Fig. 1

Mean biomass components (\( {\overset{-}{b\hbox{'}}}_{\mathrm{ST}} \), \( {\overset{-}{b\hbox{'}}}_{\mathrm{CW}} \), \( {\overset{-}{b\hbox{'}}}_{\mathrm{N}} \), \( {\overset{-}{b\hbox{'}}}_{\mathrm{CO}} \), \( {\overset{-}{b\hbox{'}}}_{\mathrm{R}} \), g) at the plot level in 16-year-old trees (y axis). Tree density of the plots (trees ha⁻¹) is displayed on the x axis. The application year of treatments is represented by black-coloured symbols for the dry site and grey-coloured symbols for the semiarid site (see Tables 3 and 4 for acronyms). T _C non-thinned plots (control), T ₅ thinning in 1999, T ₁₀ thinning in 2004, T _5 + 10 thinning in 1999 to a final density of 1600 trees ha⁻¹ and thinning in 2004 to a final density of 800 trees ha⁻¹