N2O emissions and nitrogen transformation during windrow composting of dairy manure

摘要: Abstract Windrow composting involves piling and regularly turning organic wastes in long rows, being the succession of static standing periods between two consecutive pile turnings as well a period turning. N 2 O emissions transformation were investigated during processes windrow composting. In contrast to conventional understanding, we observed that concentrations inside compost materials significantly higher after (APT) than before (BPT). Pile triggered burst production rather simple gaseous escape from stirred compost. Denitrification was dominant pathway because NO − 3 lower APT compared BPT. The sudden exposure severely inhibited reductase, which can block thus caused an increase emission. As rose following 48 hours, nitrification dominated did not cause surface emissions. Thus, resulted dramatic conversion strongly influenced its flux size. It also found high accumulated had strong correlation with Practical methods regulating nitrite frequency would be useful mitigate manure