Fig. 15From: Under storm risk, economic productivity of Norway spruce (Picea abies (L.) H. Karst) in monoculture shows sharper decline than in mixture with European beech (Fagus sylvatica L.)The above shows stems per hectare (y-axis) versus mean diameter (x-axis) for the data utilised to calibrate pine. The colours of the points correspond to density/diameter relationships of particular age classes. The legend shows the number in years for the given age classBack to article page