蒙古栎纯林根际与非根际微生物群落结构对土壤碳氮的响应

侯馨博, 赵秀海, 何怀江, 张春雨, 王娟, 任雪莹, 张新娜

Responses of rhizosphere and non-rhizosphere microbial communities to the soil carbon and nitrogen in Quercus mongolica pure forest

Xinbo Hou, Xiuhai Zhao, Huaijiang He, Chunyu Zhang, Juan Wang, Xueying Ren, Xinna Zhang

图4 根际(a)与非根际(b)土壤微生物群落与土壤碳氮因子Mantel检验相关性分析。格子内颜色梯度表示Pearson的相关性系数, * P < 0.05, ** P < 0.01; 两点连线的颜色表示统计显著性, 宽度表示相关性的Mantel’s r统计量, 实线表示正相关关系, 虚线表示负相关关系, 橙色代表极显著相关(P < 0.01), 绿色代表显著相关(P < 0.05)。TC: 全碳; TN: 全氮; SOC: 土壤有机碳。

Fig. 4 Mantel test correlation analysis between microbial communities and soil carbon-nitrogen factors in rhizosphere (a) and non-rhizosphere (b) soils. Color gradient within grids represents Pearson’s correlation coefficient, * P < 0.05, ** P < 0.01; the color of connecting lines indicates statistical significance, the width represents the Mantel’s r statistic, solid lines indicate positive correlations, dashed lines indicate negative correlations, orange indicates highly significant correlations (P < 0.01), and green indicates significant correlations (P < 0.05). TC, Total carbon; TN, Total nitrogen; SOC, Soil organic carbon.