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Published on: January 16, 2014
[Effect of grazing on microbiological processes of N2O production in grassland soils]
1Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China.
Abstract:
A laboratory incubation study on effect of grazing on microbiological processes of N2O production in Aneurolepidium chinese grassland soils by using the acetylene-inhibition method was firstly conducted and the seasonal variations of related bacteria groups and N2O fluxes were analyzed. Results suggested that grazing behavior altered the soil structure which were benefit to microbiological denitrification so that N2O emission from this steppe soil was reduced. It was the heterotrophic nitrification that is the key microbiological process for N2O production in the non-grazing and grazing semi-arid typical grassland soils in Inner Mongolia. The reasons why N2O flux from Inner Mongolia semi-arid typical grassland soils was lower were also explained in this paper.
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