2.5. Statistical analysis
We used the Tukey-Kramer method to analyze significant differences in
the soil carbon component content and enzyme activity under different
vegetation types. A two-way ANOVA test was used to analyze the effects
of vegetation type and soil layer depth on the SOC components and enzyme
activities. The confidence interval was 95%, and P < 0.05 was
considered significant. The errors in the figures and tables of this
article are standard errors. The relationships between soil catalase,
sucrase, amylase, urease and soil carbon fractions were analyzed using a
Pearson correlation analysis.
3. Results