Fig. 4

Relative changes in values for individual variables of forest structure for plots with no harvesting activity (HI = 0) over the most recent inventory period (2002–2012) for Baden-Württemberg; DBHq: quadratic mean diameter at breast height, DBH sd: standard deviation of diameter at breast height, Height sd: standard deviation of stand height, SR: species richness, SR Reg: species richness in regeneration layer, Bark: diversity of bark types, Flower: diversity of flowering trees, Vol40: occurrence of large living trees with a DBH ≥ 40 cm, DW s: mean DBH of standing deadwood, DW d: mean diameter of downed deadwood and N DC: number of decay classes