Fig. 9From: Static site indices from different national forest inventories: harmonization and prediction from site conditionsAge-height scatter plots for the six investigated tree species in the German and French NFI data: a Norway spruce, b European beech, c Douglas-fir, d Scots pine, e sessile oak, and f pedunculate oak. Lines depict quantile regression for the 5% and 95% percentiles with the Chapman-Richards functionBack to article page