Multifunctional agriculture. Implications for policy design

affectation de ressources agricultural policies agricultural resources agricultural sector cambio estructural changement structurel colonisation rurale comportamiento humano comportement humain cultivated land economic sectors food security human behaviour landscape living standards modele modelos models multiple land use niveau de vie nivel de vida noruega norway paisaje paysage politique agricole recursos agrarios resource allocation ressource agricole rural settlement secteur agricole sector agrario seguridad alimentaria sistemas de valores structural change tierras cultivadas trade liberalization uso multiple de la tierra value systems welfare economics