The present work had as objective to evaluate the differences in the substratum after tin mining in an area of amazon forest. The samples were collected, superficially, in an area of tin mining in the National Forest of Jamari, State of Rondonia, along a transect with: forest, forest regrowth, mining floor, dry tailing and moist tailing. In each situation 5 samples were collected, considered replicates, in a total of 25 samples. In the collected samples, physical and chemical analyses were accomplished. The obtained results allowed concluding that the process of tin extraction promoted significant alterations in the properties of the studied soils. Organic matter and P contents, bulk and particle density and resistance to penetration were the most affected by the processes of suppression of the original vegetation and tin extraction.
degraded area; recovery; soil; mining
