Fig. 3: Spatial attribution of the relationship between nitrogen deposition (Ndeposition) and date of foliar senescence (DFS) for forest plants.
From: Nitrogen deposition favors later leaf senescence in woody species
a The relative importance of biotic and abiotic factors controlling the spatial variability of Ndeposition-DFS correlations, determined by a random forest model (R2 = 0.74, n = 5278) using mean absolute SHAP values. The inner subplot indicates the averaged importance of N-related, climate, vegetation, and soil factors. The right beeswarm plot shows the distribution of SHAP values for each factor. b, c Variations of SHAP values along with plant N resorption efficiency (b) and N use efficiency (c). The lines and bands indicates the means and standard deviations, respectively. Source data are provided as a Source Data file.
