Cost effective early thinnings: Final report of concerted action AIR2-CT93-1538

aclareo agotamiento del suelo aire de loisir caballo de tiro carreteras cheval de trait ciencias forestales compactage du sol conveyers cosecha draught horses environmental impact europa europe foresterie forestry formation professionnelle harvesting impact sur l'environnement impacto ambiental legislation mechanical damage mechanization opinion publique projet de recherche public opinion recreational areas research projects roads route silvicultural systems sistemas silviculturales soil compaction soil exhaustion thinning tracteur tractores tractors transportadoras transporteur vocational training zonas recreativas