Figure 8
Redundancy analysis (RDA) of soil properties and bacterial communities based on phylum and genus levels. CK, G1, G2 and G3 represent 0, 2%, 4% and 6% γ-polyglutamic acid additions in aeolian sandy soil, respectively. SOM represents organic matter content, TN represents total nitrogen content, TP represents total phosphorus content, TK represents total potassium content, AP represents available phosphorus content, AK represents available potassium content, and MC represents soil moisture content. Environmental factors are indicated by red arrows, and bacterial species are indicated by blue arrows.
