典型草原优势植物根际细菌群落多样性和功能群组成对长期放牧的响应机制

崔冬晴, 田晨, 宋慧敏, 鲁小名, 萨其日, 徐国庆, 杨培志, 白永飞, 田建卿

Response mechanisms of rhizosphere bacterial community diversity and functional group composition of dominant plants in typical grasslands to long-term grazing

CUI Dong-Qing, TIAN Chen, SONG Hui-Min, LU Xiao-Ming, SA Qi-Ri, XU Guo-Qing, YANG Pei-Zhi, BAI Yong-Fei, TIAN Jian-Qing

图2 不同放牧强度下大针茅和糙隐子草根际细菌α多样性指数。*, p < 0.05; **, p < 0.01; ns, p ≥ 0.05。CK、L、M和H分别代表对照、轻度放牧、中度放牧、重度放牧。不同大写和小写字母分别表示不同放牧强度对大针茅和糙隐子草根际细菌α多样性影响差异显著(p < 0.05)。

Fig 2 Alpha diversity index of rhizosphere bacteria of Stipa grandis and Cleistogenes squarrosa under different grazing intensities. *, p < 0.05; **, p < 0.01; ns, p ≥ 0.05. CK, L, M and H represent the control, light grazing, moderate grazing and heavy grazing intensity, respectively. Different upper- and lower-case letters indicate significant differences (p < 0.05) in the effects of rhizosphere bacterial alpha diversity of Stipa grandis and Cleistogenes squarrosa.