Monitoring the magnitude of land-cover change around the southern limits of the Sahara
Monitoring the magnitude of land-cover change around the southern limits of the Sahara
Studies of land-cover change using satellite remote sensing are often constrained to depict land-cover conversions only, with the equally important modifications undetected or misrepresented, resulting in significant error. Desert fluctuations within the Sahel were examined using an approach that indicated the magnitude of land-cover changes. This showed that the conventional post-classification comparison method of change detection appeared to underestimate the area of land-cover change and, where a change was detected, typically overestimate its magnitude. At the regional scale, the land-cover changes detected were strongly related to rainfall variability. This relationship did not, however, explain changes at a finer spatial scale and indicated that dryland degradation, and its causes, may remain far from understood.
841-847
Foody, G.M.
06e50027-603d-4a5b-88f5-af2bb6235a37
2001
Foody, G.M.
06e50027-603d-4a5b-88f5-af2bb6235a37
Foody, G.M.
(2001)
Monitoring the magnitude of land-cover change around the southern limits of the Sahara.
Photogrammetric Engineering and Remote Sensing, 67 (7), .
Abstract
Studies of land-cover change using satellite remote sensing are often constrained to depict land-cover conversions only, with the equally important modifications undetected or misrepresented, resulting in significant error. Desert fluctuations within the Sahel were examined using an approach that indicated the magnitude of land-cover changes. This showed that the conventional post-classification comparison method of change detection appeared to underestimate the area of land-cover change and, where a change was detected, typically overestimate its magnitude. At the regional scale, the land-cover changes detected were strongly related to rainfall variability. This relationship did not, however, explain changes at a finer spatial scale and indicated that dryland degradation, and its causes, may remain far from understood.
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Published date: 2001
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Local EPrints ID: 16133
URI: http://eprints.soton.ac.uk/id/eprint/16133
ISSN: 0099-1112
PURE UUID: 3e10c1fb-17ed-42d6-a564-f9e908fa7fb1
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Date deposited: 21 Jun 2005
Last modified: 22 Jul 2022 20:24
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G.M. Foody
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