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Fitosociologia numero 41 (1) S1

pag. 117-123: Linee guida per una banca dati delle aree sensibili: il ruolo dell’analisi fitosociologica

M. Pellizzari1, G. Sala2, A. Ferioli2

1Università di Ferrara, Dip. delle Risorse Naturali e Culturali, Corso Porta Mare 2, I - 44100 Ferrara; e-mail: pcf@unife.it

2ARPA Ferrara, Corso della Giovecca 169, I - 44100 Ferrara

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abstract

The role of phytosociology for a database of the “sensitive areas”. The project of a Sensitive Areas Database (BDAS) aims to collect information of environmental care about: status of sites, current dynamic trends, levels of actual and future impacts, effects of environmental policies. One may consider as “sensitive areas” the territorial bounds with both high environmental value and adverse factors threatening the environment. The geographical spotting of sensitive areas requires the selection of OGU - Operational Geographical Units, to overcome the bonds of administratìve boundaries.
Among the environmental data the knowledge of the status of vegetatìon becomes the main priority, concentrating on the plant communities. To test the database we chose as a specimen the coastal area of the Provinces of Ferrara and Ravenna, where they coexist within the same OGU high environmental value (the Po Delta Park) and strong pressure (the System coupling port and chemical industries near Ravenna).
The vegetational data provide a list of habitats as vegetation units. A “care index” was applied to each habitat, to implement quantitative and qualitative data sets; among the parameters chosen we enclosed evaluations about effective rarity, structure, anthropic interference and so on. The testing of the care index provides a specimen to apply the guide lines to other sensitive areas of Italy, so that BDAS will become complete by those requirements and will be available for environmental planning and management.

keywords

sensitive areas, Po Delta, vegetation, rarity index