According to the Spearman rank correlation coefficients,
the five inputs that most affect the uncertainty in N2O emissions in 1990and 2010 are: the emission factor for emissions from the direct application of nitrogen fertilizer (EF1); the emission factor for nitrogen leaching and runoff (EF5);
the fraction of nitrogen lost to leaching (FracLEACH);
the emission factor for animal waste management for pasture,
range of paddock (EF3) and the emission factor for nitrogen deposition (EF4).
The rank correlation coefficients for 2010 are shown in Fig. 5 (the results for 1990 were similar).