Yield mapping for different crops in Sudano-Sahelian smallholder farming systems : results based on metric Worldview and decametric SPOT-5 Take5 time series
(2016) ESA Living Planet Symposium — Location: Prague, Czech Republic (9.May.2016)
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- Abstract
- Efficient yield mapping in Sudano-Sahelian Africa, characterized by a very heterogeneous landscape, is crucial to help ensure food security and decrease smallholder farmers’ vulnerability. Thanks to an unprecedented in-situ data and HR and VHR remote sensing time series collected in the Koutiala district (in south-eastern Mali), the yield and some key factors of yield estimation were estimated. A crop-specific biomass map was derived with a mean absolute error of 20% using metric WorldView and 25% using decametric SPOT-5 TAKE5 image time series. The very high intra- and inter-field heterogeneity was captured efficiently. The presence of trees in the fields led to a general overestimation of yields, while the mixed pixels at the field borders introduced noise in the biomass predictions.
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Citations
Blaes, X., Lambert, M.-J., Chomé, G., Traoré, P. S., de By, R. A., & Defourny, P. (2016). Yield mapping for different crops in Sudano-Sahelian smallholder farming systems : results based on metric Worldview and decametric SPOT-5 Take5 time series. “Proceedings of Living Planet Symposium 2016”. ESA Living Planet Symposium, Prague, Czech Republic. https://hdl.handle.net/2078.5/183760