图5. 铬(Cr)胁迫时间序列上土壤中细菌(A、C)与真菌(B、D)群落的α多样性及β多样性。A、B, 细菌和真菌群落的α多样性。不同小写字母表示不同处理间差异显著(p < 0.05)。C、D, 细菌和真菌群落的β多样性, 两样本点越接近, 表明两样本物种组成越相似。CK, 对照组; Cr_6d, Cr胁迫6 d ; Cr_6h, Cr胁迫6 h。Stress为反映模型合适程度的指标。

Fig. 5. Analysis of α-diversity and β-diversity of bacterial (A, C) and fungal (B, D) communities in the chromium (Cr) stress time series. A, B, α-diversity of bacterial and fungal communities. Different lowercase letters mean significant differences among treatments (p < 0.05). C, D, β-diversity of bacterial chromium fungal community. The closer the points of two samples, the more similar the species composition of the two samples. CK, control; Cr_6h, Cr stress for 6 h; Cr_6d, Cr stress for 6 d. Stress is a metric reflecting the suitability of the model.