Linking Land Cover Changes in the Sub‐Alpine and Montane Belts to Changes in a Torrential River
Channel changes are the consequence of changes in sediment yield from the slopes and in the connectivity between slopes and channels because of distinct land use and climate impacts. In this study, we investigated the characteristics and evolution of a short reach in the headwater of the Ijuez River...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Nadal‐Romero, Estela [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2016 |
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| Rechteinformationen: |
Nutzungsrecht: Copyright © 2014 John Wiley & Sons, Ltd. |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Land degradation & development - Chichester, Sussex : Wiley, 1996, 27(2016), 2, Seite 179-189 |
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| Übergeordnetes Werk: |
volume:27 ; year:2016 ; number:2 ; pages:179-189 |
| Links: |
|---|
| DOI / URN: |
10.1002/ldr.2294 |
|---|
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| 520 | |a Channel changes are the consequence of changes in sediment yield from the slopes and in the connectivity between slopes and channels because of distinct land use and climate impacts. In this study, we investigated the characteristics and evolution of a short reach in the headwater of the Ijuez River, central–southern Pyrenees. Assessment of a series of sedimentary and geomorphic structures confirmed major changes to the valley bottom, mainly related to changes in the intensity of human activity. The oldest sedimentary structure is a terrace level located 3 to 4 m above the current alluvial plain. General deforestation, overgrazing and recurring fires in the montane belt (1100–1600 m a.s.l.) have led to increased soil erosion and connectivity, and to the triggering of debris flows that have been deposited on the fluvial terrace. Woody fragments from within the debris flows were dated using accelerator mass spectrometry 14 C radiocarbon techniques (AMS), yielding ages between 100 and 115 cal years bp , which coincides with the period of maximum deforestation and human density in the Pyrenees. Depopulation and farmland abandonment since the beginning of the 20th century has resulted in generalized natural and artificial reforestation, a shrinkage of the eroded areas and a decline in connectivity between slopes and the channel. The most important consequence has been channel incision and narrowing, and the development of a sediment armour layer. Active sediment transport is continuing, although there has been a decrease in sediment yield from the slopes. Copyright © 2014 John Wiley & Sons, Ltd. | ||
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| 700 | 1 | |a Sanjuán, Yasmina |4 oth | |
| 700 | 1 | |a Serrano‐Muela, María P |4 oth | |
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| 700 | 1 | |a González‐Sampériz, Penélope |4 oth | |
| 700 | 1 | |a Rubiales, Juan Manuel |4 oth | |
| 700 | 1 | |a García‐Ruiz, José M |4 oth | |
| 700 | 1 | |a Gómez‐Villar, Amelia |4 oth | |
| 700 | 1 | |a Arnáez, José |4 oth | |
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10.1002/ldr.2294 doi PQ20160307 (DE-627)OLC1972100688 (DE-599)GBVOLC1972100688 (PRQ)p894-c2eeedbeb8f801a8c9a5ac6e4d3c92b1fd57c40a46911c7804e7cf1903fd38d03 (KEY)0175141720160000027000200179linkinglandcoverchangesinthesubalpineandmontanebel DE-627 ger DE-627 rakwb eng 630 ZDB Nadal‐Romero, Estela verfasserin aut Linking Land Cover Changes in the Sub‐Alpine and Montane Belts to Changes in a Torrential River 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Channel changes are the consequence of changes in sediment yield from the slopes and in the connectivity between slopes and channels because of distinct land use and climate impacts. In this study, we investigated the characteristics and evolution of a short reach in the headwater of the Ijuez River, central–southern Pyrenees. Assessment of a series of sedimentary and geomorphic structures confirmed major changes to the valley bottom, mainly related to changes in the intensity of human activity. The oldest sedimentary structure is a terrace level located 3 to 4 m above the current alluvial plain. General deforestation, overgrazing and recurring fires in the montane belt (1100–1600 m a.s.l.) have led to increased soil erosion and connectivity, and to the triggering of debris flows that have been deposited on the fluvial terrace. Woody fragments from within the debris flows were dated using accelerator mass spectrometry 14 C radiocarbon techniques (AMS), yielding ages between 100 and 115 cal years bp , which coincides with the period