ratios are beneficial for N2O accumulation during denitrification, resulting in high N2O yields. This study demonstrates the significant N2O emissions and their distinctive patterns and controls in urban inland waters and suggests that N2O emission estimates based on nitrogen loads and simple emission factor values are not appropriate for urban inland water systems. |
| WOS关键词 | DISSIMILATORY NITRATE REDUCTION ; GREENHOUSE-GAS EMISSIONS ; N2O EMISSIONS ; RIVER NETWORK ; DENITRIFICATION ; STREAM ; SCALE ; CARBON ; NITRIFICATION ; SEDIMENTS |
| 资助项目 | National Key R&D Program of China[2017YFA0605001] ; National Natural Science Foundation of China[52039001] ; National Natural Science Foundation of China[92047303] |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000663939900065 |
| 出版者 | AMER CHEMICAL SOC |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/163893]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Xia, Xinghui |
| 作者单位 | 1.Guangdong Univ Technol, Inst Environm & Ecol Engn, Guangdong Prov Key Lab Water Qual Improvement & E, Guangzhou 510006, Peoples R China 2.Univ New Hampshire, Dept Nat Resources & Environm, Durham, NH 03824 USA 3.Beijing Normal Univ, Sch Environm, Key Lab Water & Sediment Sci, State Key Lab Water Environm Simulat,Minist Educ, Beijing 100875, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Gongqin,Xia, Xinghui,Liu, Shaoda,et al. Distinctive Patterns and Controls of Nitrous Oxide Concentrations and Fluxes from Urban Inland Waters[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2021,55(12):8422-8431. |
| APA | Wang, Gongqin,Xia, Xinghui,Liu, Shaoda,Zhang, Sibo,Yan, Weijin,&McDowell, William H..(2021).Distinctive Patterns and Controls of Nitrous Oxide Concentrations and Fluxes from Urban Inland Waters.ENVIRONMENTAL SCIENCE & TECHNOLOGY,55(12),8422-8431. |
| MLA | Wang, Gongqin,et al."Distinctive Patterns and Controls of Nitrous Oxide Concentrations and Fluxes from Urban Inland Waters".ENVIRONMENTAL SCIENCE & TECHNOLOGY 55.12(2021):8422-8431. |
入库方式： OAI收割
来源：地理科学与资源研究所
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