Correlazioni tra flora e ambiente in alcune abetine di Vallombrosa

摘要: Abstract Relationship between floristic types and environment in some silver fir stands at Vallombrosa. – This research, carried out by means of a biocenotical method on pure even-aged (Abies alba Mill.), leads to recognition 7 types. To show their significance herbaceous species are grouped according tolerance shade conditions. The relation age density is discussed. For more correct use the it necessary ascertain precisely, least for species, influence conditions topographical distribution. Natural regeneration occurs only where also less shade-tolerant present; exclusive presence sciophytes indicates that natural cannot establish.