Table 2 N2O fluxes

From: Carbon-sink potential of continuous alfalfa agriculture lowered by short-term nitrous oxide emission events

Year

Annual mean (mg N2O m−2 y−1)

Flux (n)

Hot moment flux (n)

Hot moment mean (mg N2O m−2 d−1)

Hot moments removed mean (mg N2O m−2 y−1)

Hot moments % of total flux

1 (2017–2018)

610.5 ± 68.1

25,252

48

496.1 ± 66.8

263.4 ± 9.9

56.8%

2 (2018–2019)

901.9 ± 74.5

25,169

74

456.6 ± 43.0

402.4 ± 13.7

55.3%

3 (2019–2020)

777.1 ± 52.0

26,261

55

363.1 ± 46.2

485.7 ± 10.4

37.5%

4 (2020–2021)

263.6 ± 5.6

25,336

273

19.8 ± 0.7

180.39 ± 2.6

31.6%

All years

624.4 ± 27.8

103,013

201

401.1 ± 26.9

346.9 ± 4.7

44.4%

  1. Mean (± standard error) annual nitrous oxide (N2O) fluxes by site year, number of measurements, number of outlier measurements, outlier mean (± standard error) N2O fluxes, mean N2O fluxes (± standard error) without hot moments included, and contribution of hot moments to total mean flux. Hot moments were calculated separately for each year and in aggregate for the total dataset (All years).
Back to article page