Fig. 4

a Density scatterplot between the observed and predicted stand mean DBH at the stand scale, b cumulative distribution functions of the observed and predicted stand mean DBH at the stand scale, c density scatterplot between the observed and predicted stand mean DBH at the ecotype scale, and d cumulative distribution functions of the observed and predicted stand mean DBH at the ecotype scale. The dotted line in a and c is the 1:1 line and the solid line in a and c is the regression line of geometric mean function