Arid zone forestry programme: state of knowledge and experience in Pakistan

afforestation agroforesteria agroforesterie agroforestry arid zones boisement brise-vent clima climat climate climatic zones conservation de l'eau conservation des ressources conservation des sols desarrollo forestal erosion control faune et flore sauvages forest management forestry development genetic resources resource conservation rompeviento soil conservation vida silvestre water conservation wildlife wind erosion windbreaks zone aride zone climatique