EEC Forest Project, final report, task 3: Modelling spiral grain variation in relation to silvicultural treatment [including 8 team reports, grading rules, KAR, Knot Area Ratio]

age altura anillo de crecimiento belgique belgium bois breast height diameter calidad canopy cerne copa couvert crown cubierta de copas danemark denmark densidad density dinamarca edad france francia growth rings hauteur height houppier madera madera elaborada noruega norway picea pseudotsuga menziesii quality sawnwood silvicultura silviculture sylviculture wood