Agrofloresta: eficiência na promoção e sequestro de carbono no solo na sazonalidade no ecótono cerrado-caatinga

Abstract

As the population grows, the emission of gases that cause the greenhouse effect increases, including carbon dioxide (CO2), due to the consumption of fossil fuels, deforestation and agricultural activity, altering the balance of ecosystems and accelerating climate change. However, Agroforestry Systems (SAF's) emerge as a sustainable alternative for the environment with: sequestration, fixation and maintenance of carbon in the soil, preservation and conservation of ancestral cultivation processes, integrating environmental, economic and social preservation through the optimization of production, integration of production cycles, agricultural cultivation, animal husbandry, woody and fruit species. Therefore, this work aimed to confirm the fertility and efficiency of an agroforest in promoting the sequestration and maintenance of carbon in the soil in a seasonal period in the cerrado-caatinga ecotone, rural area of Teresina - PI, comparing the results to a survey carried out in the previous year. To this end, samples of litter, density and simple soil were collected and analyzed in a seasonal period in the SAF and in the Morro do Preá Native Forest. The analyzes point to the efficiency of SAF Morro do Preá in promoting and sequestering carbon on the surface with the contribution of organic residues, micronutrients and exchangeable bases that interact to provide an environment with nutritional quality, an optimal pH and low acidity. Reaffirming the functionality and viability of SAF's in conserving soil quality through the maintenance of physical, chemical and biological attributes in the supply of organic matter even under the influence of climate change.