Fig. 4
From: Responses of soil microbial communities to freeze–thaw cycles in a Chinese temperate forest
Relative abundance of a bacterial and b fungal community at the phylum and class level among different freeze–thaw stages, respectively. Different letters within the same horizon indicate significant differences among different stages for each soil horizon. The changes in the relative abundance of bacterial communities at the more detailed taxonomic level (genus level) are shown in Additional file 1: Fig. S6