Basal soil respiration in land use and cover systems in a caatinga enclaves moist forest

Deforestation and the disorderly exploitation of natural resources for agricultural expansion occurred at an accelerated pace in Brejo microregion state Paraíba, Brazil, which resulted abandonment erosion soil a large part region. In view this scenario, present study was undertaken to investigate respiration systems involving different forms land use cover caatinga enclaves moist forests (Brejo de Altitude areas). The conducted four systems, namely, pasture, mandala agriculture, agroforestry system, forest. Microbial activity estimated by quantifying carbon dioxide (CO2) released process, from surface, captured KOH solution. Soil temperature (°C) water content (%) were monitored simultaneously with analysis respiration. have direct effect on metabolic organisms, climatic factors such as moisture influence dynamics organic matter decomposition and, consequently, release CO2. production CO2 is higher night than during day, regardless analyzed systems. Among evaluated areas, forest showed lowest emissions, so it considered receptor contrast pasture area, functioned emitter. Management techniques that reduce surface increase should be prioritized promote biota.