in addition, these enzymes are highly sensitive to TEs, and thus the Tes immobilisation provoked by the amendments could also influence on their increase ( as shown by the negative the correlations found between cellulase activity and available TEs concentrations)
however, the OM and nutrients supply by compost and pig slurry, instead of TEs immobilisotion, seemed to be the main factor affecting enzyme activities, as shown in the PCA2