基于分子生态学网络分析松嫩退化草地土壤微生物群落对施氮的响应

朱瑞芬,刘杰淋,王建丽,韩微波,申忠宝,辛晓平

Molecular Ecological Network Analyses Revealing the Effects of Nitrogen Application on Soil Microbial Community in the Degraded Grasslands

ZHU RuiFen,LIU JieLin,WANG JianLi,HAN WeiBo,SHEN ZhongBao,XIN XiaoPing

表4 施氮和未施氮退化草地土壤微生物群落的分子生态网络拓扑性质

Table 4 Topological properties of the empirical molecular ecological networks (MENs) of microbial communities in the no fertilized (NF) and fertilized (F) soils

处理Treatment 阈值 Threshold 节点数 Total node 连接数 Total links 正向连接比 Positive link percentage (%) 平均连通度 Connectivity 平均路径长度 Average path distance 平均聚集系数 Clustering coefficient 模块性 Modularity F 0.9 1872 19873 53.2* 23.6* 2.33* 0.435* 0.46* NF 0.9 1913 20389 69.4* 28.7* 2.89* 0.462* 0.41*