Relação entre tipos de vegetação e fluxo de CO2 no Bioma Caatinga: Estudo de caso em Rio de Contas - Ba

Abstract

We present the results of analysis of CO2 fluxes over vegetation in the region of Rio de Contas - Ba. The work consisted of the following steps :) Theoretical review; b) Generation of a vegetation map through supervised classification of satellite image; and c) Integration and analysis of data by means of a Geographic Information System - GIS. Remote sensing provides a feasible and economical means to estimate the spatial and temporal dynamics of CO2 flux in vegetation cover. Vegetation indices derived from remotely sensed data, such as the Normalized Difference Vegetation Index (NDVI), have been correlated with CO2 fluxes. The methodology allowed to establish the gradient of vegetation class contribution in relation to the CO2 fluxes. The vegetation of caatinga answers for 65% of the biggest class of CO2 fluxes, demonstrating its potential for carbon sequestration.