Implementation and validation of large wood analysis for wood budgeting in a semi-alluvial river
| Autor: | Boivin, Maxime, Buffin-Bélanger, Thomas, Piégay, Hervé |
|---|---|
| Přispěvatelé: | Environnement Ville Société (EVS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-École nationale supérieure d'architecture de Lyon (ENSAL)-École des Mines de Saint-Étienne (Mines Saint-Étienne MSE), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-École Nationale des Travaux Publics de l'État (ENTPE)-Université Jean Monnet [Saint-Étienne] (UJM)-Université Jean Moulin - Lyon 3 (UJML), Université de Lyon-Université Lumière - Lyon 2 (UL2)-École normale supérieure - Lyon (ENS Lyon), Université du Québec à Rimouski (UQAR), Boivin, Maxime, 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) |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
watershed scale
[SHS.GEO] Humanities and Social Sciences/Geography wood transport and mobility [SDE.ES] Environmental Sciences/Environmental and Society [SHS.GEO]Humanities and Social Sciences/Geography large wood jam [SDE.ES]Environmental Sciences/Environmental and Society wood budget large wood in river |
| Zdroj: | WWR3 proceedings 3rd International Conference Wood in World Rivers (WWR3) 3rd International Conference Wood in World Rivers (WWR3), Jul 2015, Padoue, Italy |
| Popis: | International audience; The semi-alluvial rivers of the Gaspé Peninsula, Québec (Canada), recruit and transport vast quantities of large wood. The rapid rate of channel shifting due to high-energy flows and non-cohesive banks allows the recruitment of large quantities of wood that in turn greatly influence river dynamics. The delta of the Saint-Jean River has accumulated a flux of wood since 1960, creating frequent avulsions, and now has a wood raft of more than 3 km in length. The Raft of the Saint-Jean River on the Gaspé Peninsula, Québec, Canada is an exceptional amount of wood that is unusual but natural. The river has complex large-wood dynamics that promote the formation of large wood jams in the river delta. The jam configuration allows a unique opportunity to apply a wood budget at the scale of a long river corridor and to better understand dynamics of large wood in river. A wood budget includes the evaluation of wood volumes (i) produced by bank erosion (input), (ii) still in transit in the river corridor (deposited on bars or channel edges), and (iii) accumulated in the delta (output). The budget is based on an analysis of aerial photos dating back to 1963 as well as surveys carried out between 2010 and 2014, all of which were used to locate and describe large wood accumulations along a 60 km river section. Understanding the interannual large wood dynamics in the Saint-Jean River can assist river managers determine sustainable solutions for the issue of wood rafts. |
| Databáze: | OpenAIRE |
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