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Soil and root variables in the soil layers 0–10 cm, 10–20 cm, 20–30 cm, and 40–50 cm, given as mean values (n = 48) + SE: (A) total soil C, (B) C: N ratio (on a mass basis), (C) volumetric soil moisture (%), (D) root biomass, and (E) soil pH. Different letters indicate significant differences between groups (P < .05).
