Risco de salinização das terras do baixo Acaraú (CE)

Abstract

Certain conditions of relief, climate and use can lead to the formation of saline and sodic soils, also called salt-affected soils. With a view to establish guidelines for management practices and land use in the region of Baixo Acaraú, Ceará, the purpose of this work was to generate a map of salinization risk. To classify levels of vulnerability, the pedology, geology, geomorphology and land use/cover were evaluated as well as slope altimetry information, treated in a GIS environment with an additive multi-criteria method. Four classes of salinization risk were defined: soils with naturally low, moderate, high, or very high salinity/sodicity. It was found that the risk of salinization was low in 35.47% of the area, moderate in 26.22%, high in 8.23% and very high in 19.65%.