This study was conducted in the mesoregion of Agreste de Borborema, an area of 1404 ha corresponding to the Vaca Brava watershed - Areia City, State of Paraíba, Brazil. Three hundred and sixty soil samples (0-20 cm), representing combinations of four land uses and five positions in the relief were collected from the Vaca Brava watershed and its relationships were studied. The chemical components: carbon, nitrogen, phosphorus, potassium, calcium, magnesium, and pH were analyzed. Regarding physical properties, soil granulometry and density were analyzed. Descriptive analysis of soil density and pH showed the smallest variations. Phosphorus, potassium and magnesium presented the largest variations. Thus, chemical and physical properties revealed to be influenced by soil use, showing increasing values compared to agriculture-forest landforms, although available phosphorus presented opposite variation.
Agriculture-forest; Soil chemistry; Soil physical properties
