| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10846072 | Soil Biology and Biochemistry | 2011 | 11 Pages |
Abstract
⺠Antecedent soil moisture conditions affected denitrification. The N2+N2O fluxes and the N2/N2O ratios were higher in soils which were preincubated under dry conditions when compared to soils preincubated under wet conditions. ⺠The observed time patterns of N2O and N2 suggested a nonhomogeneous distribution of nitrate and denitrifier activity in the incubated soil. ⺠The time courses of δ15N-N2O, δ18O-N2O and Site Preference (SP) varied in line with the observed N2O and N2 emissions supporting the existence of multipools of nitrate. ⺠Isotopic fractionation modelling of the δ15N of emitted N2O, during the time series confirmed it being derived from multipools of nitrate. ⺠Manipulating the timing of fertiliser application according to antecedent moisture conditions could be a potential mitigation measure for soil N2O emissions.
Related Topics
Life Sciences
Agricultural and Biological Sciences
Soil Science
Authors
Anja Bergstermann, Laura Cárdenas, Roland Bol, Lucy Gilliam, Keith Goulding, Ana Meijide, David Scholefield, Antonio Vallejo, Reinhard Well,