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Intraannual vegetation dynamic as potential indicator for environmental change in the west African Sahel zone


Leiterer, Reik; Reiche, Johannes; Thiel, Christian; Schmullius, Christiane (2009). Intraannual vegetation dynamic as potential indicator for environmental change in the west African Sahel zone. In: 33rd ISRSE Symposium, Stresa (I), 4 May 2009 - 8 May 2009, 1-4.

Abstract

Studies identified desertification and land degradation as a possible cause for persistent drought in the Sahel. The specific vegetation dynamics in the Sahel are good indicators for this kind of environmental change. Due to the scattered availability of ground truth data in huge parts of the Sahel, EO data might provide the only reliable means for sound analysis and detection of long-term changes. This study focuses on vegetation dynamic monitoring over the Iullemeden Aquifer (SAI) using ENVISAT MERIS data. The biophysical vegetation variables fAPAR and NDVI were analysed in terms of the vegetation changes within one growth period. It turned out that these informations are important indicators to make reliable statements on ecological changes. Considering that in future similar products are available, it’s an outstanding tool to monitor the whole Sahel zone with a high temporal resolution to analyse vegetation dynamics in terms of climate change and human impact.

Abstract

Studies identified desertification and land degradation as a possible cause for persistent drought in the Sahel. The specific vegetation dynamics in the Sahel are good indicators for this kind of environmental change. Due to the scattered availability of ground truth data in huge parts of the Sahel, EO data might provide the only reliable means for sound analysis and detection of long-term changes. This study focuses on vegetation dynamic monitoring over the Iullemeden Aquifer (SAI) using ENVISAT MERIS data. The biophysical vegetation variables fAPAR and NDVI were analysed in terms of the vegetation changes within one growth period. It turned out that these informations are important indicators to make reliable statements on ecological changes. Considering that in future similar products are available, it’s an outstanding tool to monitor the whole Sahel zone with a high temporal resolution to analyse vegetation dynamics in terms of climate change and human impact.

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Additional indexing

Item Type:Conference or Workshop Item (Paper), not refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Geography
Dewey Decimal Classification:910 Geography & travel
Language:English
Event End Date:8 May 2009
Deposited On:16 Apr 2013 08:13
Last Modified:05 Apr 2016 16:44
Related URLs:http://ec.europa.eu/dgs/jrc/index.cfm?id=5400&obj_id=2210&dt_code=EVN&lang=en (Organisation)

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