A Classification Procedure for Mapping Topo-climatic Conditions for Strategic Vegetation Planning |
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Authors: | Josep Maria Serra Jordi Cristobal Miquel Ninyerola |
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Institution: | 1.Department of Animal Biology, Plant Biology and Ecology,Universitat Autònoma de Barcelona,Barcelona,Spain;2.Department of Geography,Universitat Autònoma de Barcelona,Barcelona,Spain |
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Abstract: | Environmental classification addresses issues involving the representation and analysis of continuous and variable ecological
data. This study creates a methodology to define topo-climatic landscapes (TCL) in the north-west of Catalonia, which is situated
in the north-east of the Iberian Peninsula. TCL provide data regarding the ecological behavior of a landscape in terms of
its topography, physiognomy, and climate, which are the main drivers of an ecosystem. The variables selected are derived from
a variety of different sources, such as remote sensing and climatic atlases. The methodology employed combines unsupervised
iterative cluster classification with supervised fuzzy classification. Twenty eight TCL, which can be differentiated in terms
of their vegetation physiognomy and vegetation altitudinal range type, were selected for the study area. Furthermore, a hierarchy
among the TCL is established which permits the merging of clusters and allows for changes in thematic resolution. By using
the topo-climatic landscape map, managers can identify patches with similar environmental conditions and at the same time
assess the uncertainty involved in classification. |
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