Short Essay on Tropical Deforestation
In tropical forests as much as 50% of the original extent may have been lost to deforestation in the last two decades, primarily as a result of agricultural expansion. Global estimates of tropical deforestation range from 69,000 km2 year in 1980 to 165,000 km2 year in the late 1980s; 50 to 70% of the more recent estimates have been attributed to deforestation in the Brazilian Amazon, the largest continuous region of tropical forest in the world (Skole and Tucker, 1993).Tropical deforestation is a major component of the carbon cycle and has profound implications for biological diversity. Deforestation increases atmospheric CO2 and other trace gases, possibly affecting climate. Conversion of forests to cropland and pasture results in a net flux of carbon to the atmosphere because the concentration of carbon in…