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Hidrofobia en suelos mediterráneos semiáridos: implicaciones hidrológicas para una pequeña cuenca experimental en el SE Ibérico

Authors: Contreras, Sergio; Solé-Benet, Albert;

Hidrofobia en suelos mediterráneos semiáridos: implicaciones hidrológicas para una pequeña cuenca experimental en el SE Ibérico

Abstract

[ES] Las elevadas heterogeneidades de los regímenes de precipitación y de las propiedades edáficas que caracterizan a los ambientes semiáridos propician la aparición de complejos teselares de vegetación que pueden llegar a tener repercusiones hidro-geomorfodinámicas a diferentes escalas. A su vez el fenómeno de hidrofobia puede adquirir una gran relevancia en estos ambientes siendo la vegetación la principal fuente de aporte de compuestos hidrofóbicos. El presente trabajo pone de manifiesto la existencia de suelos hidrofóbicos en un ambiente semiárido del SE ibérico, así como el papel que desempeñan la vegetación, la textura del suelo y las letrinas de conejos en la aparición del fenómeno. Para demostrarlo se ha realizado una aproximación a diferentes escalas (medidas de hidrofobia puntual, simulaciones de lluvia en parcelas de 0.24 m2 y medidas de escorrentía bajo condiciones de lluvia naturales en parcelas de 20 m2). Se discuten las repercusiones que la repelencia puede tener a escala de cuenca y las implicaciones en los flujos hídricos y dinámica de sedimentos.

[EN] Semiarid environments are characterised by the high variability of rainfall and the spatial heterogeneity of soil surface properties. These conditions favour the formation of sparse vegetation mosaics constituted by cells of plant patches and bare ground, that behave like sources and sinks of water and sediment fluxes. In turn, in these environments, the hydrofobicity phenomena may reach a great relevance, being the vegetation the main source of hydrophobic compounds. The present work shows the existence of water repellent soils in a semiarid environment in SE Spain and studies the role played by the vegetation, the soil properties and the latrines of rabbits in soil hydrophobicity generation. To demonstrate it, an approach at different scales (point hydrophobicity measurements, rain simulations in 0.24 m2 plots and runoff data from 20 m2 plots in natural rainfall events) has been carried out. The impacts of hydrophobicity at hillslope and catchment scale as well as and the implications in the hydrological responses are discussed.

Peer reviewed

Keywords

hidrofobia, infiltración, Runoff, escorrentía, Hydrophobicity, Infiltration, Artículos de Investigación, Distribución espacial, Hidrofobia, distribución espacial, Spatial distribution, Infiltración, Escorrentía

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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