2024-10-222024-10-222019-02-15SOUSA, Bruna Stefanny das Neves. Indicadores de qualidade do solo sob efeito de sistemas agroflorestais no município de Tomé-açu, Pará, Brasil. Orientador: Manoel Tavares de Paula. 2019. 71 f. Dissertação (Mestrado em Ciências Ambientais) - Centro de Ciências Naturais e Tecnologia, Universidade do Estado do Pará, Belém, 2019.https://portaldaposgraduacao.uepa.br/handle/riuepa/222Conselho Nacional de Desenvolvimento Científico e Tecnológico - CNPqAbertoSoloIndicadores de qualidadeSistemas agrícolasMeio ambienteBioindicadoresQualidade do soloProdução AgrícolaAmazôniaBioindicatorsSoil qualityAgricultural productionAmazonDissertaçãoCiências AgráriasThe soil quality indicators are effective mechanisms for assessing the physical, chemical and biological status of soil, altered or degraded areas, different land use practices, such as agricultural production. However, Agroforestry Systems (SAFs) have been considered sustainable agricultural models, attributed to their benefits for the maintenance and preservation of soil quality. Agroforestry Systems (SAFs) have been relevant as sustainable forms of land use, attributed to their benefits for the maintenance and preservation of soil quality. The existence of different types of SAFs in the world requires studies that can prove their different contributions to soil quality. In view of the above, the present study had the objective of analyzing the soil quality in areas with agroforestry systems, using as a control the secondary forest, in the Municipality of Tomé-Açu, Pará, Brazil. For this, the following evaluation indicators were used: microbial carbon (Cmic) and microbial nitrogen (Nmic) of soil biomass, soil temperature, organic carbon (CO), nitrogen (N) and C / N. The experimental design adopted in this research was subdivided blocks, with five areas studied (four agroforestry systems and one secondary forest area), three depths of collected samples (0-10 cm, 10-20 cm and 20-30 cm) and three replicates. It was verified that the contents of Cmic and Nmic were higher in FLO area, at depths of 10-20 cm and 20-30 cm, respectively. Also, in this environment was observed a lower temperature in the superficial region of the soil, possibly due to the greater amount of organic residues accumulated during the time. The highest levels of CO, N of soil and C / N ratio were obtained in the 0-10 cm layer in FLO area, decreasing with depth increase. However, in older SAF environments, the variables analyzed were similar to the FLO area, indicating the feasible practice to improve soil quality.PPGCA - Estudos de ecossistemas amazônicos