Geomorphological system and landscape coevolution in Mercurey (Burgundy, France): hypothesis of an early soil maintenance strategy
| Autor: | Aurélien Christol, Mathieu Fressard, Etienne Cossart, Brian Chaize |
|---|---|
| Přispěvatelé: | Environnement, Ville, Société (EVS), École normale supérieure de Lyon (ENS de Lyon)-École des Mines de Saint-Étienne (Mines Saint-Étienne MSE), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université Lumière - Lyon 2 (UL2)-Université Jean Moulin - Lyon 3 (UJML), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet - Saint-Étienne (UJM)-École Nationale des Travaux Publics de l'État (ENTPE)-École nationale supérieure d'architecture de Lyon (ENSAL)-Centre National de la Recherche Scientifique (CNRS), SGF, CNRS, Laboratoire de Géologie de Lyon ou l’étude de la Terre, des planètes et de l’environnement, Sciencesconf.org, CCSD |
| Rok vydání: | 2021 |
| Předmět: |
010506 paleontology
Pleistocene 0507 social and economic geography Solifluction 01 natural sciences [SDU] Sciences of the Universe [physics] géomorphologie Bourgogne paysage charbon ComputingMilieux_MISCELLANEOUS Holocene 0105 earth and related environmental sciences Earth-Surface Processes Terroir 2. Zero hunger Land use 05 social sciences Sediment 15. Life on land Sedimentation [SDU]Sciences of the Universe [physics] Sedimentary rock Physical geography 050703 geography Holocène Geology |
| Zdroj: | 27e édition de la Réunion des Sciences de la Terre 27e édition de la Réunion des Sciences de la Terre, SGF, CNRS, Laboratoire de Géologie de Lyon ou l’étude de la Terre, des planètes et de l’environnement, Nov 2021, Lyon, France |
| ISSN: | 1957-777X 1266-5304 |
| Popis: | Vine introduction in Burgundy (east central France) two millennia ago is responsible for land use changes and increased soil erosion to which societies have tried to adapt. In this paper we seek to figure out the relationship between land uses, agricultural practices and geomorphic dynamics in the Mercurey terroir during the Late Holocene. The method employed is based on the analysis of sedimentary deposits observed in the valley bottom and along hillslopes. It is complemented by a pedoanthracological study derived from a trench excavated into a riverbank, in order to interpret the variability of the reconstituted sedimentary signal. Our results highlight two major stages of detritism over the last 2,800 years. At least from 800 cal. BC, frost heave screes (stored since the Late Pleistocene) are transported from the upper part of hillslopes to the valley bottom by high-energy geomorphic processes (e.g., solifluction flows). This sequence of coarse colluviums is associated with the development of an agro-pastoral landscape marked by an opening forest cover. A second phase begins after 1400 cal. AD. It is characterized by a fine sedimentation and a high concentration of vine charcoal. Indeed, wine-growing spread in the medieval landscape comes with the building of agricultural infrastructures. It leads to a decrease of sediment connections from the source areas to valley bottom. The coarser sediments are retained on the hillslopes, thus bringing out soil maintenance strategy. |
| Databáze: | OpenAIRE |
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