GHG emissions response to the natural solar radiation

Abstract

N2O, CH4 and CO2 are a potential greenhouse gas (GHG) contributing to climate change, therefore solutions have to be sought to reduce their emission from agriculture. This work evaluates GHG emission from grasslands submitted to different fertilizing management. GHG fluxes were evaluated during vegetation period (June-September) in two experimental sites, namely semi natural grassland and cultural pasture (intensively managed) in the Training Farm of the Aleksandras Stulginskis University. A simulation of multi-criteria assessment of sustainable fertilizing management was carried out on a basis of ARAS method. Consequently, agro ecosystems of cultural pasture (N180P120K150) and semi natural grassland fertilizing rates N180P120K150 and N60P40K50 were evaluated as the most sustainable alternatives leading to reduction of emissions between biosphere-atmosphere and human induced biogenic pollution in grassland ecosystems