Ecological regions or ecoregions derive from ecological classification of land and represent broad and discrete ecologically homogeneous areas within which natural communities and species interact with the physical elements of the environment. The aim of this paper is to define the ecoregions of Italy, southern Europe, based on a robust methodological process for classification and mapping. The ecoregions of Italy comprise 2 Divisions, 7 Provinces, 11 Sections and 33 Subsections and constitute the first comprehensive ecological classification of the country that integrates accurate and updated cartographies and knowledges on climate, vegetation, land units and biogeography. This classification has the strength to be adopted as a proper framework for ecological modelling, biodiversity conservation policies and sustainable territorial planning at the national and subnational level. © 2014, © 2014 The Author(s). Published by Taylor & Francis

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In this paper we present the land units map of Italy, covering an area of ca. 300,000km(2) between 47 degrees 05 N-35 degrees 29 N and 6 degrees 37 E-18 degrees 31 E. The map was created by means of a Geographic Information System (GIS) and is based on the overlay of various thematic maps according to a hierarchical classification. The map scale is 1:250,000, with a minimum mapping unit of 50ha. The GIS integration of different layers, covering the main environmental components (climate, lithology and geomorphology), resulted in a number of hierarchically arranged land units, homogeneous in terms of biotic potential and ecological processes. These units highlight the role of physical determinism in characterizing the Italian territory with a high degree of environmental heterogeneity. The proposed land classification scheme could be taken into consideration when planning initiatives aimed at surveying, monitoring, managing and sustainably developing the territory