published by the instituto estadual de ambiente - inea (rio's state institute for the environment), this map shows recent reforestation efforts in the state of rio de janeiro. 

made available by the instituto chico mendes de conservação da biodiversidade - icmbio, on this page there is a searchable map - by entering the name of a natural reserve, a close-up map is displayed.

published by the instituto brasileiro de geografia e estatística - ibge, the high-resolution map on this link shows the vegetation in brazil, including rio de janeiro at the time of colonization.

also available through the instituto brasileiro de geografia e estatística - ibge, the high-resolution map on this link shows the biodiversity in brazil, including rio de janeiro at the time of colonization.