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Nitrous oxide emissions from drained peat soil beneath pasture

journal contribution
posted on 2023-05-03, 22:06 authored by Frank Kelliher, C van Koten, Stuart LindseyStuart Lindsey, Bridget WiseBridget Wise, Gerald Rys
Nitrous oxide (N2O) emissions (EN2O) from drained peat soils used for pastoral agriculture have not been measured throughout the year in New Zealand. In response to this research gap, EN2O was measured fortnightly for 1 year in the Waikato region in a plot that was not grazed or nitrogen (N) fertilised. The time series was variable, the frequency distribution skewed and the fortnightly means correlated. To account for these factors, the data were loge transformed and an order 2 autoregressive model used to estimate a mean EN2O of 4.3 g N ha−1 d−1 and 95% confidence limits of 0.6–29.1 g N ha−1 d−1. There was a statistically significant, inverse relationship between EN2O and the depth to groundwater. In winter, when rainfall totalled 393 mm, EN2O and soil N content were significantly greater under a rain shelter designed to minimise N loss by leaching, than in an uncovered plot.

History

Rights statement

© 2016 The Royal Society of New Zealand

Language

  • English

Does this contain Māori information or data?

  • No

Publisher

Taylor & Francis Group

Journal title

New Zealand Journal of Agricultural Research

ISSN

0028-8233

Citation

Kelliher, F. M., van Koten, C., Lindsey, S. B., Wise, B., & Rys, G. (2016). Nitrous oxide emissions from drained peat soil beneath pasture. New Zealand Journal of Agricultural Research, 59(4), 363-376. doi:10.1080/00288233.2016.1212382

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