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