The nitrogen is a macronutrient essential for the functioning of the metabolism of living beings. However, due to the changes that the planet has been passing in the Anthropocene, the nitrogen cycling has been altered. Deforestation combined with changes in land use are primarily responsible for the change in their cycling. Emissions of greenhouse gases such as N2O were increased due to this deforestation and inadequate soil management practices, and this contributed to the fact that these changes in nitrogen cycling occurred. Considering the importance of nitrogen and the changes that it has undergone in the last decades, this work of revision aims to describe the role of nitrogen and the changes in its cycling due to the processes of land use change that occurred in the Anthropocene in forest areas tropical and eucalyptus plantations in Brazil.