Covering about one quarter of the world's land surface, mountains provide a direct life-support base for about 12 per cent of the world's population, as well as essential goods and services to more than half of humankind.
Occupant environ un quart des terres émergées, elles pourvoient directement à la subsistance de 12 % de la population mondiale et offrent des biens et des services à plus de la moitié de l'humanité.