Table 4 Three techniques used to estimate the annual denitrification rate from the study site.
Technique | Correlation variable with D14 | Spatial analysis | Modelling approach | Mean annual D14 rate (Gmol N yr−1 study site area−1) |
|---|---|---|---|---|
1 | None; used mean D14 for all stations | None; used study area as a whole | Propagated error | 5.30±3.60 |
2 | BPc for 51 stations | Empirical Bayesian kriging; 7 bins | Propagated error | 4.65±0.16 |
3 | BPc for 51 stations | Empirical Bayesian kriging; 7 bins | Randomly generated rates in each bin for 100,000 iterations | 4.04±0.001 |
