DOI: 10.1007/s10533-017-0306-0
Scopus记录号: 2-s2.0-85013073165
论文题名: N2O and NOx emissions by reactions of nitrite with soil organic matter of a Norway spruce forest
作者: Wei J. ; Amelung W. ; Lehndorff E. ; Schloter M. ; Vereecken H. ; Brüggemann N.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 132, 期: 3 起始页码: 325
结束页码: 342
语种: 英语
英文关键词: Nitric oxide
; Nitrous oxide
; NO2 −
; Site preference
; Soil organic matter
Scopus关键词: acid soil
; coniferous forest
; emission
; forest soil
; nitric oxide
; nitrogen cycle
; nitrous oxide
; sampling
; soil organic matter
; Picea abies
英文摘要: Abstract: Nitrite (NO2 −) as an important intermediate of the biological nitrogen cycle is particularly reactive in acidic soils and acts as a source of N2O and NOx (NO and NO2). However, abiotic and biotic pathways of NO2 −-driven N2O and NOx production in forest soil and the role of soil organic matter (SOM) in these processes are still unclear. In this study, NO2 − was applied to both unsterile and sterilized soil samples as well as to different SOM fractions from a Norway spruce forest. Biotic and abiotic N2O emission was measured with an infrared absorption analyzer and gas chromatography, while NOx emission was quantified with a chemiluminescence analyzer. Isotopic signatures of N2O (δ15Nbulk, δ18O, and 15N-N2O site preference) were analyzed with an isotope ratio mass spectrometer. After NO2 − addition, a large amount of NOx was emitted immediately, while N2O emission occurred 15–60 min later and was much lower compared to NOx. Sterilization of soil decreased N2O emission significantly, but not NOx emission. The 15N site preference of N2O ranged from 7.98 to 11.58‰ for abiotic and 4.69–7.42‰ for biotic sources. The fulvic acid fraction contributed the most to abiotic N2O emission, while the fastest NO and N2O emission occurred after NO2 −application to the humin fraction, followed by the humic acid fraction. These results are important for the future understanding of NOx and N2O sources, as well as the use of isotopic signatures for source-partitioning N2O emission from soil. Graphical Abstract: [Figure not available: see fulltext.] © 2017, Springer International Publishing Switzerland. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83299
Appears in Collections: 气候减缓与适应 气候变化事实与影响
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作者单位: Forschungszentrum Jülich GmbH, Institute of Bio- and Geosciences, Agrosphere (IBG-3), Wilhelm-Johnen-Straße, Jülich, Germany; Institute of Crop Science and Resource Conservation, Soil Science & Soil Ecology, University of Bonn, Nussallee 13, Bonn, Germany; Research Unit for Environmental Genomics, Helmholtz Zentrum München-Deutsches Forschungszentrum für Gesundheit und Umwelt (GmbH), Ingolstädter Landstraße 1, Neuherberg, Germany
Recommended Citation:
Wei J.,Amelung W.,Lehndorff E.,et al. N2O and NOx emissions by reactions of nitrite with soil organic matter of a Norway spruce forest[J]. Biogeochemistry,2017-01-01,132(3)