Evaluation of seasonal variability of soil biogeochemical properties in aggregate-size fractioned soil under different tillages

摘要

An augment of soil organic matter (SUM) in agricultural lands is mandatory to improve soil quality and fertility and to limit greenhouse gases emissions. A better protection of SUM from degradation is seconded to its inclusion in aggregates and to the formation of organo-mineral interactions with the clay fraction within the soil matrix. Under Mediterranean conditions, conservation agriculture (CA) has been widely related with macro-aggregates formation, SUM protection, and to an improvement of soil fertility and crop yields.