Splash erosion under natural rainfall on three soil types in NE Spain
Splash detachment and transport of soil particles by raindrops impacting the soil surface is the initiating mechanism of water erosion. The amount of splash depends on the rainfall characteristics (mainly kinetic energy and intensity) and the soil properties. Experimental results of rainfall and spl...
| Autores: | , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2012 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/58320 |
| Acceso en línea: | http://hdl.handle.net/10261/58320 |
| Access Level: | acceso abierto |
| Palabra clave: | Rainfall erosivity EI30 index Splash erosion Erodibility Linear Mixed-Effects models NE Spain |
| Sumario: | Splash detachment and transport of soil particles by raindrops impacting the soil surface is the initiating mechanism of water erosion. The amount of splash depends on the rainfall characteristics (mainly kinetic energy and intensity) and the soil properties. Experimental results of rainfall and splash monitoring in three soil types under natural rainfall in NE Spain are presented. Some 27 rainfall events were evaluated, during which high rates of soil splash were measured (≤6.06 g per splash cup), stressing its importance as an erosion process on bare soils. Sources of variation of soil splash were analysed by a linear mixed-effect model. Significant relationships were found with the rainfall erosivity index EI30. No significant differences were found between the soil types analysed. The LME model explained 55% of variance, and most of the residual variability (≤ 74%) was due to differences between splash cups within a single soil type and event (i.e. to random effects). |
|---|