Biology and Life Sciences
Received: 18 Aug 2018 , Published: 23 August 2018
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|1||Ghazi El-khidir Mohamed|
This study was conducted at “Abusonoon“ Mountain, approximately 40 km west of Elobied town in Sheikan locality in North Kordofan State , central Sudan. The objectives are to assess rangeland health attributes and indicators. The study concept was based on addressing the main factors of integrated and sustainable rangeland management, including range health as an accumulative result of the different range management practices. Indicators tested in this study included vegetation composition and frequency, ground cover, biomass production, erosion hazards, seed bank and soil integrity such as organic matter. Three sites were selected to represent rangeland types in the study area including flat sand, relatively low land and sand dunes (goz) sites. Five transects were taken in each site based on rele?e method and minimum area theory. In each site a plot of 1Km X 1km was selected and five transects were established inside to determine these indicators. The study revealed the following plant composition of each site: The sandy site was dominated by Fimbristyls dichotomo. The low land site was dominated by Eragrostis tremula, while in the goz site the dominant species was Dactyloctenium aegyptium. The species with high frequencies were Cenchrus spp in sandy site, while Aristida spp, had high frequency in both low and goz sites. Percentage of plant cover was affected by the pattern of the area, where flat sandy site scored 66.3%, low land site scored 71.4% while goz site scored 77%. The litter coverage scored 21.9%, 10.5 and 9% for the flat sandy, low land and goz repectively. No erosion hazard was identified since bare soil was less than 25 %. Productivity as indicated by biomass showed 0.824 ton/ha. for flat sandy site, compared to 1.207 ton/ha. for the depressions and 1.457 ton/ha. for the goz site. Carrying capacity was 109.87 AU/ha./day for sandy site, 160.93 AU /ha./day for the depressions site and 194.27 AU /ha./day for the goz site.
The study ascertained that vegetation cover is healthy in the area so there is only a need for activities of improvements and conservation. Replantation of trees in the area such as Acacia tortilis and, Maerua carssifollia, would be highly appreciated for more vegetation cover and sustainable land conservation.
Ahmed, A. O. (2004). The main ecological components of the management of dryland natural forests. A case study: Um Sunta forest-White Nile State-Sudan), PhD, Sudan University of Science and Technology, College of Forestry and Range Sciences, August 2004.
Barry, W. Gerry E, Colin S, Donna L, Mike A, Mike W, Carcey H, Darlene M, Angela B and Jennifer C. (2005). Rangeland health assessment for grassland, Forest and Tame Pasture. Alberta sustainable resource development. Pub. No. T/044 ISBN Number: 0-7785-2848-0.
Darag A. and Suliman, M. (1988). Training course in Range management and Range improvement. Range and pasture administration (Sudan).
FAO. (1980). Report of the Second FAO/UNFPA Expert Consultation on Land Resources for Populations of the Future. Rome, Italy: Food and Agriculture Organization of the United Nations (FAO),. 369 pp.
G. L. I (Grazing Land Technology Institute) (2003). National Range and pasture Hand Book. Pp 14 – 15
Le Houerou, H. N, and Hoste, C. H. (1979). Rangeland production and Annual Rainfall Relation in the Mediterranean Basein and in Africa Sahelo- Sudanian Zone. Journal Range Management.30 (3):181-189.
Matthew, W. F. and Robert, T. F. M. (1993). Methods for plant sampling, Restoration in the Colorado Desert management Notes, Biology Department Sant Diego state University Sant Diego, C A 92182.
Parker, K. N. (1951). A method for measuring trend in range condition on national forest range. Administration studies, USA Department of Agriculture, forest services, Washington, D. C. 26pp.
Pellant M., Pyke D.A., Shaver P. and Herrick J. E., (2005). Interpreting Indicators of Rangeland Health –Version 3, Technical reference 1734-6. At:Wttp:www.fao.org/docrep/R7488e04.htm
Pyke, D. A., Hervick, J. E., Shaver, P. and Pelant, M. (2003). What is the standard for rangeland health? Proceedings of the VIIth International Rangelands Congress 26t, Durban, South Africa. ISBN Number: 0-958-45348-9.
Reid, E. H., and Love, l. D. (1950). Range –watershed condition and recommendation for management, Elk Ridge and Lower Elk Ridge Cattle Allotments, Roosevelt National Forest, Colorado. U. S. Dept. Agr., Forest service, 123 pp. (proc.).
RTLA, (Range and Training Land Analysis II), (1999). Measuring Vegetation Attributes and Other Indicators of Condition. Technical Reference Manual. USA.
Society for Range Management, (1989a). Glossary of terms used in range management 3ded. Society for Range Management,