DRYELA RIBEIRO LEITE
Abstract:
The sustainability of the productive capacity of a soil is due to the type of land use and management system, making it it necessary to adopt practices and technologies that aims to continue the rational and long-term exploitation of its resources. Aimed to evaluate the soil attributes of a quartzarenic soil and its ability to sequester carbon under biodiversity systems for two consecutive years. Chemical, physical, biological and carbon sequestration capacity of six different land use systems were evaluated: four Agroforestry Systems, a consolidated no-till system and a well-preserved native forest area. Soil samples were collected at depths of 0-5 cm, 5-15 cm, 15-30 cm and 30-50cm for chemical, physical and carbon analyzes in soil and at 0-10cm depth for microbiological analyzes. The data were submitted to variance analysis and 5% Scott-Knott test, and as complementary analysis the multivariate canonical analysis technique and the Tocher clustering method were used. SAF4 was the most promising system in terms of the characteristics evaluated. The management of this system favored soil fertility even though it was extremely sandy and did not compromise soil structure, provided greater efficiency of microbial biomass, higher nutrient cycling, organic matter production, humidification and carbon storage capacity, the system that presented the best results for the evaluated soil physical characteristics.
