ATUALIZAÇÃO DA CLASSIFICAÇÃO DO MAPA DE SOLOS DA PARAÍBA

Abstract

In relation to climate, geology, among other factors of the environment, the soil is considered as a great natural resource for the stratification of environments. Knowledge about the geographic distribution of soils is fundamental for environmental planning and important for subsidizing the creation of public policies for use and preservation management, since it is a natural resource of slow renewal. The objective of this research was to update the soil classification of the Exploratory Map-Recognition of soils of the state of Paraíba. This update was carried out by means of the classification of 196 soil profiles available in the Exploration-Reconnaissance Survey of Soils of the State of Paraíba (1972) and in the Agricultural Zoning of the State of Paraíba (1978). All the profiles were analyzed according to criteria in the Brazilian Soil Classification System (2013) by analyzing their morphological properties and physical, chemical and mineralogical attributes. The map was made using the Digital Soil Mapping (MDS) tool, using a Digital Elevation Model (MDE) to obtain the slope with their respective morphometric classes as well as the lithological information contained in the geological map of Paraíba, in addition to finding the probable location of the same using the location information of the profiles. Finally, the soil map of the state was obtained with symbologies, captions and colors as proposed in SiBCS (2013).