Table 1 . Species number (richness) within different phyla in the grassland regions with different degradation levels.
Note: Different lowercase letters in the same column represent a significant (P < 0.05) difference in species richness within each phylum in different regions of degraded grasslands in grassland 1 and grassland 2. The magnitude of the number represents the level of degradation. A smaller numerical index indicates a lower degradation level.
Table 2. Correlation between alpha diversity and mean nearest taxon distances (ses.MNTD) of different phyla.