Table 3 N₂O emission factor (EF5-r, dissolved N₂O-N:NO₃⁻-N) of Jinshui River and Qi River

Jinshui River

Downstream

0.054 ± 0.013

0.062 ± 0.023

0.089 ± 0.007^a

Midstream

0.049 ± 0.002

0.072 ± 0.008

0.076 ± 0.005^a

Upstream

0.042 ± 0.001

0.047 ± 0.003

0.047 ± 0.004^b

Qi River

Downstream

0.039 ± 0.026

0.083 ± 0.026

0.113 ± 0.028

Midstream

0.046 ± 0.011

0.061 ± 0.011

0.054 ± 0.002

Upstream

0.034 ± 0.012

0.057 ± 0.012

0.075 ± 0.016%