FIG. 2.

Relationships between the Acidobacterium division bacterial communities by PCA. Acidobacterium division bacterial communities from the interspaces (I) and from the rhizospheres of Hilaria (H), Stipa (S), and Bromus (B) plants at a soil depth of 20 to 30 cm are shown. The proportion of variance for the first, second, and third components was 0.2441, 0.1913, and 0.1523, respectively. The first and second components explained 43.5% of the variability, and the first and third components explained 39.6% of the variability.