Matrix of environmental risks in arid mobile grazing system

Resource base | Risks and opportunities | Underlying factors
Land soil structure | (-) Increase of erosion : by wind, runoff, and dune mobilization | Excessive grazing and browsing
Water Quality | (-) Organic pollution in wells and ponds | Pollution by animal faeces: unsafe water extraction techniques
Water Underground reserve | (+) Access to deep water reserve for drinking | Drilling programmes for water supplying
(+) Access to deep water reserve for drinking | Use of draught animals for water extraction in wells
(-) Aquifer depletion | Supply of water from boreholes
Biodiversity Vegetation structure | (-) Deterioration of ground cover | Excessive grazing or browsing
Biodiversity Plant species | (-) Reduction of botanical diversity | Excessive grazing or browsing, pruning
Biodiversity Animal species | (-) Reduction of wildlife and habitat | Competition for food between domestic animals and wildlife

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