雅鲁藏布江中游丰水期原生动物群落多样性及其影响因子

杨清, 李晓东, 杨胜娴, 巢欣, 刘惠秋, 巴桑

Protozoan community diversity and its impact factor in the middle reaches of the Yarlung Zangbo River in the wet season

Qing Yang, Xiaodong Li, Shengxian Yang, Xin Chao, Huiqiu Liu, Sang Ba

表1 原生动物群落共现网络的拓扑结构特征

Table 1 The topological characteristics of co-occurrence networks of protozoan communities

网络拓扑指标 Network topology indicators 全河段 All river reaches (All) 干流 Mainstream (M) 支流 Tributary (T) 连接数 Number of connections 4,171 6,397 5,044 平均度 Average degree 27.807 42.647 33.627 网络直径 Network diameter 8 4 6 平均路径长度 Mean path length 2.641 2.201 2.422 图密度 Density of figure 0.093 0.143 0.112 模块化系数 Modularity coefficient 0.815 1.410 0.909 平均聚类系数 Mean clustering coefficient 0.614 0.511 0.557 正相关占比 Positive correlation (%) 82.6 64.5 73.5 负相关占比 Negative correlation (%) 17.4 35.5 26.5