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Table 4 Results of stepwise multiple regression analyses to predict N2O concentration

From: N2O emission and its influencing factors in subtropical streams, China

  Sampling season Independent variables Coefficient Adjusted R2 P value
Two Rivers Whole year w-NO3 0.28 0.08 0.04
DOC 0.73 0.21 0.00
w-NH4+ − 0.28 0.27 0.02
DOC/NO3 − 0.46 0.33 0.03
High flow season w-NO3 0.59 0.301 0.01
Normal flow season Temp 0.65 0.39 0.00
Low flow season - - - -
Jinshui River Whole year DOC/NO3 − 0.53 0.25 0.01
High flow season - - - -
Normal flow season - - - -
Low flow season - - - -
Qi River Whole year w-NH4+ − 0.44 0.16 0.02
High flow season - - - -
Normal flow season - - - -
Low flow season - - - -
  1. Correlation coefficients with P values less than 0.05 were shown. “-” represent P > 0.05