The properties of tracheids in spruce (Picea abies Karst.) and pine (Pinus sylvestris L.)

anatomia anatomie anatomie du bois anatomy anchura arbre arbre brise-vent arbre forestier arbre pour bois de construction cells cellule chemicophysical properties conifere conifers crops cultivos dimension dimensions economic plants forest trees gimnospermas gymnosperme gymnosperms largeur largura length longueur picea picea abies pinaceae pinus pinus sylvestris plant anatomy plantas plantas protectoras plante plante de culture plante de protection plante pour construction plants protective plants specific gravity structural crops timber trees tracheide tracheids traqueidos trees width windbreak trees wood anatomy