ABSTRACT.


RODRIGUEZ ZAPATA, MANUEL Y DIAZ VIAL, CARLOS, M. Sc.1
 

The results from an erosion survey done on three Provinces of Chile are analysed. The natural vegetation shows an equilibrium among climate and land use capability, also it protect the soils again the erosion development. Local dry farming practices through a wrong system of work is a important factor that helps soil erosion. Topography by itself is the most important factor on soil erosion development. Among the geological factors that helped the formation of the soils here considered, it was observed that on base of the same conditions, the granitic soils are the most eroded one; followed by the red clayey soils of the first glaciations; also, but on a minor importance are followed by trumaos soils (loes of a volcanic origin). Among climatic factors a narrow distribution of rainfall it offers a great danger of erosion.

Keywords:
1 Ingenieros Agronómos, Sección Conservación de Suelos, Depto. Investigaciones Agrícolas.