At a municipal level it was required to determine the course of environmental action that would respond to international directives regarding air quality control through interference in carbon dioxide movement. Two options were considered, namely bio-fuels and ecological compensation. The bio-fuel option was examined by way of ethanol produced from sugar cane. The compensation option was examined by way of the creation of a petroleum forest that would capture fossil fuel derived carbon dioxide. It inquired into the tree population needed to make the compensation theory work in practice. Worldwide scenarios were established, from which ideas for local administrations were then derived. The carbon dioxide cycle for ethanol was shown to close. To achieve complete ecological compensation, it was found necessary that each person plant 37 trees every 20 years. The arable land required was estimated as 4.0 and 2.5% of the globally available area for the two options, respectively.