The Geoecological Evaluation of the Heritage Interest of Polygonal Soils Inherited in Alpine Mountains. The Example of the Col du Noyer (Massif du Dévoluy, Hautes Alpes, France)

L'évaluation géoécologique de l'intérêt patrimonial des sols polygonaux hérités en montagne alpine. L'exemple du Col du Noyer (Massif du Dévoluy, Hautes Alpes, France)

Pierre Pech (), Mahé Ajinca, Sylvain Abdulhak, Eric Hustache, Laurent Simon and Brigitte Talon ()
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Pierre Pech: LADYSS - Laboratoire Dynamiques Sociales et Recomposition des Espaces - UP1 - Université Paris 1 Panthéon-Sorbonne - UP8 - Université Paris 8 Vincennes-Saint-Denis - UPN - Université Paris Nanterre - CNRS - Centre National de la Recherche Scientifique - UPCité - Université Paris Cité, UP1 - Université Paris 1 Panthéon-Sorbonne
Mahé Ajinca: LADYSS - Laboratoire Dynamiques Sociales et Recomposition des Espaces - UP1 - Université Paris 1 Panthéon-Sorbonne - UP8 - Université Paris 8 Vincennes-Saint-Denis - UPN - Université Paris Nanterre - CNRS - Centre National de la Recherche Scientifique - UPCité - Université Paris Cité, UP1 - Université Paris 1 Panthéon-Sorbonne
Sylvain Abdulhak: CBNA - Conservatoire Botanique National Alpin
Eric Hustache: SMIGIBA - Syndicat Mixte de Gestion Intercommunautaire du Buech et de ses Affluents
Laurent Simon: LADYSS - Laboratoire Dynamiques Sociales et Recomposition des Espaces - UP1 - Université Paris 1 Panthéon-Sorbonne - UP8 - Université Paris 8 Vincennes-Saint-Denis - UPN - Université Paris Nanterre - CNRS - Centre National de la Recherche Scientifique - UPCité - Université Paris Cité, UP1 - Université Paris 1 Panthéon-Sorbonne
Brigitte Talon: AU - Avignon Université, IRD - Institut de Recherche pour le Développement

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Abstract: At an altitude of 1664 m, the Col du Noyer in the French Dévoluy Mountains, which is accessible in summer by road, is one of the most popular Alpine passes. It was located in an unglaciated area during the last Quaternary ice age and suffered the effects of the severe frost. Polygonal grounds formations have recently been discovered. Our study presents the results of the identification and characterisation of these formations as well as the floristic assemblages that currently occupy them. The analyses, carried out by a multidisciplinary team, consist of photo-interpretation, geomorphological, sedimentological and pedoanthracological studies. They confirm the presence of these inherited polygonal grounds. Floristic surveys reveal that these inherited periglacial formations constitute original habitats, favouring a strong local heterogeneity. The whole constitutes a natural complex requiring protection. Enhancing the heritage value of this site would constitute a means of protecting this complex, which is a rare geomorphological landscape in the Alps: educational both in terms of its understanding and its paleoenvironmental interpretation.

Keywords: Polygonal grounds; geoecological assessment; nature protection; heritage enhancement; protection de la nature; Sols polygonaux; évaluation géoécologique; valorisation patrimoniale (search for similar items in EconPapers)
Date: 2021-06-15
New Economics Papers: this item is included in nep-cul
Note: View the original document on HAL open archive server: https://hal.science/hal-03271455v1
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Published in Revue de Géographie Alpine / Journal of Alpine Research, 2021, La montagne et la gestion collective des biens : quelles influences ? quelles interactions ?, 109-1

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