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Open Access item Fluvial adjustments to soil erosion and plant cover changes in the central Spanish Pyrenees

Authors:Beguería, Santiago
López-Moreno, Juan I.
Gómez-Villar, Amelia
Rubio, Virginia
Lana-Renault, Noemí
García-Ruiz, José María
Keywords:fluvial adjustments, sediment yield, fluvial incision, farmland
Issue Date:Sep-2006
Publisher:John Wiley & Sons
Citation:Geografiska Annaler: Series A, Physical Geography 88 (3): 177-186 (2006)
Abstract:Until the middle of the 20th century, Pyrenean rivers were characterized by braided channels, unstable sedimentary structures and an almost complete lack of plant cover in the alluvial plain, due to the high sediment yield in hillslopes and the occurrence of frequent and intense flooding. This was probably related to strong demographic pressures, including the cultivation of steep slopes, frequent fires, deforestation and overgrazing. Depopulation and farmland abandonment resulted in plant recolonization in formerly cultivated areas, causing a decrease in runoff and sediment yield. As a consequence, most Pyrenean rivers tend to reduce the width of the alluvial plain and to replace the braided pattern with an incised, somewhat meandering pattern, involving the construction of new terrace levels and the stabilization of fluvial bars.
Description:23 Pag., 1 Tabl., 5 Fig., 1 Phot. The definitive version is available at: www3.interscience.wiley.com
Publisher version (URL):http://www3.interscience.wiley.com/cgi-bin/fulltext/118596679/PDFSTART
URI:http://hdl.handle.net/10261/21186
ISSN:0435-3676
???metadata.dc.identifier.doi???:10.1111/j.1468-0459.2006.00293.x
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