Study of degraded areas throughimages obtained froma UAV (drone) and the ESA Sentinel satellite
Abstract
The aim of this paper is to analyse by satellite images, aerial photographs and images taken with a UAV (drone), a protected sector within the Guadarrama Regional Park (Madrid) affected by important degradation processes. This area is characterized by the presence of significant gullies that, although lacking vegetation for the most part, in some more stable points, support a dense Mediterranean forest. Human action has caused an important sealing of the soil with sitting residential areas nearby that increases the processes of runoff and, therefore, affects the evolution of the gullies. The objective of this paper is to make a detailed cartography of these degraded areas using available and updated sources: aerial photography, images of the Landsat, Spot and Sentinel satellites and images taken with a UAV with visible camera and near infrared. They are absolute novelty, the images taken by the Sentinel satellite and the UAV.
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