The correlation between the characteristics of Tetraena mongolica and soil characteristics and soil microbial community. Different colors represent different positive and negative correlations and the magnitude of correlations. The specific values of correlations are shown in the lower part of the figure. “*” means significant difference, that is, p < 0.05; “**” means the difference is very significant, that is, p < 0.01. In the figure, TM_IV is the important value of T. mongolica, TM_Biomass is the biomass of T. mongolica, RS_Biomass is the biomass of Reaumuria songarica; PM_Biomass is the biomass of Potaninia mongolica; SP_Biomass is the biomass of Salsola passerina; TM_Amount is the number of plants including T. mongolica, TM_CD is the richness of Archaea Including Arc_Richness, Bacteria including Bac_Richness and Fungi including Fun_Richness. B_Shannon is shrub diversity index, G_Shannon is herb diversity index, and G_AGB is herb aboveground biomass.