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Table 3 Percent changes in the relative abundances of bacterial phyla and C-decomposition gene categories under different N compound addition treatments when compared with the control

From: Nitrogen deposition experiment mimicked with NH4NO3 overestimates the effect on soil microbial community composition and functional potential in the Eurasian steppe

Bacterial phyla/gene categories NH4NO3 (%) Slow-released urea (%) Urea (%) NH4HCO3 (%) (NH4)2SO4 (%)
Actinobacteria 24.97 0.83 − 2.63 9.68 19.79
Acidobacteria − 40.48 2.54 7.83 − 2.88 − 29.95
Alphaproteobacteria 34.66 0.52 − 0.02 5.87 22.81
Chloroflexi − 30.27 − 8.54 − 11.01 − 10.09 − 23.36
Verrucomicrobia − 43.85 17.99 9.26 − 31.72 − 14.36
Gemmatimonadetes − 0.44 − 11.23 − 0.64 − 0.81 − 9.68
Bacteroidetes 2.54 − 11.12 − 7.62 − 4.54 − 14.37
Betaproteobacteria 17.38 − 1.01 10.11 − 4.70 − 14.60
Deltaproteobacteria − 11.89 − 14.54 − 12.68 − 4.16 − 19.84
Planctomycetes − 27.42 19.52 15.53 − 18.46 − 2.13
Nitrospirae − 30.23 − 5.47 − 5.18 − 3.36 − 29.17
Other 7.81 − 6.35 3.07 1.39 19.58
Monosaccharides − 0.22 − 1.25 − 0.82 0.01 1.66
Polysaccharides and disaccharides 6.87 3.65 1.83 5.27 8.36
Sugar acids and alcohols 0.71 0.36 0.99 0.21 2.24
Carboxylic acids 10.83 8.02 4.63 6.76 12.73
Cellulose,lignin and lipids 5.63 0.20 3.45 1.70 7.76
Phenolics 9.24 5.87 7.00 4.66 10.16
Other aromatics 6.33 2.70 3.28 2.57 8.21