Effects of suspended sediments on N2O production and emission in aquatic nitrogen cycling
A variety of natural or anthropogenic factors in natural waters can lead to the resuspension of sediments and the formation of suspended sediments.Suspended sediments are characterized by large specific surface area and strong adsorption performance,and therefore play a key role in the nitrogen production and emission,especially in the process of production and emission of the potential greenhouse gas N2O.This problem has become a new hotspot of research.This paper systematically reviewed the affecting factors of N2O production and emission in nitrigen cycling,and comprehensively summarized the effects of suspended sediments concentration,particle size and component on N2O production in nitrogen cycling.It is suggested that in the future,the influence factors and mechanisms of suspended sediments on N2O production should be explored in depth;the research on N2O production monitoring,and abatement and reduction models should be established.The aim is to provide a theoretical basis for further controlling nitrogen pollution in waters,improving the mechanism of N2O emission,and formulating a greenhouse effect elleviation strategy.
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