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Canopy Height Mapping for Plantations in Nigeria Using GEDI, Landsat, and Sentinel-2

Domaine:

geospatialagriculture

Type de record:

paper
Créateur:
AngIkeAyoUzo
Éditeur:
MDP
Hôte:
Canopy height data from the Global Ecosystem Dynamics Investigation (GEDI) mission has powered the development of global forest height products, but these data and products have not been validated in non-forest tree plantation settings. In this study, we collected field observations of the canopy heights throughout oil palm plantations in Nigeria and evaluated the performance of existing global canopy height map (CHM) products as well as a local model trained on the GEDI and various Landsat and Sentinel-2 feature combinations. We found that existing CHMs fared poorly in the region, with mean absolute errors (MAE) of 4.2–6.2 m. However, the locally trained models performed well (MAE = 2.5 m), indicating that using the GEDI and optical satellite data can still be effective, even in a region with relatively sparse GEDI coverage. In addition to improved overall performance, the local model was especially effective at reducing errors for short (<5 m) trees, where the global products struggle to capture the canopy height.

Visit

doi.org

Licenses

https://creativecommons.org/licenses/by/4.0/

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