The 1994 United Nations Convention to Combat Desertification (UNCCD) is the only legally binding international agreement linking environment and development to sustainable land management. The Convention addresses the arid, semi-arid and dry sub-humid areas, known as the drylands, where some of the most vulnerable ecosystems and peoples can be found. Parties work together to improve the living conditions for people in drylands, to maintain and restore land and soil productivity, and to mitigate the effects of drought.
The UNCCD is particularly committed to a bottom-up approach, encouraging the participation of local people in combating desertification and land degradation. The UNCCD is one of the three Rio Conventions—along with the UN Framework Convention on Climate Change (UNFCCC) and the Convention on Biological Diversity (CBD)—and was called for in Agenda 21, the programme of action adopted at the 1992 UN Conference on Environment and Development (UNCED, or Earth Summit).