Abstract
A multivariate clustering approach combined with geomatics was applied to delineate and define homogeneous zones (terroir units), within the premium Denomination of Guaranteed Origin (DOCG) Colline Teramane wine-growing area, in the Teramo Province (Italy). A geographical information system (GIS) architecture was set up to incorporate the main factors affecting the geographical differentiation of land capability. Vine-related environmental indices and parameters were interpolated and incorporated in the GIS. A principal component analysis followed by a multivariate clustering algorithm was applied to obtain a continuous topography-climate map, in which each cluster represented an homogeneous zone or terroir unit. Further characterization of the terroir units was then obtained by overlaying the topography-climate map with land use information and a geologic map of the same area. This territory classification provides a useful framework for further hypotheses testing, in particular vine interaction with environment or new cultivars suitability. Moreover, the approach represents a potential tool for rational territory management and land use planning.