Impact of over-grazing on vegetation and physico-chemical characters of soil steppiques in western Algerian

 
 
 
  • Abstract
  • Keywords
  • References
  • PDF
  • Abstract


    The ground at a fundamental regulatory environmental function of water flows or on biological activity. Under anthropogenic influence and change of use changes, mineralogical, physico-chemical and biological soil constituents are processed on the basis of own sensitivity an each type of pedogenesis, altering sometimes sustainably agronomic and environmental functions and in particular the resource in water [1].

    The present study shows the current state endured the steppe area in the municipality of Maamora Wilaya of Saa. The diagnosis made sheds light on a situation that leaves to be desired and was under the influence of spectrum degradation whose origin is anthropogenic. Indeed, ploughing extends and the courses are systematically cleared, thus promoting the extension of the phenomenon of desertification. The operating system Nomad trained overloading of pastures and their degradation. Before this alarming situation and the fragility of the steppe ecosystem supports a new vision is needed and will have to rely on a rigorous planning and management thus projecting from a sustainability perspective.

    Our work has focused on the assessment of the (pastoral) anthropogenic impact at various levels of pressure on vegetation and some physico-chemical characteristics of soils.

    The results showed that a very high anthropozoogenic pressure could be irreversible for the edaphic characteristics of soils and vegetal groups had no time to recover following pressures exerted on them and the particular climatic conditions including lack of water that prevails in these semi-arid.

    Keywords: Constraints, Maamoura, Overgrazing, Placing Defends, Steppe.


  • References


    1. P. Podwojewski, Constituents and properties of soil for a layout use. Effects of the change in use on the constituents and properties of soil . Enabling a leading research University Pierre and Marie Curie,PARIS VI, 2007.
    2. A.L Gibelin and M. Dqu, Anthropogenic climate change over the Mediterranean region simulated by a global variable resolution model, Clim.Dyn. 2003. (20): pp 327-339.
    3. IPCC, Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change , Cambridge University Press, Cambridge, 2007, pp. 996.
    4. U.R.S.A, Studies blueprint of sanitation of the agglomeration of Maamora, wilaya de Saida, 2006.
    5. ONM, National Office of meteorology. Collection of climate data from the wilaya Saida. Daily survey sheets for the period 1990-2013.
    6. J. Braun-Blanquet, European irradiation in the vegetation of the Kroumirie. Comm S.I.G.M.A., 112, 182- 194 .Vegetatio, 1952. 4 (3): p 182-194 http://dx.doi.org/10.1007/BF00297018.
    7. G.Aubert, Methods of soil analysis . CRDP, Marseille, 1978.
    8. D. Soltner, The bases of crop production. The soil and its improvement, 21st Edition. Science and agricultural technology, Sainte-Gemmessur-Loire, France, 2006. (1) : p 23
    9. R.L. Mulvaney, Nitrogen Inorganic Forms. In: Sparks D.L., Page A.L., Helmke P.A., Loeppert R.H., Soltanpoor P.N., Tabatabai M.A., Johnston C.T., Sumner M.E. (eds). Methods of soil analysis, Part 3. Chemical Methods-SSSA Book series no. 5. Madison, Wisconsin: 1996. p 1123-1184.
    10. D.R. Keeney & D.W Nelson, Nitrogen Inorganic forms. In: Page A.L. (ed.), Methods of Soil Analysis. Agronomy Monograph 9, Part 2, 2nd ed. ASA, SSSA, Madison, Wisconsin: 1982. p 643-698.
    11. A. Aidoud, Contribution to the study of steppe ecosystems of the South Oranian . Thesis 3rd cycle, USTHB, Algiers, 1983.
    12. D. Baize ET M.C. Girard, Soil repository. INRA, 1995.
    13. D.G. Neary, C.C. Klopatek, L.F. DeBano, P.F. Ffolliott, Fire effects on belowground sustainability: a review and synthesis. Forest Ecology and Management, 1999, (122):p 51-71. http://dx.doi.org/10.1016/S0378-1127 (99)00032-8.
    14. C. Boix Fayos, The roles of texture and structure in the water retention capacity of burnt Mediterranean soils with varying rainfall. Catena, 1997, (31): p 219-236. http://dx.doi.org/10.1016/S0341-8162 (97)00041-6.
    15. D.W. Johnson and P.S. Curtis, Effects of forest management on soil C and N storage:meta- analysis. Forest Ecol. Manage, 2001, (140) : p 227-238. http://dx.doi.org/10.1016/S0378-1127 (00)00282-6.
    16. FAO, Global forest resources assessment . Main report, FAO Forestry Paper 163.Rome 2010.
    17. W.W. Covington and S.S Sackett, Soil mineral nitrogen changes following prescribed burning in ponderosa pine. Forest Ecol. Manage.1992, (54): p 175-191. http://dx.doi.org/10.1016/0378-1127 (92)90011-W.
    18. W. El Zerey, S.E. Bachir Bouiadjra, M. Benslimane ET K. Mederbal, The steppe ecosystem facing desertification: case of the region of El Bayadh, Algeria. VertigO - The magazine Electronics in environmental sciences. 2009
    19. S. Djebaili, Algerian steppe, phytosociology and ecology , O.P.U ed. Algiers, 1984.
    20. W.D. Willm ET D.W. Chanasyk, Grazing effects on snow accumulation on rough Fescue grasslands. Rangeland Ecology and Management, 2006, (54): p 400-405. http://dx.doi.org/10.2111/05-107R1.1.
    21. W.D.Willms, S.M. McGinn ET J.F. Dormaar, Influence of litter on herbage production in the Mixed Prairie. Journal of Range Management, 1993, (46): p 320-324. http://dx.doi.org/10.2307/4002466.
    22. N. Le Hourou, The impact of the man and his animals on the Mediterranean forest. For Med., 1988, 2 (1): pp. 155-174.

 

View

Download

Article ID: 3206
 
DOI: 10.14419/ijbas.v3i3.3206




Copyright © 2012-2015 Science Publishing Corporation Inc. All rights reserved.