FIGURE 4.

Density plots showing the distribution of the three variables included in the regression model used to predict C‐N response (a) in temperate forest experimental plots in the database (yellow) and (b) in global temperate forests (grey). For the density plots for global forests, frequency of occurrence was weighted by forest area (i.e. can be read as “frequency for km² forest”). Dashed lines show average values across experimental plots (yellow) and global forests (grey). Density plots for other biomes are shown in Figure S8