Variabilidade sazonal do efluxo de CO2 no solo em diferentes coberturas vegetais na região sudoeste da Amazônia

Abstract

The Amazon Biome has been suffering in recent years with changes in land use, emitting indiscriminate de CO2 from the soil into the atmosphere, CO2 is one of the gases that cause the greenhouse effect on the planet. This emission directly affects the global climate, as well as indirectly the local climate determined in the region. In this sense, the monitoring of soil ECO2 in different vegetation covering becomes useful to verify the impact that the use of the soil can cause in the emission of this gas. The objective of this work was to verify the seasonal variability of ECO2 in different vegetation covering in southwestern Amazon. The ECO2 data were obtained using the methodology developed by Grisi in 1978, which consists of an acid-base titration, temperature with the aid of a skewer thermometer, moisture by the gravimetric method, carbon by means of an oxidation-reduction reaction, density and porosity with the help of a volumetric cylinder. It carried out an analysis and comparison with different seasons of the year, where it was possible to verify that the AFS had the best balance between the inflow and outflow of CO2 during the interaction with the biosphere- atmosphere, with the carbon almost constant throughout the interaction of the different seasons. The carbon ACC is reflected in the soil attributes of its difference and the carbon station in the region. ACN and ACA were the areas that will emit less CO2 into the atmosphere, due to the lower carbon input in their soil.