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A recent greening of the Sahel - Trends, patterns and potential causes

  • L Olsson
  • Lars Eklundh
  • Jonas Ardö
Publishing year: 2005
Language: English
Pages: 556-566
Publication/Series: Journal of Arid Environments
Volume: 63
Issue: 3
Document type: Journal article
Publisher: Elsevier

Abstract english

For the last four decades there has been sustained scientific interest in contemporary environmental change in the Sahel (the southern fringe of the Sahara). It suffered several devastating droughts and famines between the late 1960s and early 1990s. Speculation about the climatology of these droughts is unresolved, as is speculation about the effects of land clearance on rainfall and about land degradation in this zone. However, recent findings suggest a consistent trend of increasing vegetation greenness in much of the region. Increasing rainfall over the last few years is certainly one reason, but does not fully explain the change. Other factors, such as land use change and migration, may also contribute. This study investigates the nature of a secular vegetation trend across the Sahel and discusses several potential causative factors.


  • Physical Geography
  • remote sensing
  • desertification
  • vegetation change
  • sahel
  • migration


  • ISSN: 1095-922X
E-mail: jonas [dot] ardo [at] nateko [dot] lu [dot] se


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Dept of Physical Geography and Ecosystem Science


Department of Physical Geography and Ecosystem Science
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