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| Titel |
Simulation of N2O peak emissions on peat soils with SWAP-ANIMO |
| VerfasserIn |
P. C. Stolk, R. H. A. Hendriks, C. M. J. Jacobs, H. Weststrate, J. Duyzer |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250021259
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| Zusammenfassung |
| Nitrous oxide (N2O) is a very strong greenhouse gas, with agricultural soils as its main
anthropogenic source. Various management practices, like fertilization or tillage, can give rise
to pulses of N2O emissions. In spite of their short duration, in the order of a couple of
days to weeks, these pulses can constitute major part of total annual nitrous oxide
emission. Understanding, predicting and ultimately mitigating these pulses poses
a considerable challenge. N2O is mainly produced by nitrifiers and denitrifiers.
These require different conditions with respect to aerobicity and available mineral
N.
Simulation models offer a promising tool to test and further develop process knowledge on
N2O production and -emission. SWAP-ANIMO is a process oriented biogeochemical model,
originally developed for the simulation of nitrate leaching, that has recently been extended
with an N2O module. It includes production and consumption of N2O by denitrification,
production of N2O by nitrification and transport by diffusion and convection in the soil water
and soil air.
Here we present the validation of N2O surface flux simulations, with daily measurements of
fluxes from grassland on peat in The Netherlands. As a first step to evaluate the simulation of
the processes in the soil, we compare observed and simulated soil N2O concentration profiles. |
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