Study of some characteristics of young beeches in the regeneration gaps of irregular shelterwood system (Femelschlag) [lammas shoot]

alargamiento del tallo allongement de la tige altura bourgeon branching buds canopy couvert crecimiento croissance cubierta de copas entre noeud fagus sylvatica growth hauteur height internodes internodios light light regimes luz ombre procedencia provenance ramification regeneration regimenes de luz shade sombra stem elongation suisse suiza switzerland yema (planta)