ANÁLISE MULTIVARIADA NA DISCRIMINAÇÃO DE SOLOS COM HORIZONTE B LATOSSÓLICO E B TEXTURAL

Abstract

Besides grouping strategies UPGMA, techniques of grouping analyses (Sneath & Sokal, 1973) and principal components (Morrison, 1967) were used for soil discrimination with Latosolic B and Textural B horizon from studies on drainage web and relief obtained by aerial photographs and TM/Landsat satellite images in the Ribeirão Santo Antonio basin, in the western part of the State of São Paulo, Brazil.The following conclusions were obtained: 1) the joint employment of aerial photographs and satellite image proved the efficiency of the first item. Although images maybe used, in the case of studies involving cartographical updating and thematic maps, studies on quantitative data shich could be obtained are indispensable (an aspect related to the geometric conditions of image acquisition and the quality (reliability) of the product); 2) in the outline for drainage web of areas where Latosols occur photographs and images are efficient to the detrimentof the latter with Podzolic (Udalfs) soil; 3) the utility of the dra inage web and relief was proved by visual interpretation of aerial photographs and satellite images and 4) drainage density, number and total length of river segments and average declivity showed themselves to be sensitive in the separation of soils.