In this work, are presented the results of charcoals analysis of 10 necropolis from N-E Italy. The site's ages are from IXth century B.C. to IInd century A.D. The analytical methodology has been differentiated on the evidence of three different ways of accumulation of charcoals due to different cremation rites. Palaeoecological reconstruction, using samples from necropolis, must be carefully checked because the Interpretation of results couldn't be reliable owing to an intentional choose of species in different rites and/or a manipulation subsequent the cremation.