In the recent years، increasing of Green House Gases، degradation of environment، deforestation alongside with the limitation and decreasing of ecological foot print of the earth for supplementation of human needs are the main problems of the world. The Carbon Dioxide gas as a main factor of world climate change، carry out the 60 percent of the global heating or greenhouse effect. The main source of the carbon dioxide is the oil and its products which used for the production of power in the urban and rural areas. The over use of these energy sources lead to ecological and environmental problems. The researches show that the forestry and greenery is one of the suitable ways to dealt with the green house problems. The aim of this research is to calculate the amount of Green Space for the absorption of the co2 resulted from fossil fue