Natural Hazards and Earth System Sciences
Natural Hazards and Earth System Sciences
NHESS
Articles | Volume 25, issue 9
Articles | Volume 25, issue 9
https://doi.org/10.5194/nhess-25-2939-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/nhess-25-2939-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 9
Research article
 | 
01 Sep 2025
Research article |  | 01 Sep 2025

Historical changes in drought characteristics and their impact on vegetation cover over Madagascar

Herijaona Hani-Roge Hundilida Randriatsara, Eva Holtanova, Karim Rizwan, Hassen Babaousmail, Mirindra Finaritra Tanteliniaina Rabezanahary, Kokou Romaric Posset, Donnata Alupot, and Brian Odhiambo Ayugi

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Latest update: 03 Nov 2025
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Short summary
This study aims to analyze the spatiotemporal characteristics of drought (duration, frequency, severity, intensity) over Madagascar during 1981–2022 by using the Standardized Precipitation Index (SPI-3, SPI-6, and SPI-12). Additionally, impacts of drought on vegetation over the studied area were assessed based on an evaluation of the relationship between SPI and the Normalized Difference Vegetation Index (NDVI) during 2000–2022.
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