ESTOQUE DE CARBONO E CLASSES DE CAPACIDADE DE USO DAS TERRAS DA PROPRIEDADE JARDIM, ÁREA EXPERIMENTAL DO CCA – UFPB

Abstract

The carbon present in the soil is a very important property, which is directly related to the emission of greenhouse gases, global warming mitigation, fertility and soil quality. In addition, it is a property that transmits information on soil quality in general, including data on soil chemistry, physics and biology. The two toposequences studied are composed by the taxonomic units: Argissolo, Gleissolo Latossolo, Neossolo and Planossolo. The soils of the study area are predominantly dystrophic, with the Argissolo being the soil class that predominates in Propriedade Jardim. The classification of land use capacity aims at obtaining higher yields and reducing, at acceptable levels, their wear and impoverishment, where it is very important to determine the most rational use and management of the land, being feasible to know the various attributes involved, carried out through of a survey of the physical environment. The objective of this work was to estimate the carbon stock of two toposequences of soils and to classify the land use capacity of Fazenda Jardim, located in the city of Areia - PB. The results showed the marked presence of preserved and deep horizons such as the presence of Humic A and Prominent A, and the following values were verified for the carbon stock of the two toposequences. Top I, P1 (248.20 Mg ha-1), P7 (167.86 Mg ha-1), P8 (107.58 Mg ha-1) and P10 (107.52 Mg ha-1). P15 (172.09 Mg ha-1), P5 (162.85 Mg ha-1), P12 (206.69 Mg ha-1), P15 , 38 Mg ha-1). The current land use practiced in the Garden Property is adequate, with the land capacity identified from the physical attributes of the study area, within the property varying between I, II, III and IV, with highlight on Class III in areas of Argissolos occupying the largest physical area of the property.