Linking land cover changes in the subalpine and montane belts to changes in a torrential river.

Sanjuan, Yasmina and Gómez Villar, Amelia and Nadal Romero, María Estela and Álvarez Martínez, Javier and Arnáez, José and Serrano Muela, María P. and Rubiales Jimenez, Juan Manuel and González Sampériz, Penelope and García Ruiz, Jose M. (2014). Linking land cover changes in the subalpine and montane belts to changes in a torrential river.. "Land Degradation & Development" ; ISSN 1085-3278. https://doi.org/10.1002/ldr.2294.

Description

Title: Linking land cover changes in the subalpine and montane belts to changes in a torrential river.
Author/s:
  • Sanjuan, Yasmina
  • Gómez Villar, Amelia
  • Nadal Romero, María Estela
  • Álvarez Martínez, Javier
  • Arnáez, José
  • Serrano Muela, María P.
  • Rubiales Jimenez, Juan Manuel
  • González Sampériz, Penelope
  • García Ruiz, Jose M.
Item Type: Article
Título de Revista/Publicación: Land Degradation & Development
Date: 2014
ISSN: 1085-3278
Subjects:
Faculty: E.T.S.I. Montes (UPM)
Department: Silvopascicultura [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Channel cbanges are the consequence of cbanges in sediment yield from the slopes and in the connectivity between slopes and channels bccause of distinct land use and climate inJpacts. In Ibis study, we investigated the characteristics and evolution of a short reach in the headwater of the !juez River, central-soutbem Pyrenees. Assessment of a series of sedimentar)' and geomorphic structures confirtned major cbanges to the valley boUom, mainly related to changes in the intensity of human activity. 'The oldest sedimentar)' structure is a terrace leve! located 3 10 4 m above the current alluvial plain. General deforestation, overgrazing and recwring tires in the montane belt ( 1100-1600 m a.sJ.) have led 10 increased soil erosioo and connectivity, and to tbe triggering of debris llows thal have been deposited on the fluvial tmace. Woody fragments from within the debris llows were dated using acceleraror mass spectrOmetry '"e radiocaroon tcchniques (AMS), yielding ages between 1 00 and 115 cal years BP, whicb coincides with tbe period of maximum deforestalion and human density in the Pyrenees. Depopulation and fannland abaodonment since tbe beginning of tbe 2001 oenrury has resulled in generalliJcod natural and artificial reforestation, a shrinkage of the eroded arcas aod a decline in connectivi¡y bdween slopes and the channel. 1be rnost impor1an1 consequence has been cbannel incision and oarrowing, and the development of a sedimed annour !ayer. Active sedimenl b8llSpOI1 is continui.Qg, although there has been a decrease in sed.iment yield from the slopes. Copyright O 2014 John Wiley & Soos, Ltd.

More information

Item ID: 36166
DC Identifier: http://oa.upm.es/36166/
OAI Identifier: oai:oa.upm.es:36166
DOI: 10.1002/ldr.2294
Deposited by: Memoria Investigacion
Deposited on: 19 Jun 2015 07:45
Last Modified: 17 Jul 2015 06:51
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