41.B3Niveau 4Bois de Bouleaux montagnards et subalpins
↑ Niveau supérieur
Description
Birch stands of the montane and sub-alpine levels of the Alps, the Apennines, the Pyrenees, the Jura and the Hercynian ranges, mostly sub-climax formations of stations with anomalous edaphic and microclimatic conditions.
Taxons associés
Aucun taxon référencé.
41.B32Niveau 5Massifs forestiers de Bouleaux
Habitat sélectionné
Description
Birch stands, mostly of Betula pubescens (B. carpatica, B. tortuosa), occupying, in the Alps, the Jura and the Hercynian ranges, cold stations on cliff-base rocky screes and boulder-falls through which cold air flows.