Fig. 2From: Effects of biochar on soil microbial diversity and community structure in clay soilHistogram of a Chao, b Ace, c Shannon, and d Smith-Wilson between different amounts of biochar added. Notes: MC, BS, and MCS are the same as in Fig. 1. *P ≤ 0.05, **P ≤ 0.01, ***P ≤ 0.001Back to article page