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Recent trends in vegetation dynamics in the African Sahel and their relationship to climate
Open accessAbstract
Contrary to assertions of widespread irreversible desertification in the African Sahel, a recent increase in seasonal greenness over large areas of the Sahel has been observed, which has been interpreted as a recovery from the great Sahelian droughts. This research investigates temporal and spatial patterns of vegetation greenness and rainfall variability in the African Sahel and their interrelationships based on analyses of Normalized Difference Vegetation Index (NDVI) time series for the period 1982–2003 and gridded satellite rainfall estimates. While rainfall emerges as the dominant causative factor for the increase in vegetation greenness, there is evidence of another causative factor, hypothetically a human-induced change superimposed on the climate trend.
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Cites
Oceanic forcing of Sahel rainfall on interannual to interdecadal time scales.
Giannini, A., Saravanan, R., & Chang, P. (2003) · Science · doi:10.1126/science.1089357 · Cited by 1,058
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Nicholson, S. E. (2013) · ISRN Meteorology · doi:10.1155/2013/453521 · Cited by 742
A review of environmental droughts: Increased risk under global warming?
Vicente-Serrano, S. M., Quiring, S. M., Peña-Gallardo, M., Yuan, S., & Domínguez-Castro, F. (2020) · Earth-Science Reviews · doi:10.1016/j.earscirev.2019.102953 · Cited by 733
Rainfall trends in the African Sahel: Characteristics, processes, and causes
Biasutti, M. (2019) · WIREs Climate Change · doi:10.1002/wcc.591 · Cited by 336
A full greenhouse gases budget of Africa: Synthesis, uncertainties, and vulnerabilities
Valentini, R., Arneth, A., Bombelli, A., Castaldi, S., Cazzolla Gatti, R., Chevallier, F., Ciais, P., Grieco, E., Hartmann, J., Henry, M., et al. (2014) · Biogeosciences · doi:10.5194/bg-11-381-2014 · Cited by 248
Metadata
- Authors
- Herrmann, S. M., Anyamba, A., & Tucker, C. J.
- Venue
- Global Environmental Change
- Publisher
- Elsevier BV
- Published
- 2005-12
- Volume
- 15
- Issue
- 4
- Pages
- 394-404
- ISSN
- 0959-3780 (ISSN-L)
- OpenAlex
- W1975999098
- Cited by
- 862
- References
- 1
- FWCI
- 13.16
- Type
- journal article
- Language
- en
- Open access
- gold
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- Herrmann, S. M., Anyamba, A., & Tucker, C. J. (2005). Recent trends in vegetation dynamics in the African Sahel and their relationship to climate. Global Environmental Change. https://doi.org/10.1016/j.gloenvcha.2005.08.004
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
