Modelagem e espacialização do estoque de carbono de Cerrado Sensu Stricto em Minas Gerais

Abstract

Among the terrestrial biomes forests are major carbon sinks, however, knowledge about their actual inventories and how they are divided between the different matrices (trees, litter, roots and soil) are still far from being understood. This work aimed to quantify through field collections, different carbon stocks found in arrays of 5 fragments of cerrado Sensu Stricto of Minas Gerais, and through data collected in the field, adjust models to estimate the stocks carbon matrices in litter, roots and soil, as an independent variable using the dry weight of the matrix trees up to 3 cm in diameter. Later models were adjusted for spatial estimation of carbon stock, the cerrado Sensu Stricto vegetation type, found in nine sub-basin of the São Francisco. Of the four matrices analyzed the soil showed the highest carbon stock (69.9%), followed by the matrix trees (14.3%), roots (12.3%) and litter (3.5%). The mathematical models adjusted estimate, with strong, the carbon stocks of above matrices. Models were fitted spherical space for matrix roots, and the exponential model for other matrices. Using such models it was possible to perform kriging for the carbon stocks of different matrices for the cerrado Sensu Stricto of the whole sub-basin 9 SF, resulting in a total inventory estimated 83.016.973.21 Mg carbon.