The earth's climate is continuously changing due to various factors among which humanrninduced activities like emissions from deforestation, fossil fuel burning, etc. are the dominantrnones. Responses to this concern have focused on reducing emissions of greenhouse gases,rnespecially carbon dioxide, and on measuring carbon absorbed by and stored in Forests, soils,rnand oceans. One option for slowing the rise of greenhouse gas concentrations in thernatmosphere, and thus possible climate change, is to increase the amount of carbon removedrnby and stored in Forests. Forests play an important role in the global carbon balance; asrnboth carbon sources and sinks, they have the potential to form an important component inrnefforts to combat global climate change. In the last few years there has been an increasingrntendency to consider Forest ecosystems as possible sinks of carbon dioxide. In this way, it isrnattempted to mitigate the dramatic increase of global emissions of CO2 gas in thernindustrialized areas. Aboveground biomass was estimated by using allometric models whilernbelowground biomass was determined based on the ratio of belowground biomass tornaboveground biomass factors. The liter layer and soil organic carbon were estimated fromrnthe samples taken from the sample plot. Based on the result there were 909 trees in the studyrnareas with a DBH>5cm. The carbon stock in the different carbon pools were studied byrncollecting data in quadrat plots of 10 by 20 m distributed along transect line. The mean totalrncarbon stock of Metti Forest was found to be 319.2 t/ha (ranging from 230.96 to 581.9 t ha-1),rnof which 180.756 (109.7 to 408.2 t ha-1) was contained in the aboveground biomass, 36.15 trnha-1 (21.94 to 81.65 t ha-1) in belowground biomass, 11.15 (6.14 to 15.69 t ha-1) in litterrncarbon and 91.17 t ha-1 (76.18 to 102.79 t ha-1) was stored in soil organic carbon (0-30 cmrndepth). The carbon stocks in aboveground biomass, belowground biomass, litter biomass andrnsoil organic carbon exhibited distinct patterns along environmental gradients (altitude,rnaspect and slope gradient). Soil organic carbon stock showed an increasing trend withrnincreasing altitude while the aboveground, belowground and the litter carbon stock showedrnirregular patterns along altitude though statistically there was no strong relationshiprnbetween each of these carbon pools and altitudinal gradients. The aboveground carbon andrnsoil organic carbon in the present study Forest was higher than most tropical dry Forestsrnand within the range of tropical rain Forests, which imply the significance of Metti Forests ofrnEthiopia in the global carbon trade and thus climate change mitigation.rnKeywords; Forest, climate change, mitigation, Metti Forest, environmentalrngradients