Fig. 5. Fungal community structure assessed by β-diversity
patterns using the principal coordinate analysis plots of Bray-Curtis
distances. Different shape represents exclusion or grazing soils and
color represents grassland types. E,exclusion; G,grazing; TD, temperate
desert; TS, temperate steppe; MM, mountain meadow. ANOSIM similarity
analysis was used to test the signficance between groups.
3.4. Correlation of grazing exclusion and grassland type with
plant、soil and fungal diversity
The correlations between grazing exclusion and grassland type with
plant、soil and fungal diversity are shown in Figure 6. Fraction was
only significantly negatively correlated with vegetation coverage, and
all indicators were highly significantly correlated with grassland type,
except for the vegetation Pielou index and the microbial Shannon and
Chao1 indices. In addition, the microbial Simpson index showed a highly
significant negative correlation with SOC, and a significant negative
correlation with TN, TP, C:P and N:P.