Evaluación de la actividad microbiana mediante la cuantificación de la respiración edáfica en la parroquia San José de Poaló, provincia de Tungurahua

Abstract

The objective of this study was to evaluate the microbial activity by quantifying the edaphic respiration in the Initial study soils (flooded moorland grasslands, moorland grasslands and agricultural), and the sampling points were identified using ArcGIS. For the respiration analysis

in triplicate by the Anderson (1982) and OxiTop method, soil samples were taken at a depth of 0-30 cm, as well as for the determination of pH, electrical conductivity, humidity, density, organic matter, carbon and nitrogen. Resulting in the average edaphic respiration for the floodplain grasslands of the moor (3911 masl.) In natural soil by the Anderson (1982) method, 1.79 C-CO2 mg/g, while by the OxiTop method, 0.08 C-CO2 mg/ g; in dry soil by the Anderson (1982) method, 2.36 C-CO2 mg/g, while by the OxiTop method 0.12 C-CO2 mg/g. In the grassland soil of the moor (3753-3698 masl.) Analysed in natural soil by the Anderson (1982) method 0.66 C-CO2 mg/, while by the OxiTop method 0.16 C-CO2 mg/g; in dry soil by the Anderson (1982) method 1.63 C-CO2 mg/g, while by the OxiTop method 0.13 C-CO2 mg/g. Finally, the agricultural soil (3114 - 3008 masl.) analysed in natural soil by the Anderson (1982) method 0.96 C-CO2 mg/, while by the OxiTop method 0.12 C-CO2 mg/g; in dry soil by the Anderson (1982) method 0.71 C-CO2 mg/g, while by the OxiTop method 0.95 C-CO2 mg/g. Thus, concluding that edaphic respiration is influenced by the physicochemical properties, C/N, humidity, density and altitude. It is recommended to conduct investigations about edaphic respiration in soils of the burned moor and healthy soils at different altitudes.