Remarkable N₂O emissions by draining fallow paddy soil and close link to the ammonium-oxidizing archaea communities.

ABSTRACT: Fallow paddies experience natural flooding and draining water status due to rainfall and evaporation, which could induce considerable nitrous oxide (N₂O) emissions and need to be studied specially. In this study, intact soil columns were collected from a fallow paddy field and the flooding-draining process was simulated in a microcosm experiment. The results showed that both N₂O concentrations in the soil and N₂O emission rates were negligible during flooding period, which were greatly elevated by draining the fallow paddy soil. The remarkable N₂O concentrations in the soil and N₂O emission/h during draining both had significant relationships with the Arch-amoA gene (P < 0.01) but not the Bac-amoA, narG, nirK, nirS, and nosZ genes, ind

SUBMITTER: Wang L 

PROVIDER: S-EPMC6384938 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature