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The relative abundance of indicator class (A) with site effect and phylum (B) with altitude effect. The histogram was graphed using R. The error bars indicate the standard error (mean ± SE). Different letters above the bars indicate the significance under P < 0.05. SX-M, XZ-M, and YN-M represent the three localities with same type of altitude. XZ-H and XZ-M represent the two altitudes of same locality.
