Biodiversità nella dendroflora italiana

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Abstract

[automatically translated] In the vascular flora native of Italy, consisting of approximately 7000 specific and infraspecific taxa, arboreal ones are represented by a small number of units. Among gymnosperms and angiosperms do not exceed 200 species. Diversify and enrich the Italian dendroflora wood species policormiche or shrubs that, with age and under specific conditions, can rise to real trees. They also contribute genetic expressions of classic tree species variously interpreted in taxonomic level. The dendroflora examined here refers to 53 kinds (7 gimonosperme and 46 angiosperms). The specific and infraspecific taxa are 188 (21 167 gymnosperms and angiosperms). Many genres have a high diversity (Pinus, Quercus, Salix, Pyrus, Tamarix). The Rosaceae family is the richest in genera with Crataegus, Malus, Mespilus, Pyrus, Prunus and Sorbus. In the beech family, expressed by the genera Castanea, Fagus and Quercus, the first two are monospecific while Quercus expresses greater taxonomic diversity of dendroflora referring to the same genus. The Salicaceae family is expressed by only one genus Salix nominal and in this, therefore, focuses all its taxonomic diversity, virtually quantitatively significant as in Quercus. From the point of view chorological, the Italian dendroflora mainly presents characters Europeans and subject the Mediterranean; the endemism has a considerable impact and is prominently represented by subspecifications units; There is no lack, however, cases of good species as in Abies, Betula, Malus and Pyrus the first two are monospecific while Quercus expresses greater taxonomic diversity of dendroflora referring to the same genus. The Salicaceae family is expressed by only one genus Salix nominal and in this, therefore, focuses all its taxonomic diversity, virtually quantitatively significant as in Quercus. From the point of view chorological, the Italian dendroflora mainly presents characters Europeans and subject the Mediterranean; the endemism has a considerable impact and is prominently represented by subspecifications units; There is no lack, however, cases of good species as in Abies, Betula, Malus and Pyrus the first two are monospecific while Quercus expresses greater taxonomic diversity of dendroflora referring to the same genus. The Salicaceae family is expressed by only one genus Salix nominal and in this, therefore, focuses all its taxonomic diversity, virtually quantitatively significant as in Quercus. From the point of view chorological, the Italian dendroflora mainly presents characters Europeans and subject the Mediterranean; the endemism has a considerable impact and is prominently represented by subspecifications units; There is no lack, however, cases of good species as in Abies, Betula, Malus and Pyrus It concentrates all its taxonomic diversity, virtually quantitatively significant as in Quercus. From the point of view chorological, the Italian dendroflora mainly presents characters Europeans and subject the Mediterranean; the endemism has a considerable impact and is prominently represented by subspecifications units; There is no lack, however, cases of good species as in Abies, Betula, Malus and Pyrus It concentrates all its taxonomic diversity, virtually quantitatively significant as in Quercus. From the point of view chorological, the Italian dendroflora mainly presents characters Europeans and subject the Mediterranean; the endemism has a considerable impact and is prominently represented by subspecifications units; There is no lack, however, cases of good species as in Abies, Betula, Malus
Original languageItalian
Pages (from-to)233-257
Number of pages25
JournalL' ITALIA FORESTALE E MONTANA
Volume68
Publication statusPublished - 2013

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