Fig. 4From: Variation in black spruce (Picea mariana (Mill.) BSP) wood quality after thinning a Change along the first 4 m of stem in average ring density (Average RD) for thinned stands. b Average RD for control stands. c, d Modulus of elasticity (MOE) for thinned stands and control stands before (black square) and after (white square) thinning yearBack to article page