[Vegetation and grazing in the Gol mountains. Report from vegetation mapping]

biological production boreal forests bovin browse plants cattle comunidades vegetales ecologia ecologie ecology encuestas forest grazing ganado bovino highlands land use marginal land noruega norway nutritive value ovin ovinos pastizales pastoreo en el bosque pastures planification planning plant communities plantas de ramoneo plante d'abroutissement production biologique sheep surveys terre marginale tierras marginales utilisation des terres valeur nutritive valor nutritivo