Denitrification rate determined by nitrate disappearance is higher than determined by nitrous oxide production with acetylene blockage
文献类型：期刊论文
| 作者 | Yu, KW; Struwe, S; Kjoller, A; Chen, GX; Yu, KW, Louisiana State Univ, Dept Oceanog & Coastal Sci, Baton Rouge, LA 70803 USA |
| 刊名 | ECOLOGICAL ENGINEERING
 |
| 出版日期 | 2008 |
| 卷号 | 32期号:1页码:90-96 |
| 关键词 | Denitrification Nitrous Oxide Nitric Oxide Acetylene Nitrate Reduction |
| ISSN号 | 0925-8574 |
| 英文摘要 | A mixed beech and spruce forest soil was incubated under potential denitrification assay (PDA) condition with 10% acetylene (C2H2) in the headspace of soil slurry bottles. Nitrous oxide (N2O) concentration in the headspace, as well as nitrate, nitrite and ammonium concentrations in the soil slurries were monitored during the incubation. Results show that nitrate disappearance rate was higher than N2O production rate with C2H2 blockage during the incubation. Sum of nitrate, nitrite, and N2O with C2H2 blockage could not recover the original soil nitrate content, showing an N imbalance in such a closed incubation system. Changes in nitrite and ammonium concentration during the incubation could not account for the observed faster nitrate disappearance rate and the N imbalance. Non-determined nitric oxide (NO) and N-2 production could be the major cause, and the associated mechanisms could vary for different treatments. Commonly applied PDA measurement likely underestimates the nitrate removal capacity of a system. Incubation time and organic matter/nitrate ratio are the most critical factors to consider using C2H2 inhibition technique to quantify denitrification. By comparing the treatments with and without an antibiotic, the results suggest that microbial N uptake probably played a minor role in N balance, and other denitrifying enzymes but nitrate reductase could be substantially synthesized during the incubation. (C) 2007 Elsevier B.V. All rights reserved. |
| 学科主题 | Ecology ; Engineering, Environmental ; Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000252768500011 |
| 公开日期 | 2011-09-23 |
| 源URL | [http://210.72.129.5/handle/321005/54543]  |
| 专题 | 沈阳应用生态研究所_沈阳应用生态研究所 |
| 通讯作者 | Yu, KW, Louisiana State Univ, Dept Oceanog & Coastal Sci, Baton Rouge, LA 70803 USA |
| 推荐引用方式 GB/T 7714 | Yu, KW,Struwe, S,Kjoller, A,et al. Denitrification rate determined by nitrate disappearance is higher than determined by nitrous oxide production with acetylene blockage[J]. ECOLOGICAL ENGINEERING,2008,32(1):90-96. |
| APA | Yu, KW,Struwe, S,Kjoller, A,Chen, GX,&Yu, KW, Louisiana State Univ, Dept Oceanog & Coastal Sci, Baton Rouge, LA 70803 USA.(2008).Denitrification rate determined by nitrate disappearance is higher than determined by nitrous oxide production with acetylene blockage.ECOLOGICAL ENGINEERING,32(1),90-96. |
| MLA | Yu, KW,et al."Denitrification rate determined by nitrate disappearance is higher than determined by nitrous oxide production with acetylene blockage".ECOLOGICAL ENGINEERING 32.1(2008):90-96. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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