Home garden agroforestry and sustainability in Kandy distruct, Sri Lanka

agroforesteria agroforesterie agroforestry arbre pour bois de construction bois de chauffage conduite de la culture crop management crops cultivos domestic gardens fuelwood gestion du sol hogares households huertos familiares jardin familial land use manejo del cultivo manejo del suelo multipurpose trees plante de culture rendement rendimiento sistemas de valores soil management sostenibilidad sri lanka sustainability tenencia tenure timber trees utilisation des terres value systems yields