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Abstract
The results of a bio-climatic study regarding the Sicilian territory is given. On the basis of thermometric and pluviometric data, some indexes proposed by Rivas-Martinez have been produced for 61 localities of the island. In particular, the indexes utilized for the bio-climatic classification are the following: It (index of thermicity), Iov (ombro-thermic index) and Iovc (compensated ombro-thermic index). Besides, for the individuation and delimitation of the bio-climatic belts and relative thermo-types and ombro-types other data, as average annual temperatures, average annual precipitation, geomorphology and relative climax vegetation, have been considered. On the whole, the bio-climatic belts occurring in Sicily are: inframediterranean, thermomediterranean, mesomediterranean, supramediterranean, oromediterranean and crioromediterranean. The correlations between the vegetation and bio-climate are examined too.
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