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Table 2 Soil microbial functional diversity index under different nitrogen addition concentrations

From: Effect of nitrogen addition on the carbon metabolism of soil microorganisms in a Calamagrostis angustifolia wetland of the Sanjiang Plain, northeastern China

Treatments

Shannon index

Simpson index

Pielou index

CK

3.01 ± 0.04a

0.94 ± 0.0a

0.92 ± 0.01a

N40

3.02 ± 0.03a

0.94 ± 0.0a

0.91 ± 0.01a

N80

2.45 ± 0.09b

0.90 ± 0.01b

0.87 ± 0.02b

  1. Each treatment was performed in triplicate. The data are expressed as the mean ± standard deviation; lowercase letters indicate significant differences (P < 0.05)
  2. CK control, N40 40 kg N ha−1 a−1, N80 80 kg N ha−1 a−1