2.4 Statistical analysis
The relationship between GRSP and biochemical features was assessed in SPSS 20 (IBM, Inc., Armonk, NY, USA). One-way analysis of variance (ANOVA) and Tukey’s HSD tests was used to compare the variations in soil GRSP and biochemical properties among the five grazing successive stages and nutrient addition treatments. The figures were mapped using Sigma Plot 12.5. Redundancy Analysis (RDA) was conducted using Canoco 5.0.