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Le concept de forêt ancienne s’applique-t-il aux peupleraies cultivées ? Test de pertinence avec la flore des vallées de Champagne

Abstract : This study aims to establish whether the concept of “ancient forest” can be applied to the case of poplar plantations. To answer this question, we used 107 phytoecological survey points in poplar plantations and subnatural forests located in the large valleys of the Champagne area. In addition, we examined: — the plots’ past land uses, from Ordnance Survey maps from 1830-40 (1/40 000 scale) and several aerial photographs from 1950 to now, — ancient forest plants listed by Hermy et al. (1999) and Dupouey et al. (2002). Conventional poplar plantations, both historically forested and not, cannot be distinguished on the basis of their wealth of ancient forest species, whereas ancient subnatural forests host significantly more ancient forest plants than recent subnatural forests. Hence, poplar plantations cannot be investigated in the same way as ancient forests. From a more general point of view, these results lead us to think that reforestation projects implying heavy soil disturbances can alter the ancient forest status to various degrees. Thus, beyond the particular case of poplar plantations, we need to study the impact of reforestation practices on the ancient forest flora. In the meantime, we suggest that reforestation of ancient subnatural forests with plantations should be avoided, or at least, be performed using the least invasive methods for forest ecosystem
Mots-clés : CHAMPAGNE USAGE DU SOL
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Submitted on : Wednesday, November 24, 2021 - 5:32:44 PM
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Richard Chevalier, Frédéric Archaux, A. Berthelot, L. Carnnot Milard, Marianne Duprez, et al.. Le concept de forêt ancienne s’applique-t-il aux peupleraies cultivées ? Test de pertinence avec la flore des vallées de Champagne. Revue forestière française, AgroParisTech, 2013, LXV (4), pp.375-388. ⟨10.4267/2042/53632⟩. ⟨hal-02599845⟩

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