Land Degradation in Drylands: An Ecogeomorphological Approach

  • Eva Nora Mueller
  • John Wainwright
  • Anthony J. Parsons
  • Laura Turnbull
Chapter

Abstract

Land degradation is particularly pernicious and pervasive in dryland regions. The dependency of local livelihoods on the services provided by ecosystems is greater in drylands than in any other ecosystems, rendering their inhabitants exceptionally vulnerable to land degradation. Current approaches to managing drylands to mitigate land degradation often fail to produce significant improvements because local knowledge is often undervalued and the complexity of underlying processes leading to land degradation is still not well understood. There remains a need to uncover the underlying dynamics and characteristic responses to environmental drivers and human-induced disturbances. The physical processes associated with land degradation in drylands fall at the interface of ecology and geomorphology. Regrettably, the disciplines of ecology and geomorphology have largely performed research in isolation of each other. The disciplines, in common with most, have a centrifugal perspective, looking outwards from themselves towards cognate disciplines. To address multidisciplinary scientific questions – such as land degradation in drylands – a centripetal approach is required in which the problem is the focus towards which the disciplines direct their attention. The purpose of this book is to take such a centripetal approach towards the understanding of the process linkages between ecogeomorphological dryland processes and patterns to better our understanding of land degradation, and to overcome the lack of interdisciplinarity in current dryland research.

Keywords

Ecosystem Service Land Degradation United Nations Convention Sustainable Land Management Combat Desertification 
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.

Notes

Acknowledgments

This chapter is a contribution to the book Patterns of Land Degradation in Drylands: Understanding Self-Organised Ecogeomorphic Systems, which is the outcome of an ESF-funded Exploratory Workshop – “Self-organized ecogeomorphic systems: confronting models with data for land degradation in drylands” – which was held in Potsdam, Germany, 7–10 June 2010.

