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Global Deserts Outlook
Global Deserts Outlook
Global Deserts Outlook examines the historical context, location and extent of the world’s deserts, as well as the fragile ecologies and unique biota of deserts. The report also aims to highlight the importance of desert ecosystem services, such as crops, oil and mineral deposits and tourism, and the challenges faced by countries with desert ar ...
Relative biodiversity scenarios for deserts 2000-2050
The relative species abundance, as a ratio of the biodiversity before the advent of man, is high in desert areas. The areas are relatively pristine and has seen little changes induced by human activities. Impacts are mos...
06 Mar 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
Climate change scenarios for desert areas by 2050
In desert areas by 2050, the majority of the temperature increase, according to the NCAR-CCSM3 model (and the IPCC SRES A2 scenario), will occur in the Northern Sahara, western Australia and in the inland deserts of Nort...
06 Mar 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
Land cover changes in desert areas 1700,1900,2000 and 2050
The main land use change in desert areas has been the conversion of relatively barren drylands for agricultural needs, partially through irrigation. The conversion has historically primarily been to use the land for graz...
06 Mar 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
Climate change scenarios for desert areas
SRES scenarios show the period 2071 to 2100 relative to the period 1961 to 1990, and were performed by AOGCMs. Scenarios A2 and B2 are shown as no AOGCM runs were available for the other SRES scenarios.
06 Mar 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
Human impact in desert areas 1700,2000 and 2050
The impact of human activities on wilderness qualities has been modelled using the GLOBIO-2 model. The model uses infrastructure and settlements as proxies and measure the degree by which habitats have reduced their wild...
06 Mar 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal