The hydrolytic C-degrading enzyme b-glucosidase had lower activity in the old plantation soils compared to the
young plantation soils but the forest treatment was not significantly different from either of the plantation treatments
(Table 3). b-xylosidase and cellobiohydrolase activities did not differ among the treatments. The sampling time
within the management cycle (bare vs. mature plant) had no effect on any of the hydrolytic enzymes. Total cellobiohydrolase and b-xylosidase activities were significantly correlated with %C and %N (P , 0.05) but not significantly
correlated with microbial biomass. b-glucosidase was not significantly correlated with %C, %N, or microbial biomass.
Total b-xylosidase activity was also correlated with available S (P , 0.05).