Research on the functional property of the broad-leaved forest for water resource conservation, 1

arbre arbre forestier arbre pour bois de construction bassin versant bosques conservation conservation de l'eau conservation des ressources crops cultivos dicotiledoneas dicotyledons economic plants fagaceae fagales forest trees forests natural resources physiographic features plantas plante plante de culture plante pour construction plants quercus recursos recursos naturales resource conservation resources ressource ressource en eau ressource naturelle structural crops timber trees trees vegetation water conservation water management water resources watersheds