Table 2 Mean soil N2O emission from 2010 to 2012 after N and P additions in the secondary tropical forest of South China (Mean ± SE, n = 5)

From: Nitrogen and phosphorus addition impact soil N2O emission in a secondary tropical forest of South China

 

Soil N2O emission (ug N2O-N m−2h−1)

Treatments

Total

Wet Seasons

Dry Seasons

Control

43.3 ± 3.6b

54.6 ± 5.6c

28.6 ± 3.0b

aP

41.8 ± 3.3b

50.5 ± 5.1c

30.2 ± 2.5b

aN

60.2 ± 6.0a

78.8 ± 9.6b

36.1 ± 2.9a

aNP

69.4 ± 9.2a

97.4 ± 15.0a

33.7 ± 2.3ab

P-values of RM-ANOVA

P

0.311

0.201

0.548

N

<0.001

<0.001

0.063

N*P

0.162

0.092

0.547

  1. Note: Different letters denote significant difference (P < 0.05) between treatments by LSD. aN: N addition treatment; aP: P addition treatment; aNP: N and P co-addition treatment.
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