Vegetation and trees in Amazonian ecosystems influence soil chemistry. Understanding these effects is essential for selecting the right tree species in silvopastoral systems to promote soil conservation. The objective of the study was to evaluate the effect of different silvopastoral systems (SPS) on the soil chemical properties within a livestock system. The research was developed at the Estación Experimental Agraria El Porvenir in San Martín Department, Peru, which is characterized by a humid tropical climate, with an annual temperature of 33°C, humidity levels between 70 and 80%, and precipitation of 1,225 mm. Six SPS [Bolaina (Guazuma crinita Mart.), Teak (Tectona grandis L.), an arboretum, Pucaquiro (Sickingia tinctoria Schult.), Quinilla (Manilkara bidentata A. DC.), and a natural forest - NF] and two sampling depths were compared, with two replicas for each. The main effect sho...