3.1. Soil chemistry characteristics at the forested sites
Soil chemistry characteristics at the two sites were shown in
Table 1. No significant difference in soil pH between Emei Mountain
and Gongga Mountain was observed. However, BS and CECe in Emei
Mountain were significantly lower than those in Gongga Mountain.
BS and cation exchange capacity (CEC) are widely considered as
efficient indices for evaluating the acidification process (Derome
and Lindroos, 1998). Dai et al. (1998) conducted a study in