Fig. 3

Change over time from year 2007 (NFI data) to year 2027 (20-year projection) in model output variables total number of trees / ha (Nha) and total stem volume / ha (Vha), and in tree diameter (at breast height, over bark) distribution. Model outputs are plotted for the different levels of a given stratification factor, while the other stratification factor levels were aggregated after projection: 9 levels of NFI region (NFI region = 1–9; top row), 3 levels of tree species composition (broadleaf-dominated, conifer-dominated and broadleaf-conifer mixed stands; middle row) and 3 levels of stand structure (high forest, coppice forest and high-coppice forest mixture; bottom row). Diameter classes are indicated by their lower limit starting from the 7.5 cm-limit, and each has a width of 10 cm. Diameter classes ≥67.5 cm are not plotted as the number of trees per diameter class was relatively low and thus barely visible on the chart