Boschi di forra, faggete e abieteti in Friuli

Abstract

GORGE-, BEECH- AND FIR-WOODS IN FRIULI (NE ITALY). Syntaxonomy of beechwoods, gorge woods and fir-woods in Friuli is given. Geographic position of the region is enhanced by the heterogeneity syntaxonomy of the forest units. In effect, the coenosis considered are shared between the two orders Fagetalia, sylvaticae Pawlowski 28 and Quercetalia robori R. Tx. 31. The former order presents the illyric alliance Aremonio-Fagion (Ht. .18) Török et al. 89, on calcareous and very basic substrates, and the Centroeuropean alliance Lathyro-Fagion Mayer 74 ad interim on neutrophylous and weekly acid substrates. On acid substrates the beech-woods are included into the order Quercetalia robori represented through the alliance Luzulo-Fagion Lohm. & R.Tx. in R. Tx. 54. The gorge woods are attributed to the suballiance Lamio-Acerenion Marincek 90 (Tilio-Acerion Klika 55) and the fir-woods to the alliance Abieti-Piceion (Br.-BI. in Br.-Bl. et al. 39) So6 64 (Fagetalia).