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UKAID Department for International Development (R4D)1995

Optimising utilisation of semi-arid rangelands

Semi-arid Rangelands

UKAID Department for International Development (R4D)

Titre : Optimising utilisation of semi-arid rangelands

Pays : Botswana, Zimbabwe

Projet de recherche pour le Développement : R6301

DFID Programme : Livestock Production

Organismes de mise en œuvre

Durée : Start Date : 01-05-1995 End Date : 30-04-1996

1.)To bring together existing knowledge of key processes affecting productivity of semi-arid rangeland systems. 2.)To incorporate existing knowledge, together with improved descriptions of animal foraging strategy and diet selection, in models of rangeland function and test whether animal performance and vegetation dynamics can be represented adequately. 3.)To assess the components and processes to which the system is most sensitive and identify where knowledge is lacking. 4.)To identify, in the light of existing knowledge and results of the modelling exercise, management techniques which would repay further development. 5.)To identify field sites where sufficient background data exists for model evaluation, and where experimental work could address key processes about which insufficient is known

Many of the world’s poorest countries are in the arid and semi-arid zone, where the connection between land degradation and livestock management is an acknowledged problem. Improvement of livestock management strategies are needed, but land-use planning is impeded by lack of a framework for predicting how rangeland systems respond to livestock stocking policies, management practices and interactions with wildlife. There are currently no scientific and objective methods of optimizing the long-term utilization of vegetation resources, of matching the mix of animal species to vegetation structure, of accounting for the impact of wildlife or of combining wildlife management goals with pastoralism. Annual and seasonal variability in rainfall is an important cause of instability in semi-arid environments, so rigid stocking policies may increase the risk of vegetation degradation. Accordingly, flexible and opportunistic management practices are needed to increase the sustainable economic yield of rangeland.

Total Cost to DFID : £45,041

Présentation : UKAID

Page publiée le 2 novembre 2015, mise à jour le 22 octobre 2017