Monitoring and Mapping Urban Sprawl Over Heritage Hotspots Using Copernicus Land Monitoring Services: The case of periurban large-scale, wind-powered water extraction mills in Palma (Mallorca)

Among the varied group of human constructions of heritage interest are the old wind-powered water extraction mills that sometimes form large-scale sets in rural areas with high wind potential. On the Mediterranean island of Mallorca (Spain), up to 2,400 windmills dating from the 19th and early 20th centuries have been counted. The areas in which they are located are considered heritage ‘hotspots’, i.e., areas prone to specific problems, such as the progressive abandonment of ethnological heritage resulting from urban sprawl over areas with an agricultural orientation. This article aims to monitor urban sprawl in the municipality of Palma, to quantify and map its impact on a set of windmills located mainly in the plain of Sant Jordi, to the east of the city. The study has been carried out using methodologies and analysis techniques from the Copernicus Land Monitoring Service’s Urban Atlas and Imperviousness Density products. The study shows that areas with agricultural land uses have been progressively transformed into urbanised ones. This transformation has impacted, above all, windmills located in peri-urban areas adjacent to the city. The analysis aims to show the analytical possibilities of Copernicus services and products, and their applicability in the planning and management of peri-urban agro-industrial heritage.