Figures Captions
Fig. 1 Comparison of soil physicochemical properties amongSphagnum fen (SF), Polytrichum bog (PB) and Cryptomeria swamp forest (CSF). TC—soil total carbon content, TN—soil total nitrogen content, AP—soil available phosphorus content, NO3-N—soil nitrate nitrogen content, NH4+-N—soil ammonium nitrogen content, SWW—soil weight water content, SBD—soil bulk density. Error bars indicate the standard error (n=3). Lowercase letters represent significant differences at 95% confident interval as indicated by ANOVA with LSDpost hoc comparisons.
Fig. 2 Comparison of soil bacterial α diversity amongSphagnum fen (SF), Polytrichum bog (PB) and Cryptomeria swamp forest (CSF). Error bars indicate the standard error(n=3). Lowercase letters represent significant differences at 95% confident interval as indicated by ANOVA with LSD post hoccomparisons.
Fig. 3 Variations of soil bacterial composition amongSphagnum fen (SF), Polytrichum bog (PB) and Cryptomeria swamp forest (CSF) at phylum, class, family and genus level. (1) Comparison of soil bacterial composition among different types of sites by NMDS based on Bray-Curtis distance (A, D, H, K). (2) The number of shared and unique taxa across different types of sites (B, E, I, L). (3) Comparison of the dissimilarities of soil bacterial communities between different types of sites (C, F, J, M). Each box plot represents the maximum, minimum, 75th, and 25th quartiles respectively, the line of each box plot represents the median, and the red point of each box plot represents the mean (n=9). Lowercase letters indicate significances at the 95% confidence interval according to ANOVA with LSD post hoc test.
Fig. 4 Indicator groups analysis of bacterial communities inSphagnum fen (SF), Polytrichum bog (PB) and Cryptomeria swamp forest (CSF) with LDA SCORE > 3.5.
Fig. 5 Comparison of the relative abundance of major groups of soil bacteria in Sphagnum fen (SF),Polytrichum bog (PB) and Cryptomeriaswamp forest (CSF) at phylum, class, family and genus level. The main groups of soil bacteria were composed of the top ten groups in the relative abundance of each type of site.
Fig. 6 Redundancy analysis showing the relationship between soil physicochemical properties and major groups of soil bacterial communities in all types of sites at phylum, class, family and genus level. SF-Sphagnum fen, PB-Polytrichum bog, CSF-Cryptomeria swamp forest.