of maximum deforestation and human density in the Pyrenees. Depopulation and farmland abandonment since the beginning of the 20th century has resulted in generalized natural and artificial reforestation, a shrinkage of the eroded areas and a decline in connectivity between slopes and the channel. The most important consequence has been channel incision and narrowing, and the development of a sediment armour layer. Active sediment transport is continuing, although there has been a decrease in sediment yield from the slopes. Copyright © 2014 John Wiley & Sons, Ltd. Nutzungsrecht: Copyright © 2014 John Wiley & Sons, Ltd. braided channel central Pyrenees reforestation land use changes debris flows deforestation channel incision Sanjuán, Yasmina oth Serrano‐Muela, María P oth Álvarez‐Martínez, Javier oth González‐Sampériz, Penélope oth Rubiales, Juan Manuel oth García‐Ruiz, José M oth Gómez‐Villar, Amelia oth Arnáez, José oth Enthalten in Land degradation & development Chichester, Sussex : Wiley, 1996 27(2016), 2, Seite 179-189 (DE-627)211582530 (DE-600)1319202-4 (DE-576)9211582539 1085-3278 nnns volume:27 year:2016 number:2 pages:179-189 http://dx.doi.org/10.1002/ldr.2294 Volltext http://onlinelibrary.wiley.com/doi/10.1002/ldr.2294/abstract http://search.proquest.com/docview/1764312130 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-ARC SSG-OLC-TEC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_4219 AR 27 2016 2 179-189 |
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10.1002/ldr.2294 doi PQ20160307 (DE-627)OLC1972100688 (DE-599)GBVOLC1972100688 (PRQ)p894-c2eeedbeb8f801a8c9a5ac6e4d3c92b1fd57c40a46911c7804e7cf1903fd38d03 (KEY)0175141720160000027000200179linkinglandcoverchangesinthesubalpineandmontanebel DE-627 ger DE-627 rakwb eng 630 ZDB Nadal‐Romero, Estela verfasserin aut Linking Land Cover Changes in the Sub‐Alpine and Montane Belts to Changes in a Torrential River 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Channel changes are the consequence of changes in sediment yield from the slopes and in the connectivity between slopes and channels because of distinct land use and climate impacts. In this study, we investigated the characteristics and evolution of a short reach in the headwater of the Ijuez River, central–southern Pyrenees. Assessment of a series of sedimentary and geomorphic structures confirmed major changes to the valley bottom, mainly related to changes in the intensity of human activity. The oldest sedimentary structure is a terrace level located 3 to 4 m above the current alluvial plain. General deforestation, overgrazing and recurring fires in the montane belt (1100–1600 m a.s.l.) have led to increased soil erosion and connectivity, and to the triggering of debris flows that have been deposited on the fluvial terrace. Woody fragments from within the debris flows were dated using accelerator mass spectrometry 14 C radiocarbon techniques (AMS), yielding ages between 100 and 115 cal years bp , which coincides with the period of maximum deforestation and human density in the Pyrenees. Depopulation and farmland abandonment since the beginning of the 20th century has resulted in generalized natural and artificial reforestation, a shrinkage of the eroded areas and a decline in connectivity between slopes and the channel. The most important consequence has been channel incision and narrowing, and the development of a sediment armour layer. Active sediment transport is continuing, although there has been a decrease in sediment yield from the slopes. Copyright © 2014 John Wiley & Sons, Ltd. Nutzungsrecht: Copyright © 2014 John Wiley & Sons, Ltd. braided channel central Pyrenees reforestation land use changes debris flows deforestation channel incision Sanjuán, Yasmina oth Serrano‐Muela, María P oth Álvarez‐Martínez, Javier oth González‐Sampériz, Penélope oth Rubiales, Juan Manuel oth García‐Ruiz, José M oth Gómez‐Villar, Amelia oth Arnáez, José oth Enthalten in Land degradation & development Chichester, Sussex : Wiley, 1996 27(2016), 2, Seite 179-189 (DE-627)211582530 (DE-600)1319202-4 (DE-576)9211582539 1085-3278 nnns volume:27 year:2016 number:2 pages:179-189 http://dx.doi.org/10.1002/ldr.2294 Volltext http://onlinelibrary.wiley.com/doi/10.1002/ldr.2294/abstract http://search.proquest.com/docview/1764312130 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-ARC SSG-OLC-TEC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_4219 AR 27 2016 2 179-189 |
