Fig. 2: Temporal evolution of model number, features, scopes and validation procedure.
From: Soil organic carbon models need independent time-series validation for reliable prediction
Evolution of (a) the number of publications reviewed in the present research and model features (expressed as percentages of all models in each time interval) regarding: (b) decomposition kinetics, (c) model level of interest, (d) model scope, and model validation according to (e) the procedures applied and (f) validation conditions. Curly brackets in (d) group models including ‘prediction’ among their scopes; curly brackets in (f) highlight the percentage of models undergoing independent diachronic validation.
