Current trends in the research on soil changes due to deforestation,burning and cultivation in the Brazilian tropics |
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| Authors: | F. G. Andreux C. C. Cerri |
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| Affiliation: | Centro de Energia Nuclear na Agricultura USP ORSTOM‐CNPq and BRA 0010‐IAEA Agreements , CP 96, Piracicaba , SP , 13400 , Brazil |
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| Abstract: | The effects of large‐scale destruction of the tropical forest on soil characteristics are presented, with emphasis on the Amazon Basin. Human activities progressively modify natural equilibrium in soils and streams, especially in Brazil, where about 25 000 km2 of virgin forest are annually removed. Of the soil uses, the installation of annual crops and pastures in previously clear‐cut and burned areas is the main subject of this paper. |
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| Keywords: | Estuary trace metal pollution sediment grain size effect metal speciation |
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