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10.1002/ldr.2294 doi PQ20160307 (DE-627)OLC1972100688 (DE-599)GBVOLC1972100688 (PRQ)p894-c2eeedbeb8f801a8c9a5ac6e4d3c92b1fd57c40a46911c7804e7cf1903fd38d03 (KEY)0175141720160000027000200179linkinglandcoverchangesinthesubalpineandmontanebel DE-627 ger DE-627 rakwb eng 630 ZDB Nadal‐Romero, Estela verfasserin aut Linking Land Cover Changes in the Sub‐Alpine and Montane Belts to Changes in a Torrential River 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Channel changes are the consequence of changes in sediment yield from the slopes and in the connectivity between slopes and channels because of distinct land use and climate impacts. In this study, we investigated the characteristics and evolution of a short reach in the headwater of the Ijuez River, central–southern Pyrenees. Assessment of a series of sedimentary and geomorphic structures confirmed major changes to the valley bottom, mainly related to changes in the intensity of human activity. The oldest sedimentary structure is a terrace level located 3 to 4 m above the current alluvial plain. General deforestation, overgrazing and recurring fires in the montane belt (1100–1600 m a.s.l.) have led to increased soil erosion and connectivity, and to the triggering of debris flows that have been deposited on the fluvial terrace. Woody fragments from within the debris flows were dated using accelerator mass spectrometry 14 C radiocarbon techniques (AMS), yielding ages between 100 and 115 cal years bp , which coincides with the period of maximum deforestation and human density in the Pyrenees. Depopulation and farmland abandonment since the beginning of the 20th century has resulted in generalized natural and artificial reforestation, a shrinkage of the eroded areas and a decline in connectivity between slopes and the channel. The most important consequence has been channel incision and narrowing, and the development of a sediment armour layer. Active sediment transport is continuing, although there has been a decrease in sediment yield from the slopes. Copyright © 2014 John Wiley & Sons, Ltd. Nutzungsrecht: Copyright © 2014 John Wiley & Sons, Ltd. braided channel central Pyrenees reforestation land use changes debris flows deforestation channel incision Sanjuán, Yasmina oth Serrano‐Muela, María P oth Álvarez‐Martínez, Javier oth González‐Sampériz, Penélope oth Rubiales, Juan Manuel oth García‐Ruiz, José M oth Gómez‐Villar, Amelia oth Arnáez, José oth Enthalten in Land degradation & development Chichester, Sussex : Wiley, 1996 27(2016), 2, Seite 179-189 (DE-627)211582530 (DE-600)1319202-4 (DE-576)9211582539 1085-3278 nnns volume:27 year:2016 number:2 pages:179-189 http://dx.doi.org/10.1002/ldr.2294 Volltext http://onlinelibrary.wiley.com/doi/10.1002/ldr.2294/abstract http://search.proquest.com/docview/1764312130 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-ARC SSG-OLC-TEC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_4219 AR 27 2016 2 179-189 |
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10.1002/ldr.2294 doi PQ20160307 (DE-627)OLC1972100688 (DE-599)GBVOLC1972100688 (PRQ)p894-c2eeedbeb8f801a8c9a5ac6e4d3c92b1fd57c40a46911c7804e7cf1903fd38d03 (KEY)0175141720160000027000200179linkinglandcoverchangesinthesubalpineandmontanebel DE-627 ger DE-627 rakwb eng 630 ZDB Nadal‐Romero, Estela verfasserin aut Linking Land Cover Changes in the Sub‐Alpine and Montane Belts to Changes in a Torrential River 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Channel changes are the consequence of changes in sediment yield from the slopes and in the connectivity between slopes and channels because of distinct land use and climate impacts. In this study, we investigated the characteristics and evolution of a short reach in the headwater of the Ijuez River, central–southern Pyrenees. Assessment of a series of sedimentary and geomorphic structures confirmed major changes to the valley bottom, mainly related to changes in the intensity of human activity. The oldest sedimentary structure is a terrace level located 3 to 4 m above the current alluvial plain. General deforestation, overgrazing and recurring fires in the montane belt (1100–1600 m a.s.l.) have led to increased soil erosion and connectivity, and to the triggering of debris flows that have been deposited on the fluvial terrace. Woody fragments from within the debris flows were dated using accelerator mass spectrometry 14 C radiocarbon techniques (AMS), yielding ages between 100 and 115 cal years bp , which coincides with the period of maximum deforestation and human density in the Pyrenees. Depopulation and farmland abandonment since the beginning of the 20th century has resulted in generalized natural and artificial reforestation, a shrinkage of the eroded areas and a decline in connectivity between slopes and the channel. The most important consequence