Figure 4 Diversity of soil nitrogen-fixing bacteria.
Note: H- high salinity; M- moderate salinity; L- low salinity; R- rhizosphere soil; NR- bulk soil; CK- highly saline unplanted control soil. The data are means (n=5). (A) Alpha diversity index ofnifH -containing nitrogen-fixing bacteria; (B) Hierarchical cluster analysis among samples; (C) Stacked histograms of the percentage of different genera of nifH -containing nitrogen-fixing bacteria in different soil samples; (D) LDA Effect Size (LEfSe) of nifH .