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Original Articles

Dynamique biogéographique des boisements forestiers en Languedoc durant le Moyen Age: l'impact de l'an mil

Pages 627-636 | Published online: 10 Jul 2014
 

Résumé

Grâce à la confrontation de trois types de sources, les documents textuels, la microtoponymie et l'anthracologie, la persistance, jusque vers l'an mil, de taxons mésophiles à basse altitude dans tout le pourtour méditerrannéen du Massif Central a été démontrée. Ces espèces montagnardes ou médioeuropéennes sont principalement le Hêtre, le Sapin et le Noisetier. Elles survivent en conditions édaphiques privilégiées le long des rivières et au bord des lagunes littorales. C'est la grande fièvre défricheuse du Xlème siècle qui les éradique définitivement: à partir de 1040–1060, la multiplication des condamines témoigne que les sols lourds d'alluvions sont désormais intégrés à l'agrosystème. Ainsi, à l'actif des paysans du Xlème siècle, on doit porter la fixation actuelle de l'étagement de la végétation.

Summary

The persistence of mesophilic taxa at low altitude until the year one thousand in Languedoc was established by comparing three kinds of sources: written documents, microtoponymy and charcoal analysis. They were localized everywhere around the whole mediterranean area of the Central massif. Mountain species from middle Europe were present: mainly beech, fir and hazel tree. They survive in privilegied edaphic conditions along riversides or at the coastal pondsides. The great clearing of the XI century definitively eliminated these species. From 1040–1060, the increase of “Condamines” testifies that the heavy soils with alluvial deposits were integrated into the farming system. Therefore, the action of peasants during the XI century laid down the present level of vegetation.

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