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Spatiotemporal Response of Vegetation to Rainfall and Air Temperature Fluctuations in the Sahel: Case Study in the Forest Reserve of Fina, Mali

Author

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  • Karamoko Sanogo

    (Laboratoire d’Optique, de Spectroscopie et des Sciences de l’atmosphère (LOSSA), Université des Sciences de Techniques et de Technologie de Bamako, Bamako BPE 3206, Mali
    International Crops Research Institute for the Semi-Arid Tropics (ICRISAT-Mali), Bamako BP 320, Mali)

  • Birhanu Zemadim Birhanu

    (International Crops Research Institute for the Semi-Arid Tropics (ICRISAT-Mali), Bamako BP 320, Mali)

  • Souleymane Sanogo

    (Laboratoire d’Optique, de Spectroscopie et des Sciences de l’atmosphère (LOSSA), Université des Sciences de Techniques et de Technologie de Bamako, Bamako BPE 3206, Mali)

  • Abdulkadir Aishetu

    (Department of Geography, Bosso Campus, Federal University of Technology, Minna PMB 65, Nigeria)

  • Abdramane Ba

    (Laboratoire d’Optique, de Spectroscopie et des Sciences de l’atmosphère (LOSSA), Université des Sciences de Techniques et de Technologie de Bamako, Bamako BPE 3206, Mali)

Abstract

Forests constitute a key component of the Earth system but the sustainability of the forest reserves in the semi-arid zone is a real concern since its vegetation is very sensitive to the climate fluctuation. The understanding of the mechanisms for the vegetation–climate interaction is poorly studied in the context of African Sahel. In this study, the characteristics of the vegetation response to the fluctuations of precipitation and temperature is determined for the forest reserve of Fina. Rainfall estimates, air temperature and NDVI were re-gridded to a same spatial resolution and standardized with respect to their respective long-term mean. Lag-correlations analysis was used to estimate lag times between changes of climate variables and vegetation response at both seasonal and interannual bases. Results show increasing tendency of NDVI started from the 1990s coinciding the recovery of the rainfall from the 1980s drought, and the obtained correlation (r = 0.66) is statistically significant ( p value < 0.01). The strongest responses of vegetation to rainfall and temperature fluctuations were found after 30 and 15 days, respectively. Moreover, at a shorter time lag (e.g., 15 days), more pronounced vegetation responses to both rainfall and temperature were found in agriculturally dominated land while at a longer time lag (e.g., 30 days), a stronger response was observed in Bare-dominated land. The vegetation response to the climate fluctuation is modulated by the land-use/cover dynamics.

Suggested Citation

  • Karamoko Sanogo & Birhanu Zemadim Birhanu & Souleymane Sanogo & Abdulkadir Aishetu & Abdramane Ba, 2021. "Spatiotemporal Response of Vegetation to Rainfall and Air Temperature Fluctuations in the Sahel: Case Study in the Forest Reserve of Fina, Mali," Sustainability, MDPI, vol. 13(11), pages 1-17, June.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:11:p:6250-:d:567117
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    References listed on IDEAS

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    1. Ellen Wohl & Ana Barros & Nathaniel Brunsell & Nick A. Chappell & Michael Coe & Thomas Giambelluca & Steven Goldsmith & Russell Harmon & Jan M. H. Hendrickx & James Juvik & Jeffrey McDonnell & Fred Og, 2012. "The hydrology of the humid tropics," Nature Climate Change, Nature, vol. 2(9), pages 655-662, September.
    2. repec:ulb:ulbeco:2013/115021 is not listed on IDEAS
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    Cited by:

    1. Adam Płachciak & Jakub Marcinkowski, 2022. "Humanitarian Assistance in G5 Sahel: Social Sustainability Context of Macrologistics Potential," Sustainability, MDPI, vol. 14(14), pages 1-25, July.
    2. Nagalé Dit Mahamadou Sanogo & Sidzabda Djibril Dayamba & Fabrice G. Renaud & Melanie Feurer, 2022. "From Wooded Savannah to Farmland and Settlement: Population Growth, Drought, Energy Needs and Cotton Price Incentives Driving Changes in Wacoro, Mali," Land, MDPI, vol. 11(12), pages 1-16, November.

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