| Titre | Cartographie des fonctions de protection de la forêt de montagne : appréciation des potentialités d'avalanche sous couvert forestier / Mapping the protective roles of mountain forests : assessing avalanche potentials in forested areas | |
|---|---|---|
| Auteur | Christophe Chauvin, Frédéric Berger | |
 |
Revue |
Géocarrefour Titre à cette date : Revue de géographie de Lyon |
| Numéro | volume 71, no 2, 1996 Système d'information géographique et gestion de l'environnement | |
| Page | 137-145 | |
| Résumé anglais |
The erosion protection division of Cemagref at Grenoble has perfected a method of ranking forests in terms of their role as a protection from avalanches. This is based on risk analysis carried out by the R.T.M. services of the O.N.F. This method takes into account the importance of natural hazards (avalanches, rock falls, etc.), the structure and dendrometric parameters of the forest cover and the vulnerability of the threatened sites. It also provides the criteria by which to determine those afforested areas from which avalanches are likely to start. A statistical model to calculate the stopping distance, developed by the Norvegians and adapted to French topographical conditions by Cemagref at Grenoble, is used to determine the probable stopping zones of these phenomena. All these criteria have enabled the completion of a Map of the Probable Location of Avalanches, based exclusively on observed events. The comparison of such information with forest data shows that forest maintain these phenomena at a level of potential activity. However, understanding of the control of this hazard by the forest requires a better comprehension of the interactions between forests and snow, and forest and the snow mantle. To do this, an experimental study plan of snow in forests has been made. Source : Éditeur (via Persée) |
|
| Article en ligne | http://www.persee.fr/web/revues/home/prescript/article/geoca_0035-113x_1996_num_71_2_4337 |
