Decomposição de serapilheira e biomassa microbiana do solo em ecossistema de referência como subsídio a restauração ecológica

Abstract

The serraplilheira has been widely used as an environmental bioindicator, since it plays a fundamental role in the nutrient packing along with the microbial biomass of the soil, which is a direct agent of the soil, both of which mediate soil nutrient availability. sustainability of ecosystems. The objective was to evaluate the soil quality of three topographic gradients in the Serra da Bodoquena National Park, through litter decomposition velocity and soil microbiological attributes. The experiment consisted in collecting the litter and soil in three topographic gradients in the southern portion of the Serra da Bodoquena National Park for litter bag decomposition analysis and carbon analysis of biomass and microbial activity, metabolic quotient and microbial quotient and also chemical analysis of soil nutrients. However, there was only a statistically significant difference in relation to the top, which had the lowest decomposition rate, and in the chemical analysis of soil nutrients the pH was between 7.0 and 8 , 0 showing a basal soil with base saturation (V%) between 93 and 95 demonstrating that the soil is fertile, and in the microbial biomass the slope obtained the best results in the carbon and microbial activity and the metabolic and microbial kernels were better at the top . Thus, the nutritional and organic quality of litter influenced the activity of microbial biomass.