图3. 北京松山自然保护区不同干扰强度下土壤微生物群落组成(门水平)。
A, 土壤真菌。B, 土壤细菌。LD, 低干扰区; HD, 高干扰区; ND, 无干扰区。图中整体分为上下两部分, 上半部分从左到右依次为低干扰区、高干扰区、无干扰区, 下半部分为各菌群; 上下连接的弦越粗代表菌群的占比越大。刻度数字表示菌群数量。

Fig. 3. Soil microbial community structure in different disturbance intensity groups (phylum level) in Beijing Songshan Nature Reserve.
A, Soil fungi. B, Soil bacteria. LD, low disturbance group; HD, high disturbance group; ND, no disturbance group. The whole picture is divided into upper and lower part. The upper part from left to right represents low disturbance group, high disturbance group and no disturbance group, respectively, while the lower part represents different microbial taxa; the thicker the chord, the greater proportion of the corresponding microbial taxa. Scale number represent the number of microorganisms.