Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Flow and sediment connectivity in Semi-Arid Landscapes in SE Spain: Patterns and Controls
Year:2015
Research Areas
  • Hydrology
Information
Abstract
Much of the water and sediment fluxes in semi-arid catchments are found to be highly concentrated in localized pathways. Identifying the location of these pathways in the landscape is important for management and restoration. Measures can then be targeted so as to minimize the potential for erosion and sediment flux along these pathways. A method of repeat field mapping of flow and sediment pathways suitable for Mediterranean catchments is presented. Several small catchments in Cárcavo basin, SE Spain, differing in topographic and land use characteristics, were monitored under several events. Morphometric properties of pathways were analysed and compared with rainfall characteristics. Number and length of pathways varied with rainfall characteristics and also antecedent conditions. In low rainfall events, runoff sources and main pathways were disconnected, but in a larger event, the network of pathways became fully connected. The pathway patterns showed that man-made lines such as terrace embankments and tracks have a major influence on sediment connectivity. Micro-topographic factors, soil moisture and the presence of vegetation are highly influential on pathways and the frequency of water and sediment fluxes. Runoff and erosion hotpots for the development of pathways were identified, which should be targeted for mitigation and restoration measures using vegetation. The relevance of local scale factors emphasizes the importance of repeat field observations to understand connectivity and pathways development in the landscape
International
Si
JCR
Si
Title
Land Degradation & Development
ISBN
1085-3278
Impact factor JCR
2,058
Impact info
Volume
27
10.1002/ldr.2352.
Journal number
2
From page
1032
To page
1044
Month
SIN MES
Ranking
Participants
  • Autor: Miguel Marchamalo Sacristan (UPM)
  • Autor: JM Hooke (Department of Geography and Planning, University of Liverpool, Liverpool, UK)
  • Autor: PJ Sandercock (Jacobs, Bendigo,, Australia)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Hidrobiología
  • Departamento: Ingeniería y Morfología del Terreno
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)