Fig. 1: Sources and processes of PUN in terrestrial ecosystems.
PUN plant-used N, SON soil organic N, TEN total extractable N, EON extractable organic N, NH4+ ammonium, NO3- nitrate, Dep depolymerization, Min mineralization, Nitri nitrification.
Fig. 1: Sources and processes of PUN in terrestrial ecosystems. | Nature Communications
