Nitrous oxide (N20) has recently become the subject of intense research and debate, because of its increasing concentrations in the atmosphere and its known ability to deplete the ozone layer and also to contribute to the greenhouse effect. There are both natural and anthropogenic sources for N2O...
However, extrapolation to the national level showed that sewage sludge could only be a minor source of nitrous oxide, since the amounts of sewage sludge are too small to give rise to any considerable fluxes compared with other sources. Nitrous oxide emissions from sewage sludge are comparable to...
Emissions of nitrous oxide (N2O) from soil generally represent a very small fraction of the annual input of N cycling within unmanaged or farmed soils. However, these emissions play a major role in the chemistry of the atmosphere on regional and global scales. The interest in N2O centres on ...
Tropical forests and savannas are important sources of atmospheric N2O and NO, but rapid land use change could be affecting these soil emissions of N oxide gases. The five published estimates for annual emissions of N2O from soils of mature Amazonian forests are remarkably consistent, ranging from...
The uncertainty related to both sources is very high, due to the scarcity of data and low frequency of sampling in tropical studies, especially for the African continent. The principal objective of this work was to quantify the annual budget of N2O emissions in an African tropical rain forest....
Nitrous oxide (N2O) emissions from a typical full-scale tertiary municipal wastewater treatment plant (WWTP) in northern China were investigated during spring and summer of 2010. Results showed that the major emission sources of N2O performed the following descending order: oxic tanks, final ...
2012. Nitrous oxide emissions respond differently to mineral and organic nitrogen sources in contrasting soil types. Journal of Environmental Quality 41, 427-435.Pelster, D. E., Chantigny, M. H., Rochette, P., Angers, D. A., Rieux, C., & Vanasse, A. (2012). Nitrous Oxide ...
It is estimated that the world-wide N 2 O emitted directly from agricultural fields as a result of the deposition of all the above nitrogen sources is 2–3 Tg N annually. This amounts to 20–30% of the total N 2 O emitted annually from the earth's surface. An unknown, but probably...
to evaluate the impact of N fertilizer source and application rate on NO emissions. Treatments consisted of three sources of N fertilizer (urea–NHNO32% [UAN], Ca–NHNO[CAN], and aqua NH[AA]) at four different rates (0, 100, 150, and 200 kg N ha). Fertilizers were banded 5 cm ...
Determination of the bacterial processes which are sources of nitrous oxide production in marine samples Partial denitrification and the initial step of nitrification are the main biological processes which produce nitrous oxide. In order to determine the cont... P Bonin,C Tamburini,V Michotey - 《...