Fig. 1: Global maps of the soil δ15N and the isotope-benchmarking based fraction of denitrification N loss (fdenit) in natural terrestrial ecosystems.
a Global map of the mean of soil δ15N produced by Random Forest models. b Global map of the ensemble mean of fdenit derived using six sets of N inputs. The colored dots represent the field measured soil δ15N and corresponding fdenit in (a) and (b), respectively. Note that these two maps are upscaled from climate, soil and microbial symbionts, and other predictors (Supplementary Table 7) only for natural ecosystems.
