Table 1.
The descriptions of soil sampling sites.
Fig 1.
The descriptions of soil sample sites.
Table 2.
Biogeochemical properties of soils under different vegetation types.
Table 3.
Characteristics of soil bacteria richness and diversity indices under different vegetation types (Means ± SD, n = 3).
Fig 2.
Relative abundance in the bacterial community composition at the phylum level (A and C) and at the class level (B and D) within the different ecosystems.
Values designated by different lowercase letters showed significant differences under different vegetation ecosystems in the same phyla, the same as followings (P < 0.05).
Table 4.
The Pearson correlations between the relative abundances of the 9 dominant bacterial phyla and environment factors.
Fig 3.
Ordination plots of the results from the RDA to examine the relationship between bacterial populations (shown in the blue) and selected environment factors (shown in red), including pH, TP, TN, MAP, MAT, MBC, SOM, SM and C/P in the five different ecosystems.
Site 1, 2 and 3 were in the desert ecosystem; Site 4, 5 and 6 were in the sandy ecosystem; site 7, 8 and 9 were in the grass ecosystem; site 10, 11 and 12 were in the forest- grass ecosystem; site 13, 14 and 15 were in the forest ecosystem.
Fig 4.
The relationship between latitude and the relative abundance within the soil bacterial community compositions (8 dominant phyla).