c3.11.3 – From past to future: long-term investigations in a strict forest reserve in the Eastern Italian Alps using dendroecology and a Geographic Information System.

Motta R (1), Nola P (2), Piussi P (3)

(1) Dep. AgroSelviTer, University of Turin, Grugliasco TO, (2) Dep. ECOTER, University of Pavia, Italy, (3) Dep. DISTAF, University of Florence, Italy
Collocazione: c3.11.3 – Tipo Comunicazione: Poster
3° Congresso SISEF *
Sessione 11: “Selvicoltura” *

Contatto: Renzo Motta (rmotta.selv@iol.it)

Abstract: In 1995-96 two permanent long-term monitoring plots, measuring one hectare each, were established in sub-alpine multi-layered forest stands in the Paneveggio forest (TN, Italy). The main purpose of this study was to provide information about the origin, spatio-temporal development and disturbance history of these stands. The study was carried out using biological data-bases (tree rings) and various types of written evidence. All of the data collected were transferred onto a G.I.S. (Arcview 3.1) to obtain the spatial dimensions of the phenomena observed. In the Valbona 3 stand age structure analysis revealed an uneven-aged population in which the oldest trees were more than 400 years old. The regeneration establishment during the last three centuries was quite continuous, in time and in space; the stand has been affected quite regularly by disturbances all over the last three centuries; this fact, coupled together with the age structure and the information gleaned from historical documents, supports the hypothesis that in this area a Plenterwald system was carried out over the last centuries. The Buse dell’oro stand when analyzed for age structure also showed an uneven-aged population with oldest trees more than 400 years old. However, differently from that which took place in the Valbona 3 stand, massive regeneration in this area occurred only following the disturbance recorded in 1920-1929. It is therefore plausible to theorize that the area was utilized as pasture up to the end of the 19th century. The two plots, though sharing a relatively similar present structure, actually developed in entirely different ways. This study has confirmed that biological data-bases can be used to identify localization occurrence and the intensity of previous disturbance in forest stands, though the causes of the disturbance in cultivated forests can be determined only by means of the study of and comparison between biological data-bases and historical records.

Citazione: Motta R , Nola P , Piussi P (2001). From past to future: long-term investigations in a strict forest reserve in the Eastern Italian Alps using dendroecology and a Geographic Information System. . 3° Congresso Nazionale SISEF, Viterbo, 15 – 18 Ott 2001, Contributo no. #c3.11.3