Edaphic respiration in an ecosystem submitted to surface soil transposition in the Caatinga

Abstract

The research aimed to evaluate the potential of the soil transposition technique in the restoration of a degraded area in the Seridó Desertification Center, through the analysis of edaphic respiration. Seven areas from different microregions of the semi-arid region of Paraíba were selected for soil transposition and allocation to a degraded area. The design was in randomized blocks, consisting of eight treatments: one referring to the control (degraded area) and the others, to soils transported from conserved areas in microregions, and four blocks, totaling 32 experimental units. Monthly analysis of soil respiration measured by absorption of CO2 with the KOH solution was carried out. With the exception of the soil from the Sousa microregion, all soils transported from the other microregions presented CO2 values ​​higher than those of the degraded area, demonstrating that the soil transposition technique is efficient for this variable.

Keywords

• brazilian semiarid
• ecological restoration
• microbial activity