Drylands: Sustaining Livelihoods and Conserving Ecosystem Services. A policy brief based on the Sustainable Management of Marginal Drylands (SUMAMAD) project
The drylands of the world occur on every continent, covering some 41% of the terrestrial surface. One third
of humanity inhabits these harsh degrading landscapes, eking out a living through adaptive processes that
have served them well until recent increases of land degradation. Growing pressures from population growth,