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Reversed Desertification on Sand Dunes Along the Sinai/Negev Border

  • Haim Tsoar
  • Victor Goldsmith
  • Steve Schoenhaus
  • Keith Clarke
  • Arnon Karnieli

Abstract

Changes in the Israeli/Egyptian border since 1948 have affected the land use patterns of the Bedouin tribes inhabiting these areas. These changing patterns are clearly discerned from aerial photographs and satellite images in this area of extensive linear dunes. The most recent change occurred after Israel’s withdrawal from the Sinai in 1982. Field observations show that the vegetation in the Negev recovered from overgrazing in a very short time, with a 180% increase in the number of Negev shrubs, coincident with a continued decrease in the number of shrubs on the Sinai side of the border. Analysis of the reflectance of the Landsat-MSS for the recovery years (1984, 1987, and 1989) shows a statistically significant difference between the two sides of the border for the four MSS bands. However, the spectral brightness curves of the four bands failed to reveal any specific “signature” typical for vegetation. Field measurements with a spectrometer indicate that the curve shape of the reflectance of the Landsat-MSS images is swayed by the biogenic crust in the Negev that makes the well known contrast in albedo with Sinai.

Keywords

Aerial Photograph Sand Dune Sandy Desert Dune Area Crust Cover 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Adams, R., Adams, M., Willens, A., and Willens, A. (1978) Dry Lands: Man and Plants. The Architectural Press, London.Google Scholar
  2. Balling, R. C. (1988) The climatic impact of a Sonoran vegetation discontinuity. Climatic Change, v. 13, p. 99-109.CrossRefGoogle Scholar
  3. Charney, J. G. (1975) Dynamics of deserts and drought in the Sahel. Quaternary Journal of the Royal Meteorological Society, v. 101, p. 193-202.CrossRefGoogle Scholar
  4. Danin, A. (1983) Desert Vegetation of Israel and Sinai. Cana, Jerusalem.Google Scholar
  5. Danin, A. (1991) Plant adaptation in desert dunes. Journal of Arid Environments, v. 21, p. 193-212.Google Scholar
  6. Danin, A., Bar-Or, Y., Dor, I. and Yisraeli, T. (1989) The role of cyanobacteria in stabilization of sand dunes in southern Israel. Ecologica Mediterranea, v. 15, p. 55-64.Google Scholar
  7. Gardner, R., and Pye, K. (1981) Nature, origin and palaeoenvironmental significance.of red coastal and desert dune sands. Progress in Physical Geography, v. 5, p. 514-534.CrossRefGoogle Scholar
  8. Helldén, U. (1991) Desertification—time for an assessment? Ambio, v. 20, p. 372-383.Google Scholar
  9. Lowman, P. D. (1966) The Earth from orbit. National Geographic, v. 130, p. 645-671.Google Scholar
  10. Meir, A., Tsoar, H., and Khawalde, O. (1992) The Impact of Changes in Bedouin Land Use on the Physical Environment Along the Egyptian-Israeli Border Since the 1940s. Research Report submitted to Jo Alon Regional Study Center, Department of Geography, Ben-Gurion University of the Negev, Beer Sheva. (in Hebrew)Google Scholar
  11. Muehlberger, W. R., and Wilmarth, V. R. (1977) The shuttle era: A challenge to the Earth scientist. American Scientist, v. 65, p. 152-158.Google Scholar
  12. Noy-Meir, I., and Seligman, N. G. (1979) Management of semi-arid ecosystems in Israel. In B.H. Walker (ed.) Management of Semi-Arid Ecosystems. Elsevier, Amsterdam, p. 113-160.Google Scholar
  13. Otterman, J. (1974) Baring high-albedo soils by overgrazing: A hypothesized desertification mechanism. Science, v. 186, p. 531-533.CrossRefGoogle Scholar
  14. Otterman, J. (1981) Satellite and field studies of man’s impact on the surface in and regions. Tellus, v. 33, p. 68-77.CrossRefGoogle Scholar
  15. Otterman, J., Manes, A., Rubin, S., Alpert, P., and Starr, D. O. (1990) An increase of early rains in southern Israel following land-use change? Boundary-Layer Meteorology, v. 53, p. 333-351.CrossRefGoogle Scholar
  16. Otterman, J., and Tucker, C. J. (1985) Satellite measurements of surface albedo and temperatures in a semi-desert. Journal of Climate and Applied Meteorology, v. 24, p. 228-235.CrossRefGoogle Scholar
  17. Otterman, J., Waisel, Y., and Rosenberg, E. (1975) Western Negev and Sinai ecosystems: Comparative study of vegetation, albedo, and temperatures. Agro-Ecosystem, v. 2, p. 47-59.CrossRefGoogle Scholar
  18. Prince, S. D., Justice, C. O., and Los, S. O. (1990) Remote Sensing of the Sahelian Environment. Technical Centre for Agricultural and Rural Cooperation, Brussels.Google Scholar
  19. Reichelt, R. (1989) Desertification in the Sahel: The exposing of the “old erg” of an earlier Sahara. Natural Resources and Development, v. 30, p. 104-113.Google Scholar
  20. Siegal, B. S., and Goetz, A.F.H. (1977) Effect of vegetation on rock and soil type discrimination. Photogrammetric Engineering and Remote Sensing, v. 43, p. 191-196.Google Scholar
  21. Silk, J. (1979) Statistical Concepts in Geography. George Allen & Unwin, London.Google Scholar
  22. Tsoar, H. (1989) Linear dune-forms and formation. Progress in Physical Geography, v. 13, p. 507-528.CrossRefGoogle Scholar
  23. Tsoar, H. (1990) The ecological background, deterioration and reclamation of desert dune sand. Agriculture, Ecosystems and Environment, v. 33, p. 147-170.CrossRefGoogle Scholar
  24. Tsoar, H., and Willer, J. T. (1986) The role of vegetation in the formation of linear sand dunes. In W. G. Nickling (ed.) Aeolian Geomorphology. Allen & Unwin, Boston, p. 75-95.Google Scholar
  25. Waisel, Y. (1986) Interactions among plants, man and climate: Historical evidence from Israel. Proceedings of the Royal Society of Edinburgh, v. 89B, p. 255-264.Google Scholar
  26. Warren, A., and Harrison, C. M. (1984) People and the ecosystem: Biogeography as a study of ecology and culture. Geoforum, v. 15, p. 365-381.CrossRefGoogle Scholar
  27. Wonnacott, T. H., and Wonnacott, R. J. (1977) Introductory Statistics for Business and Economics. John Wiley & Sons, New York.Google Scholar

Copyright information

© Vatche P. Tachakerian 1995

Authors and Affiliations

  • Haim Tsoar
    • 1
  • Victor Goldsmith
    • 2
  • Steve Schoenhaus
    • 2
  • Keith Clarke
    • 2
  • Arnon Karnieli
    • 3
  1. 1.Department of Geography and Environmental DevelopmentBen-Gurion University of the NegevIsrael
  2. 2.Department of Geology and GeographyHunter College of The City University of New YorkUSA
  3. 3.Remote Sensing LaboratoryBen-Gurion University of the NegevIsrael

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