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The community compositions of soil bacteria in different land uses on the Loess Plateau. The top panel represents the distributions of the soil bacterial community at the phylum level; the bottom panel represents the distributions of the soil bacterial community at the class level. Orh refers to orchards. Primer pair 520f/802r targeted the V4 region of the 16S rRNA gene; primer pair 338f/806r targeted the V3–V4 region of the 16S rRNA gene.
