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1 May 2011 Probability distribution functions for short-term daily nitrous oxide fluxes in a prairie pothole agricultural landscape in western Canada
Alan P. Moulin, Mario Tenuta, David A. Lobb, Adedeji S. Dunmola, Priyantha Yapa
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Abstract

Moulin, A., Tenuta, M., Lobb, D., Dunmola, A. and Yapa, P. 2011. Probability distribution functions for short-term daily nitrous oxide fluxes in a prairie pothole agricultural landscape in western Canada. Can. J. Soil Sci. 91: 303-307. Probability distributions of N2O fluxes are often non-normal due to large temporal and spatial variability of environmental factors. The most common approaches to statistical analyses of these fluxes in the scientific literature are to transform data with a log function, or conduct non-parametric tests. Analysis of N2O flux data for 128 sites within a 16-ha field, taken on 20 dates in 2005 and 2006 near Brandon, Manitoba, show that the Johnson Su and generalized log probability distributions provided the best fit for the majority of sample dates. The results of this research indicate that statistical analysis of N2O fluxes with the Johnson Su probability function should be considered as an alternative to the lognormal function.

Alan P. Moulin, Mario Tenuta, David A. Lobb, Adedeji S. Dunmola, and Priyantha Yapa "Probability distribution functions for short-term daily nitrous oxide fluxes in a prairie pothole agricultural landscape in western Canada," Canadian Journal of Soil Science 91(2), 303-307, (1 May 2011). https://doi.org/10.1139/CJSS10070
Received: 10 June 2010; Accepted: 1 January 2011; Published: 1 May 2011
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KEYWORDS
Nitrous oxide flux
oxyde nitreux
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