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Effect of Three Water Harvesting Techniques on Forage Shrub and Natural Vegetation in the Badia of Jordan

Author(s): Hani M. Saoub | Raed Al Tabini | Khaled Al Khalidi | Jamal Y. Ayad

Journal: International Journal of Botany
ISSN 1811-9700

Volume: 7;
Issue: 3;
Start page: 230;
Date: 2011;
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Keywords: biomass | Salsola | micro-catchment | diversity | vegetation cover | Atriplex

The current study aimed to investigate the effect of three water harvesting techniques on the establishment of three forage shrubs and productivity of natural vegetation at Tal Rimah (N32 17' E36 53'), North-eastern Badia of Jordan. Three forage shrub species (Atriplex nummularia, Atriplex halimus, Salsola vermiculata) were planted. The effect of three water-harvesting techniques: Contour furrows, crescent-shaped and V-shaped micro-catchments was studied on biomass production and natural vegetation. The results showed that using contour furrows gave higher shrub biomass when compared to the crested and v-shaped techniques. Moreover, both Atriplex species produced higher average biomass (350 kg ha-1) than S. vermiculata (62 kg ha-1), which was clearly shown in 2006. Protection of the study site for 3-4 years improved shrub production of A. nummularia from 23 kg ha-1 in 2002 to 37 kg ha-1 in 2006. Plant survey of the natural vegetation also indicated an increase in the number of families (18) and species (51) in the protected areas. Concluding that, for rangeland rehabilitation in the Badia of Jordan, it is important to establish reserves with the emphasis on sustainable management such as protection from grazing for 2-3 years and using water-harvesting techniques.
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