Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017WR021680 |
Denitrification Temperature Dependence in Remote, Cold, and N-Poor Lake Sediments | |
Palacin-Lizarbe, Carlos1,2; Camarero, Lluis2; Catalan, Jordi1,3 | |
2018-02-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:2页码:1161-1173 |
文章类型 | Article |
语种 | 英语 |
国家 | Spain |
英文摘要 | The reservoir size and pathway rates of the nitrogen (N) cycle have been deeply modified by the human enhancement of N fixation, atmospheric emissions, and climate warming. Denitrification (DEN) transforms nitrate into nitrogenous gas and thus removes reactive nitrogen (N-r) back to the atmospheric reservoir. There is still a rather limited knowledge of the denitrification rates and their temperature dependence across ecosystems; particularly, for the abundant cold and N-poor freshwater systems (e.g., Arctic and mountain lakes). We experimentally investigated the denitrification rates of mountain lake sediments by manipulating nitrate concentration and temperature on field collected cores. DEN rates were nitrate limited in field conditions and showed a large potential for an immediate DEN increase with both warming and higher N-r load. The estimated activation energy (E-a) for denitrification at nitrate saturation was 467 kJmol(-1) (Q(10) 1.70.4). The apparent E-a increased with nitrate (M) limitation as E-a=46+419 [NO3-](-1). Accordingly, we suggest that climate warming may have a synergistic effect with N emission reduction to readjusting the N cycle. Changes of nitrate availability might be more relevant than direct temperature effects on denitrification. |
英文关键词 | nitrogen cycle activation energy |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000428474500028 |
WOS关键词 | DISSIMILATORY NITRATE REDUCTION ; NITROUS-OXIDE REDUCTION ; ENVIRONMENTAL CONTROLS ; AMMONIUM DNRA ; FRESH-WATER ; AQUATIC ECOSYSTEMS ; REACTIVE NITROGEN ; MOUNTAIN LAKES ; CLIMATE-CHANGE ; ANAMMOX |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/19957 |
专题 | 资源环境科学 |
作者单位 | 1.CREAF, Campus UAB,Edifici C, Cerdanyola Del Valles, Spain; 2.CSIC, CEAB, Ctr Adv Studies Blanes, Blanes, Girona, Spain; 3.CSIC, Cerdanyola Del Valles, Spain |
推荐引用方式 GB/T 7714 | Palacin-Lizarbe, Carlos,Camarero, Lluis,Catalan, Jordi. Denitrification Temperature Dependence in Remote, Cold, and N-Poor Lake Sediments[J]. WATER RESOURCES RESEARCH,2018,54(2):1161-1173. |
APA | Palacin-Lizarbe, Carlos,Camarero, Lluis,&Catalan, Jordi.(2018).Denitrification Temperature Dependence in Remote, Cold, and N-Poor Lake Sediments.WATER RESOURCES RESEARCH,54(2),1161-1173. |
MLA | Palacin-Lizarbe, Carlos,et al."Denitrification Temperature Dependence in Remote, Cold, and N-Poor Lake Sediments".WATER RESOURCES RESEARCH 54.2(2018):1161-1173. |
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