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

Summary, in 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.

• Author: L Olsson; Lars Eklundh; Jonas Ardö
• Department/s: Dept of Physical Geography and Ecosystem Science
• Publishing year: 2005
• Language: English
• Pages: 556-566
• Publication/Series: Journal of Arid Environments
• Volume: 63
• Issue: 3
• Links: http://dx.doi.org/10.1016/j.jaridenv.2005.03.008
• Document type: Journal article
• Publisher: Elsevier
• Topic: Physical Geography
• Keywords: remote sensing; desertification; vegetation change; sahel; migration
• Status: Published
• ISBN/ISSN/Other: ISSN: 1095-922X