has been channel incision and narrowing, and the development of a sediment armour layer. Active sediment transport is continuing, although there has been a decrease in sediment yield from the slopes. Copyright © 2014 John Wiley & Sons, Ltd. Nutzungsrecht: Copyright © 2014 John Wiley & Sons, Ltd. braided channel central Pyrenees reforestation land use changes debris flows deforestation channel incision Sanjuán, Yasmina oth Serrano‐Muela, María P oth Álvarez‐Martínez, Javier oth González‐Sampériz, Penélope oth Rubiales, Juan Manuel oth García‐Ruiz, José M oth Gómez‐Villar, Amelia oth Arnáez, José oth Enthalten in Land degradation & development Chichester, Sussex : Wiley, 1996 27(2016), 2, Seite 179-189 (DE-627)211582530 (DE-600)1319202-4 (DE-576)9211582539 1085-3278 nnns volume:27 year:2016 number:2 pages:179-189 http://dx.doi.org/10.1002/ldr.2294 Volltext http://onlinelibrary.wiley.com/doi/10.1002/ldr.2294/abstract http://search.proquest.com/docview/1764312130 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-ARC SSG-OLC-TEC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_4219 AR 27 2016 2 179-189 |
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10.1002/ldr.2294 doi PQ20160307 (DE-627)OLC1972100688 (DE-599)GBVOLC1972100688 (PRQ)p894-c2eeedbeb8f801a8c9a5ac6e4d3c92b1fd57c40a46911c7804e7cf1903fd38d03 (KEY)0175141720160000027000200179linkinglandcoverchangesinthesubalpineandmontanebel DE-627 ger DE-627 rakwb eng 630 ZDB Nadal‐Romero, Estela verfasserin aut Linking Land Cover Changes in the Sub‐Alpine and Montane Belts to Changes in a Torrential River 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Channel changes are the consequence of changes in sediment yield from the slopes and in the connectivity between slopes and channels because of distinct land use and climate impacts. In this study, we investigated the characteristics and evolution of a short reach in the headwater of the Ijuez River, central–southern Pyrenees. Assessment of a series of sedimentary and geomorphic structures confirmed major changes to the valley bottom, mainly related to changes in the intensity of human activity. The oldest sedimentary structure is a terrace level located 3 to 4 m above the current alluvial plain. General deforestation, overgrazing and recurring fires in the montane belt (1100–1600 m a.s.l.) have led to increased soil erosion and connectivity, and to the triggering of debris flows that have been deposited on the fluvial terrace. Woody fragments from within the debris flows were dated using accelerator mass spectrometry 14 C radiocarbon techniques (AMS), yielding ages between 100 and 115 cal years bp , which coincides with the period of maximum deforestation and human density in the Pyrenees. Depopulation and farmland abandonment since the beginning of the 20th century has resulted in generalized natural and artificial reforestation, a shrinkage of the eroded areas and a decline in connectivity between slopes and the channel. The most important consequence has been channel incision and narrowing, and the development of a sediment armour layer. Active sediment transport is continuing, although there has been a decrease in sediment yield from the slopes. Copyright © 2014 John Wiley & Sons, Ltd. Nutzungsrecht: Copyright © 2014 John Wiley & Sons, Ltd. braided channel central Pyrenees reforestation land use changes debris flows deforestation channel incision Sanjuán, Yasmina oth Serrano‐Muela, María P oth Álvarez‐Martínez, Javier oth González‐Sampériz, Penélope oth Rubiales, Juan Manuel oth García‐Ruiz, José M oth Gómez‐Villar, Amelia oth Arnáez, José oth Enthalten in Land degradation & development Chichester, Sussex : Wiley, 1996 27(2016), 2, Seite 179-189 (DE-627)211582530 (DE-600)1319202-4 (DE-576)9211582539 1085-3278 nnns volume:27 year:2016 number:2 pages:179-189 http://dx.doi.org/10.1002/ldr.2294 Volltext http://onlinelibrary.wiley.com/doi/10.1002/ldr.2294/abstract http://search.proquest.com/docview/1764312130 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-ARC SSG-OLC-TEC SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_4219 AR 27 2016 2 179-189 |
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Linking Land Cover Changes in the Sub‐Alpine and Montane Belts to Changes in a Torrential River |
