7659_xml
20210129080000
assa
nadiag@assaf.org.za
assa
South African Journal of Science
S. Afr. J. Sci
1996-7489
01292021
117
1/2
Identified main fire hotspots and seasons in Côte d’Ivoire (West Africa) using MODIS fire data
Tionhonkélé D.
Soro
Laboratory of Ecology and Sustainable Development, Faculty of Natural Sciences, Nangui Abrogoua University, Abidjan, Côte d’Ivoire
https://orcid.org/0000-0003-2195-6194
Moussa
Koné
Laboratory of Ecology and Sustainable Development, Faculty of Natural Sciences, Nangui Abrogoua University, Abidjan, Côte d’Ivoire
Aya B.
N’Dri
Laboratory of Ecology and Sustainable Development, Faculty of Natural Sciences, Nangui Abrogoua University, Abidjan, Côte d’Ivoire
https://orcid.org/0000-0002-6333-6279
Evelyne T.
N’Datchoh
Atmospheric Physics Laboratory, Faculty of Structure of Matter and Technology Sciences, Félix Houphouët Boigny University of Cocody, Abidjan, Côte d’Ivoire
https://orcid.org/0000-0003-3139-6581
Biomass burning has become more frequent and widespread worldwide, with a significant proportion occurring in tropical Africa. Fire dynamics have been generally studied at global or regional scales. At local scale, however, fire impacts can be severe or catastrophic, suggesting local analyses are warranted. This study aimed to characterise the spatio-temporal variations of vegetation fires and identify the main fire hotspots in Côte d’Ivoire, a country of West Africa, one of the world’s burn centres. Using MODISderived fire data over a 10-year period (2007–2016), the number of fire days, active fires and fire density were assessed across the entire country. In the southern part dominated by forests, fire activity was low. Three main fire hotspots were identified between 2°30’–8°30’W and 7°00’–10°30’N in the North-West, North-East and Central areas all dominated by savannas. In these areas, Bafing, Bounkani and Hambol regions recorded the highest fire activity where fire density was 0.4±0.02, 0.28±0.02 and 0.18±0.01 fires/km²/year, respectively. At national scale, the annual fire period stretched from October to April with 91% of fires occurring between December and February, with a peak in January. Over the decade, there was a decreasing trend of fire activity. Fire density also was negatively correlated with rainfall >1000 mm for the synchronic analysis, whereas fire density was positively correlated with rainfall in the previous years. Results suggest that the positive relationship between the previous year’s rainfall and fire activity could operate on a cycle from 1 to 4 years.
01292021
1
10.17159/sajs.2016/crossmark
sajs.co.za
false
2019-11-21
2020-07-06
2021-01-29
Campus France
http://dx.doi.org/10.13039/501100006537
mopga-short-0000000184
https://creativecommons.org/licenses/by/4.0/
10.17159/sajs.2021/7659
20210129080000
https://www.sajs.co.za/article/view/7659
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https://www.sajs.co.za/article/view/7659/10818
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https://www.sajs.co.za/article/view/7659/10818
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https://www.sajs.co.za/article/view/7659/10818
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https://www.sajs.co.za/article/view/7659/10818
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https://www.sajs.co.za/article/view/7659/10818
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https://www.sajs.co.za/article/view/7659/10818
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https://www.sajs.co.za/article/view/7659/10818