The soil pH of the 0–20 cm layer was approximately 3.9 ± 0.1
and showed no change over the two rotations. There was no significant
effect of site management on the soil pH in this layer (data
not shown). When the 0–5 cm soil layer was considered, a signifi-
cant, but temporary, increase in pH was observed with forest residue
burn. Soil organic carbon (SOC) ranged from 6 to 13 g kg1
, and
the N ranged from 0.5 to 0.9 g kg1 in the 0–20 cm soil layer