Liberação de CO2, CH4 e N2O de pastagem em região tropical.

Pastures are considered one of the main ecosystems in the world, of great importance in many regions with a tropical climate. The transformation of natural systems into cultivated pastures contributes to an increase in the concentration of greenhouse gases (carbon dioxide, methane and nitrous oxide) in the atmosphere, with an influence on climate change. Within this approach, this review reports the possible contribution of cultivated pastures to the emission of greenhouse gases. Inadequately managed pastures have stimulated nutrient losses from the soil and the deforestation of new areas of native vegetation for the implantation of new pasture areas, generating environmental impact by acting in the emission of greenhouse gases. However, when properly managed, pastures have a high potential for offsetting greenhouse gas emissions, given that they can significantly emit less methane and store more carbon and nitrogen in plants and soil. [ABSTRACT FROM AUTHOR]