涝害对不同大豆品种根际微生物群落结构特征的影响

禹桃兵, 石琪晗, 年海, 连腾祥

Effects of waterlogging on rhizosphere microorganisms communities of different soybean varieties

YU Tao-Bing, SHI Qi-Han, NIAN-Hai , LIAN Teng-Xiang

表2 根际细菌网络的拓扑结构

Table 2 Topological properties of rhizosphere bacterial networks

网络指标 Network metrics W-SCK W-TCK W-S1D W-T1D W-S5D W-T5D 节点数Number of nodes 81 79 79 74 89 86 边数Number of edges 338 346 536 317 521 579 正相关数Number of positive correlation 218 216 433 224 321 353 负相关数Number of negative correlations 120 130 103 93 200 226 平均路径长度Average path length 3.816 3.058 2.626 3.688 3.192 3.195 图密度Graph density 0.104 0.112 0.174 0.117 0.133 0.158 网络直径Network diameter 10 7 7 9 9 9 平均聚类系数Average clustering coefficient 0.641 0.594 0.72 0.688 0.638 0.649 平均加权度Average degree 2.301 2.931 8.219 3.459 2.723 3 连接部件Number of modules 4 4 5 5 3 3 模块化Modularity 8.518 6.313 0.613 2.164 4.412 3.709