References

  1. Barbier N, Couteron P, Lejoly J, Deblauwe V, Lejeune O (2006) Self-organised vegetation patterning as fingerprint of climate and human impact on semiarid ecosystems. J Ecol 94:537–547CrossRefGoogle Scholar
  2. Bracken LJ, Croke J (2007) The concept of hydrological connectivity and its contribution to understanding runoff-dominated geomorphic systems. Hydrol Process 21:1749–1763. doi: 10D1002/hyp.6313 CrossRefGoogle Scholar
  3. D’Odorico P, Porporato A (2006) Ecohydrology of arid and semiarid ecosystems: an introduction. In: D’Odorico P, Porporato A (eds) Dryland ecohydrology. Springer, Berlin, pp 1–10CrossRefGoogle Scholar
  4. Deblauwe V, Couteron P, Lejeune O, Bogaert J, Barbier N (2011) Environmental modulation of self-organized periodic vegetation patterns in Sudan. Ecography 34:990–1001CrossRefGoogle Scholar
  5. Dregne HE, Chou N (1992) Global desertification and costs. In: Dregne HE (ed) Degradation and restoration of arid lands. Texas Tech University, Lubbock, pp 249–282Google Scholar
  6. IPCC (Intergovernmental Panel on Climate Change) (2001) Climate change 2001: Working Group I: the scientific basis, summary for policymakers. Cambridge University Press, CambridgeGoogle Scholar
  7. LADA Land Degradation Assessment in Drylands project (2011) FAO Food and Agriculture Organisation of the United Nations. http://www.fao.org/nr/lada/. Accessed 8 Aug 2012
  8. Lal R (2001) Potential of desertification control to sequester carbon and mitigate the greenhouse effect. Clim Chang 51:35–72CrossRefGoogle Scholar
  9. Laycock WA (1991) Stable states and thresholds of range condition on North American rangelands: a viewpoint. J Range Manage 44:427–433CrossRefGoogle Scholar
  10. Lepers E (2003) Synthesis of the main areas of land-cover and land-use change. Millennium Ecosystem Assessment, Final Report. http://www.geo.ucl.ac.be/LUCC/lucc.html. Accessed 8 Aug 2012
  11. Ludwig JA, Wilcox BP, Breshears DD, Tongway DJ, Imeson AC (2005) Vegetation patches and runoff-erosion as interacting ecohdydrological processes in semiarid landscapes. Ecology 86:288–297CrossRefGoogle Scholar
  12. Meehl GA, Stocker TF, Collins WD, Friedlingstein P, Gaye AT, Gregory JM, Kitoh A, Knutti R, Murphy JM, Noda A, Raper SCB, Watterson IG, Weaver AJ, Zhao ZC (2007) Global climate projections. In: Solomon S, Qin D, Manning M, Chen Z, Marquis M, Averyt KB, Tignor M, Miller HL (eds) 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, CambridgeGoogle Scholar
  13. Middleton N, Thomas D (1997) World atlas of desertification. Arnold, LondonGoogle Scholar
  14. Millennium Ecosystem Assessment (MEA) (2005) Ecosystems and human well-being: biodiversity synthesis. World Resources Institute, Washington, DCGoogle Scholar
  15. Okin GS, Parsons AJ, Wainwright J, Herrick JE, Bestelmeyer BT, Peters DC, Fredrickson EL (2009) Do changes in connectivity explain desertification? Bioscience 59:237–244CrossRefGoogle Scholar
  16. Painter TH, Deems JS, Belnap J, Hamlet AF, Landry CC, Udall B (2010) Response of Colorado River runoff to dust radiative forcing in snow. Proc Natl Acad Sci U S A 107:17125–17130CrossRefGoogle Scholar
  17. Parsons AJ, Abrahams AD (eds) (2009) Geomorphology of desert environments, 2nd edn. Springer, DordrechtGoogle Scholar
  18. Reinhardt L, Jerolmack D, Cardinale BJ, Vanacker V, Wright J (2010) Dynamic interactions of life and its landscape: feedbacks at the interface of geomorphology and ecology. Earth Surf Process Landf 35:78–101CrossRefGoogle Scholar
  19. Renschler C, Doyle MW, Thoms M (2007) Geomorphology and ecosystems: challenges and keys for success in bridging disciplines. Geomorphology 89:1–8CrossRefGoogle Scholar
  20. Reynolds JF, Stafford Smith DM, Lambin EF, Turner BL, Mortimore M, Batterbury SPJ, Thomas E, Downing TE, Dowlatabadi H, Fernández RJ, Herrick JE, Huber-Sannwald E, Jiang H, Leemans R, Lynam T, Maestre FT, Ayarza M, Walker B (2007) Global desertification: building a science for dryland development. Science 316:847–851. doi: 10.1126/science.1131634 CrossRefGoogle Scholar
  21. Schlesinger WH, Reynolds JF, Cunningham GL, Huenneke LF, Jarrell WM, Virginia RA, Whitford WG (1990) Biological feedbacks in global desertification. Science 247:1043–1048CrossRefGoogle Scholar
  22. Taylor PD, Fahrig L, Henein K, Merriam G (1993) Connectivity is a vital element of landscape structure. Oikos 68:571–573CrossRefGoogle Scholar
  23. Thornes JB (ed) (1990) Vegetation and erosion: processes and environments. Wiley, ChichesterGoogle Scholar
  24. Turnbull L, Wainwright J, Brazier RE (2008) A conceptual framework for understanding semi-arid land degradation: ecohydrological interactions across multiple-space and time scales. Ecohydrology 1(1):23–34CrossRefGoogle Scholar
  25. Turnbull L, Wilcox BP, Belnap J, Ravi S, D’Odorico P, Childers D, Gwenzi W, Okin G, Wainwright J, Caylor KK, Sankey T (2012) Understanding the role of ecohydrological feedbacks in ecosystem state change in drylands. Ecohydrology 5:174–183CrossRefGoogle Scholar
  26. UNCCD (1994) United Nations Convention to Combat Desertification (UNCCD). United Nations, New YorkGoogle Scholar
  27. United Nations (2008) World population prospects. The 2008 revision. United Nations, New YorkGoogle Scholar
  28. Wainwright J (2009) Desert ecogeomorphology. In: Parsons AJ, Abrahams AD (eds) Geomorphology of desert environments, 2nd ed. Springer, Dordrecht, pp 21–66CrossRefGoogle Scholar
  29. Wainwright J, Parsons AJ (2010) Classics in physical geography revisited. Thornes, J.B. 1985: The ecology of erosion. Geography 70:222–235. Prog Phys Geogr 34(3):399–408CrossRefGoogle Scholar
  30. Wainwright J, Parsons AJ, Schlesinger WH, Abrahams AD (2002) Hydrology-vegetation interactions in areas of discontinuous flow on a semi-arid bajada, Southern New Mexico. J Arid Environ 51:319–338CrossRefGoogle Scholar
  31. Wainwright J, Turnbull L, Ibrahim TG, Lexartza-Artza I, Thornton SF, Brazier RE (2011) Linking environmental regimes, space and time: interpretations of structural and functional connectivity. Geomorphology 126(3–4):387–404CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • Eva Nora Mueller
    • 1
  • John Wainwright
    • 2
  • Anthony J. Parsons
    • 4
  • Laura Turnbull
    • 3
  1. 1.Institute of Earth and Environmental ScienceUniversity of PotsdamPotsdamGermany
  2. 2.Department of GeographyUniversity of DurhamDurhamUK
  3. 3.Institute of Hazards, Risk and Resilience, Department of GeographyDurham UniversityDurhamUK
  4. 4.Sheffield Centre for International Drylands ResearchUniversity of SheffieldSheffieldUK

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