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Table 1 The Shannon index (H) and Simpson index (D) of AOB and AOA community structure diversity

From: Effects of combined application of nitrogen fertilizer and biochar on the nitrification and ammonia oxidizers in an intensive vegetable soil

  AOB AOA
H D H D
Control 1.099a 0.614a 1.063a 0.596a
Urea 1.060ab 0.616a 1.043ab 0.593a
(NH4)2SO4 0.999c 0.589b 1.070a 0.597a
Biochar 1.049b 0.611a 1.058a 0.596a
Biochar +Urea 0.932d 0.555c 1.067a 0.599a
Biochar + (NH4)2SO4 0.890d 0.518d 1.005b 0.583a
  1. Different letters indicate significance at p < 0.05