Advances on Nitrous Oxide Emission from Grassland Ecosystem

Grassland ecosystem is the main terrestrial ecosystem. It has become one of the seriously destroyed terrestrial ecosystems, and grassland greenhouse gases emission has a great influence on the global climate change. Nitrous oxide (N2O) in atmosphere is a member of greenhouse gases, and it plays an important role in circulation of nitrogen in terrestrial ecosystem and constitutes a key method for nitrogen output. Based on domestic and foreign references, the aim was to overview the production mechanism and major influential factors of N2O in soil from grassland ecosystem. The major influential factors were soil temperature, soil moisture, soil organic matter, grazing and reclamation. Finally, the paper concluded that N2O emission from grassland ecosystem was the result of the interaction of many factors.