冬季增温和减雪对黄土高原典型草原土壤养分和细菌群落组成的影响
毛瑾1, 朵莹1, 邓军2, 程杰3, 程积民4, 彭长辉4,5, 郭梁4,6,*(
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Influences of warming and snow reduction in winter on soil nutrients and bacterial communities composition in a typical grassland of the Loess Plateau
MAO Jin1, DUO Ying1, DENG Jun2, CHENG Jie3, CHENG Ji-Min4, PENG Chang-Hui4,5, GUO Liang4,6,*()
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图4. 不同处理下土壤细菌在不同分类学水平上的相对丰度比较。A, 门水平细菌相对丰度。B, 纲水平细菌相对丰度。CK, 对照; S, 减雪; W, 增温; WS, 增温减雪互作。同一分类群不同小写字母表示不同处理间丰度差异显著(p < 0.05), 标注于对应的分类群相对丰度柱状图中央部位。
Fig. 4. Comparison of the relative abundance of soil bacteria at different taxonomic levels under different experimental treatments. A, Relative abundance of bacteria at phylum level. B, Relative abundance of bacteria at class level. CK, control; S, snow reduction; W, warming; WS, interaction of warming and snow reduction. Different lowercase letters of the same taxon indicate significant differences in abundance between different treatments (p < 0.05). The lowercase letters are marked in the center of the corresponding bar graph of taxon relative abundance.
