Impacts of Watershed Interventions on the Status of Bush Encroachment, Rangeland Productivity and Herbaceous Species Composition in the Rangelands in Borena Pastoralist Dry Land Area
Keywords:Rangeland, Bush encroachment, Watershed management
Rangeland systems of arid and semi-arid tropics are characterized by highly variable and low rainfall, low primary productivity, low population density, highly variable and low rainfall, lack of access to market and infrastructure and high transaction costs. Livestock production in these areas is also constrained by low productivity, degraded natural resources and widespread poverty. A watershed, or catchment, is defined as an area from which all water drains into a common outlet. The Borana pastoralists developed exceptionally efficient system of range land management strategies like fire regulated tree-grass dynamic and herd mobility appropriate to deal with the erratic rain fall in the dry lands. Description of study area: This study was under taken in pastoral districts of borana zone, more focus on Moyale, Dhas, Dillo, Dirre and Yabello districts of the Borana zone of Oromia Regional State. A vegetation survey was conducted at peak production seasons. The watershed was stratified into intervention watershed village (IWV) and non-intervention watershed village (NIWV). The data collected from the socioeconomic survey was summarized and analyzed using SPSS version 20.0 (Statistical package for social science) software. From results As a consequence pastoralists could get various advantages such as reducing the effects of diseases outbreak, cope with feed and water shortages. Conclusion The major livestock feed resources were natural pasture, bushes and shrubs, crop residues, crop aftermath and fallow land. Recommendations Reducing livestock number by providing market facilities and improving productivity per head could decrease the contribution of overgrazing and expansion of bush encroachment. Therefore the overall objective of the present study was to assess the impacts of watershed management on the status of bush encroachment, rangeland productivity and herbaceous species composition in the borana rangelands.
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