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Combining classification techniques to define topo-climatic landscapes
Combinació de tècniques de classificació per la cartografia de paisatges topo-climàtics: estudi de la regió Lleida-Pirineus (NE Península Ibèrica);
Combining classification techniques to map topo-climatic landscapes: a case study of Lleida-Pyrenees region (NE Iberian Peninsula)
Serra Díaz, Josep M.
Institut de Ciència i Tecnologia Ambientals; Universitat Autònoma de Barcelona; Ninyerola i Casals, Miquel
Landscape classification tackles issues related to the representation and analysis of continuous and variable ecological data. In this study, a methodology is created in order to define topo-climatic landscapes (TCL) in the north-west of Catalonia (north-east of the Iberian Peninsula). TCLs relate the ecological behaviour of a landscape in terms of topography, physiognomy and climate, which compound the main drivers of an ecosystem. Selected variables are derived from different sources such as remote sensing and climatic atlas. The proposed methodology combines unsupervised interative cluster classification with a supervised fuzzy classification. As a result, 28 TCLs have been found for the study area which may be differentiated in terms of vegetation physiognomy and vegetation altitudinal range type. Furthermore a hierarchy among TCLs is set, enabling the merging of clusters and allowing for changes of scale. Through the topo-climatic landscape map, managers may identify patches with similar environmental conditions and asses at the same time the uncertainty involved.
574 - Ecologia general i biodiversitat
Paisatge -- Classificació
Paisatge -- Ecologia
Cartografia -- Processament de dades
Conglomerats (Matemàtica), Anàlisi de
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