Geobotanical analysis of the flora of Tuscan chestnut woods. -The vascular flora of tuscan chestnut woods was studied by means of floristic and vegetation literature information and data derived by 247 new releves. Species were classified by their frequency in the different types of chestnut woods; the ecological requirements for every plant were evaluated and specified, with regards to light, soil reaction, water, soil nutrients and temperature (numerical indicator values from 1 to 5 were used for each ecological need). These analyses led us to determine the principal core of the natural chestnut wood flora. The analyses were carried out for the entire flora but especially for specific flora of different types (chestnuts coppices, forests, cultivations for fruit and the more important wide-spread species). The life and growth forms spectra were calculated. The analysis of ecological groups showed that all the principal species are included in nemoral acidophilous and neutrophilous components. From the standpoint of soil nutrients, this study highlighted that not only the flora of cultivated chestnut woods, but also the flora of coppices and in particular all the principal wide-spread species have to be considered oligotrophic. The analysis of chorological units showed that the most important group is the Mediterraneo-European one, in which the Orometiderraneo-European species have particular relevance. The flora of tuscan chestnut woods had a few species of the Eastern chorological units, but was highly connected with the flora of West Mediterranean and Atlantic territories. An hypothesis about the genesis of the flora was formulated in relation to the species belonging to different vegetation belts (method of ScHMID, 1963). Finally, some considerations about dynamism and conservation aspects were made.

Analisi geobotanica della flora dei castagneti della Toscana / D. VICIANI. - In: WEBBIA. - ISSN 0083-7792. - STAMPA. - 56 (1):(2001), pp. 1-68. [10.1080/00837792.2001.10670704]

Analisi geobotanica della flora dei castagneti della Toscana

VICIANI, DANIELE
2001

Abstract

Geobotanical analysis of the flora of Tuscan chestnut woods. -The vascular flora of tuscan chestnut woods was studied by means of floristic and vegetation literature information and data derived by 247 new releves. Species were classified by their frequency in the different types of chestnut woods; the ecological requirements for every plant were evaluated and specified, with regards to light, soil reaction, water, soil nutrients and temperature (numerical indicator values from 1 to 5 were used for each ecological need). These analyses led us to determine the principal core of the natural chestnut wood flora. The analyses were carried out for the entire flora but especially for specific flora of different types (chestnuts coppices, forests, cultivations for fruit and the more important wide-spread species). The life and growth forms spectra were calculated. The analysis of ecological groups showed that all the principal species are included in nemoral acidophilous and neutrophilous components. From the standpoint of soil nutrients, this study highlighted that not only the flora of cultivated chestnut woods, but also the flora of coppices and in particular all the principal wide-spread species have to be considered oligotrophic. The analysis of chorological units showed that the most important group is the Mediterraneo-European one, in which the Orometiderraneo-European species have particular relevance. The flora of tuscan chestnut woods had a few species of the Eastern chorological units, but was highly connected with the flora of West Mediterranean and Atlantic territories. An hypothesis about the genesis of the flora was formulated in relation to the species belonging to different vegetation belts (method of ScHMID, 1963). Finally, some considerations about dynamism and conservation aspects were made.
2001
56 (1)
1
68
D. VICIANI
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/257023
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