Estimating herbaceous aboveground biomass using an indirect method based on the herbaceous layer characteristic

Diatta Ousmane, N'Goran Adjoua Ange-Jokébed, Fassinou Cofélas, Salgado Paulo, Ndiaye Ousmane, Diatta Sekouna, Ngom Daouda, Tagesson Torbern, Taugourdeau Simon. 2024. Estimating herbaceous aboveground biomass using an indirect method based on the herbaceous layer characteristic. Biomass, 4 (4), n.spéc. Innovative Systems for Biomass Crop Production and Use : 1191-1199.

Résumé : Background: In the Sahel, one of the largest semi-arid areas in the world, pastoral livestock is the main source of protein for the local population. The quantification of herbaceous biomass in the Sahelian rangelands is of major importance since it provides food for the livestock. The main method used to monitor the biomass consists of cutting, drying, and weighting it. However, indirect methods are available and allow a reliable biomass estimation. Methods: In this study, we developed a non-destructive method for estimating herbaceous biomass for the Sahelian rangelands based on measurements of its height and coverage. Results: Results show that the fit is better in the fenced area. The volume index (height × coverage) provides a better biomass prediction with relative differences between measured and predicted biomass of 11% in 2017 and 8% in 2019. Conclusions: Monitoring herbaceous biomass without destroying it is possible by measuring only its height and coverage.

Mots-clés libres : Sahel, Fourrage, Biomass, Coverage, Plant height, Volume index, Regression analysis, Natural rangelands management, Ferlo

Auteurs et affiliations

• Diatta Ousmane, ISRA (SEN)
• N'Goran Adjoua Ange-Jokébed, CIRAD-ES-UMR SELMET (FRA)
• Fassinou Cofélas, UCAD (SEN)
• Salgado Paulo, CIRAD-ES-UMR SELMET (SEN)
• Ndiaye Ousmane, ISRA (SEN)
• Diatta Sekouna, UCAD (SEN)
• Ngom Daouda, UCAD (SEN)
• Tagesson Torbern, Lund University (SWE)
• Taugourdeau Simon, CIRAD-ES-UMR SELMET (SEN) ORCID: 0000-0001-6561-3228 - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/611011/)

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