With the objective of verify the remainders influence of ciliary vegetation and of the human action on the water quality, four springs were studied, with two springs on presence of remaining natural vegetation and two springs with agricultural activities predominance. These springs are part of Córrego Rico watershed, being located in the municipal districts of Taquaritinga and Guariba, São Paulo State, Brazil, in two classes of soil: argisoil and latosoil, respectively.
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Library ResourceArticles et Livresdécembre, 2005Brésil
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Library ResourceArticles et Livresdécembre, 2005Espagne
The SIAT is a specialist system for Land Evaluation derived from the MicroLEIS - Land Evaluation Information System developed in Spain. In its first version the 12 variables were adapted and adjusted for tropical conditions as well as the program structure and databank. In that time the field tests showed that the best results were obtained for scales near 1:100.000. In this second version the ranges for each variable were redefine and a communication interface with the GIS IDRISI was introduced, which allowed the exchange of data between the two programs.
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