Global oppvarming medfører ørkenspredning som igjen fører til ytterligere oppvarming - en ond sirkel.
Betalingsvilje :
The UNCCD estimates that around 12m hectares of productive land are lost to desertification and drought each year. This is an area that could produce 20m tonnes of grain annually.
This has a considerable financial impact. In Niger, for example, the costs of degradation amounts to 11% of its GDP, in Argentina about 16%.