7 October 2011 Evaluation of remotely sensed DMP product using multi-year field measurements of biomass in West Africa
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Abstract
The Sahelian belt of West Africa is a region characterized by wide climate variations, which can in turn affect the survival of local populations especially in rangeland, as happened during the dramatic food crisis in the 70-80s caused by severe drought. This work has been carried out in the framework of the EU FP7 Geoland2 project as a contribution to the ECOWAS component (Economic Community Of West African States) of the AMESD (African Monitoring of the Environment for Sustainable Development) programme with the purpose of establishing the reliability of Dry Matter Productivity (DMP) developed by Flemish Institute for Technological Research (VITO), a spatial estimation of dry matter (DM) obtained from remotely sensed data. DMP can be of great help in monitoring savanna pasturelands in a region characterized by food insecurity and a significant variability of biomass production, linked to climate variations, which can in turn affect the survival of local populations. The evaluation of DMP was carried out thanks to the Centre de Suivi Ecologique (CSE) and Action Contre la Fame (ACF), the partners who provided the field biomass measurements. The paper shows the correlation of DMP with field measurements of herbaceous biomass, and discusses the differences among the different sites where ground data were collected. The analysis of other environmental variables (land cover, rainfall), which can be influential on rangeland biomass production, is presented in order to better explain the variance of field measurements among the different years.
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Francesco Nutini, Daniela Stroppiana, Mirco Boschetti, Pietro A. Brivio, Etienne Bartholome, and Gora Beye "Evaluation of remotely sensed DMP product using multi-year field measurements of biomass in West Africa", Proc. SPIE 8174, Remote Sensing for Agriculture, Ecosystems, and Hydrology XIII, 81740V (7 October 2011); doi: 10.1117/12.898906; https://doi.org/10.1117/12.898906
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