Fig. 5
Effect of using (model = GPASOIL-v1) instead of (model = GPASOIL-v0) on simulated soil P pools for cropland. First line shows the simulation with (model = GPASOIL-v0) while the second line shows (model = GPASOIL-v1). All simulations have been performed with (data = GPASOIL-v1). The last line shows the difference (model = GPASOIL-v1) - (model = GPASOIL-v0). All plots are in kgP ha−1. The effect of changing the soil P dynamic model is provided for different soil P pools (Pi-lab, Pi-sec, Px-occ) and on the variable fupns, which corresponds to the P uptake prescribed by the data but that the soil P pools simulated by the model are not able to satisfy. Soil P pools plotted correspond to the year 2018 while fPupns corresponds to the annual average over 1900–2018.
