Additional file 6 of The chemodiversity of paddy soil dissolved organic matter correlates with microbial community at continental scales

Table S4. Significant correlations between predicted functions and the compositional changes of DOM. Pearson’s correlation coefficient tests were performed between predicted FOAM functions (level 1 and 2) and the compositional changes of DOM along first and second canonical axes obtained from canonical correlation analysis (CCorA). CCorA was performed using the first five principal coordinate (PCo1–5) axes of DOM composition and PCo1–2 axes of FOAM orthologs. It resulted in two canonical axes (P < 0.01, chi-square test) along which significant correlations were observed between functional potentials and DOM composition (P < 0.013). Only functions with significant correlations (P < 0.05) were shown here. (XLSX 21 kb)

附表S4：预测功能与溶解有机质（Dissolved Organic Matter, DOM）组成变化间的显著相关性。本研究针对预测得到的FOAM功能注释（等级1与等级2），与通过典型相关分析（canonical correlation analysis, CCorA）得到的DOM组成在第一、第二典范轴上的变化开展了皮尔逊相关系数检验。本次典型相关分析采用DOM组成的前5个主坐标轴（PCo1–5）以及FOAM直系同源基因的前2个主坐标轴（PCo1–2）进行，最终得到两条典范轴（卡方检验P < 0.01），在此两条轴上观测到功能潜力与DOM组成间存在显著相关性（P < 0.013）。本文仅展示了相关性显著（P < 0.05）的功能。（XLSX 21 kb）