We hear much of the less of tropical forests in the Amazon, and indeed the "deforestation arc" now extends from the southern periphery of the Amazon well into the north. Socioeconomic issues and approaches to them are domestic issues for the Brazilian government to address. When framed in terms of emissions, this shift from forest to farmland has direct and indirect effects, most notably a gasification of existing biomass, a suspension of annual carbon dioxide fixation, and a release of emissions from the soil to the atmosphere. In this research, we measure such phenomena so as to provide information for devising measures to brake them.