Influência do uso do solo nos atributos físicos e no estoque de carbono

Abstract

The forms of land use, together with the forms of management are factors that influence and change the attributes of the soil, which may promote an increase or decrease aggregate stability, porosity and carbon storage in soil. This study is justified by the need to obtain information about the influence of different types of land use application in Campus Neighbors Two, the physical properties and the carbon stock. This study was conducted in the areas of Federal Technological University of Paraná-campus Two Neighbors. For the evaluation we selected four distinct areas of land use, which were an area with pasture (PAST), Araucaria forest area in middle stage of regeneration (MATA), area with annual crops (LAV), area of forest plantation eucalyptus 10 years of age (EUC). The variables analyzed were: geometric mean diameter (GMD) of aggregates, porosity, density, carbon storage and physical fractionation grain size. The system use and management of treatment MATA had the highest aggregate stability, porosity, macroporosity compared to other treatments, besides having lower density. Past treatment had the highest percentage of microporosity between treatments. The system use and soil management with PAST was responsible for greater accumulation of total organic carbon (TOC) and 25% of this carbon is in particulate organic carbon (POC). Treatment LAV, had the lowest accumulation of TOC. Treatments and MATA EUC had intermediate values, both of which had 68% of its carbon associated with minerals (CAM). In the treatment kills 35% of carbon is in the COP.