Greenhouse gas emission during swine manure aerobic composting Insight from the dissolved organic matter associated microbial community succession

Therefore, to explore the key factors influencing the release of greenhouse gas emissions during composting, the inaction of organic matter conversion, greenhouse gas emissions and bacterial community structure during co-composting with different ratio (pig manure and corn straw) over a 6-week period was studied.

The excitation-emission matrix fluorescence spectroscopy with the parallel factor was used to identify that dissolved organic matter associated microbial community succession mainly influenced greenhouse gas emissions. Protein-like fractions of dissolved organic matter were more likely to decompose and promote CH4 and CO2 emissions, while the humic-like fractions of dissolved organic matter positively affected N2O emissions.