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. 2018 Sep 13;13(9):e0203812. doi: 10.1371/journal.pone.0203812

Fig 3. Average well color development (AWCD), Shannon index (H’), Simpson index (D) and McIntosh index (U) in Ferralic Cambisol, Calcaric Cambisol, and Luvic Phaeozem at the end of the 1st and 12th months with the amendment of different organic materials.

Fig 3

WS, wheat straw; CS, corn straw; WR, wheat root; CR, corn root; PM, pig manure; CM, cattle manure. Different letters indicate significant differences at P < 0.05 among different materials in the same soil.