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Studying the influence of livestock pressure on gully erosion in rangelands of SW Spain by means of the UAV+SfM workflow

2018; Asociación Española de Geografía; Issue: 78 Linguagem: Inglês

10.21138/bage.2712

2605-3322

Álvaro Gómez‐Gutiérrez, Susanne Schnabel, Joaquín Francisco Lavado Contador, José Juan de Sanjosé Blasco, Alan Atkinson, Manuel Pulido Fernández, Manuel Sánchez-Fernández,

Aeolian processes and effects

Gully erosion in agrosilvopastoral systems of SW Spain represents a common degradation process, but has been hardly analysed. The suitability of using the Unmanned Aerial Vehicles (UAV) and Structure from Motion photogrammetry (SfM) workflow to map small valley-bottom gullies in these landscapes was tested. The results showed centimetre-level accuracy. Observed strengths and limitations of the UAV+SfM workflow in the study areas are discussed. The resulting cartography allowed mapping soil erosion forms at outstanding spatial scales. All study areas showed evidences of degradation.