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Channel changes are the consequence of changes in sediment yield from the slopes and in the connectivity between slopes and channels because of distinct land use and climate impacts. In this study, we investigated the characteristics and evolution of a short reach in the headwater of the Ijuez River, central–southern Pyrenees. Assessment of a series of sedimentary and geomorphic structures confirmed major changes to the valley bottom, mainly related to changes in the intensity of human activity. The oldest sedimentary structure is a terrace level located 3 to 4 m above the current alluvial plain. General deforestation, overgrazing and recurring fires in the montane belt (1100–1600 m a.s.l.) have led to increased soil erosion and connectivity, and to the triggering of debris flows that have been deposited on the fluvial terrace. Woody fragments from within the debris flows were dated using accelerator mass spectrometry 14 C radiocarbon techniques (AMS), yielding ages between 100 and 115 cal years bp , which coincides with the period of maximum deforestation and human density in the Pyrenees. Depopulation and farmland abandonment since the beginning of the 20th century has resulted in generalized natural and artificial reforestation, a shrinkage of the eroded areas and a decline in connectivity between slopes and the channel. The most important consequence has been channel incision and narrowing, and the development of a sediment armour layer. Active sediment transport is continuing, although there has been a decrease in sediment yield from the slopes. Copyright © 2014 John Wiley & Sons, Ltd. |
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Channel changes are the consequence of changes in sediment yield from the slopes and in the connectivity between slopes and channels because of distinct land use and climate impacts. In this study, we investigated the characteristics and evolution of a short reach in the headwater of the Ijuez River, central–southern Pyrenees. Assessment of a series of sedimentary and geomorphic structures confirmed major changes to the valley bottom, mainly related to changes in the intensity of human activity. The oldest sedimentary structure is a terrace level located 3 to 4 m above the current alluvial plain. General deforestation, overgrazing and recurring fires in the montane belt (1100–1600 m a.s.l.) have led to increased soil erosion and connectivity, and to the triggering of debris flows that have been deposited on the fluvial terrace. Woody fragments from within the debris flows were dated using accelerator mass spectrometry 14 C radiocarbon techniques (AMS), yielding ages between 100 and 115 cal years bp , which coincides with the period of maximum deforestation and human density in the Pyrenees. Depopulation and farmland abandonment since the beginning of the 20th century has resulted in generalized natural and artificial reforestation, a shrinkage of the eroded areas and a decline in connectivity between slopes and the channel. The most important consequence has been channel incision and narrowing, and the development of a sediment armour layer. Active sediment transport is continuing, although there has been a decrease in sediment yield from the slopes. Copyright © 2014 John Wiley & Sons, Ltd. |
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Channel changes are the consequence of changes in sediment yield from the slopes and in the connectivity between slopes and channels because of distinct land use and climate impacts. In this study, we investigated the characteristics and evolution of a short reach in the headwater of the Ijuez River, central–southern Pyrenees. Assessment of a series of sedimentary and geomorphic structures confirmed major changes to the valley bottom, mainly related to changes in the intensity of human activity. The oldest sedimentary structure is a terrace level located 3 to 4 m above the current alluvial plain. General deforestation, overgrazing and recurring fires in the montane belt (1100–1600 m a.s.l.) have led to increased soil erosion and connectivity, and to the triggering of debris flows that have been deposited on the fluvial terrace. Woody fragments from within the debris flows were dated using accelerator mass spectrometry 14 C radiocarbon techniques (AMS), yielding ages between 100 and 115 cal years bp , which coincides with the period of maximum deforestation and human density in the Pyrenees. Depopulation and farmland abandonment since the beginning of the 20th century has resulted in generalized natural and artificial reforestation, a shrinkage of the eroded areas and a decline in connectivity between slopes and the channel. The most important consequence has been channel incision and narrowing, and the development of a sediment armour layer. Active sediment transport is continuing, although there has been a decrease in sediment yield from the slopes. Copyright © 2014 John Wiley & Sons, Ltd. |
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