Estudio de la materia orgánica de andosoles del Macizo Central francés y de Tenerife

Abstract

Sucesive extractions of organic matter with several reagents, followed by systematic observations with electron microscope, allowed us to suggest a balance of the biochemical evolution of organic matter in andosols. The organic matter separation by physical chemical methods have permitted us to obtain a greater knowledge of the dinamic of humification in andosols. We have studied the distribution of the humification in the three main humic fractions: fulvic + humic acids. soluble humin after suitable treatment and unsoluble humin.