Effects of water quality on infiltration, runoff and interril erosion processes during simulated rainfall
Belgium ; Clay mineral ; Comparative study ; Infiltration ; Italy ; Rainfall simulation ; Rill wash ; Salinity ; Soil ; Soil erosion ; Toscana ; Water erosion ; Water quality
This paper discusses the effects of water quality on the hydrological and erosion response of non-saline, non-sodic soils during simulated rain experiments. Two soils, a well-aggregated clay-rich soil developed on marine silty clay deposits
and a soil developed on silt loam, were selected and subjected to a series of simulated rainstorms using demineralized water and tap water. The hydrological response (infiltration, runoff), the physical degradation (soil surface roughness change and top-soil
Aerial photography ; Belgium ; Comparative study ; Cultivated land ; Erodibility ; Gully erosion ; Loess ; Mediterranean area ; Model ; Portugal ; Soil erosion ; Spain ; Water erosion ; Watershed
Ephemeral gully erosion is a significant water erosion process, accounting for 50% of the total sediment production in agricultural catchments in the Belgian loess belt. Therefore the aim of this study is to address 4 basic questions : what
are the ephemeral gully characteristics ? why is ephemeral gully erosion an important water erosion process ? when/where will ephemeral gullies occur ? how do ephemeral gullies evolve over time ?
Agricultural practice ; Erosion control ; Erosion rate ; Ethiopia ; Gully erosion ; Human impact ; Mountain ; Sediment budget ; Soil erosion ; Water erosion ; Watershed
and rates of sediment deposition within the catchment (essentially induced by recent soil conservation activities), were measured using a range of geomorphological methods. Soil loss rates by water (gully erosion) are important and also tillage erosion
the greatest impact on topsoil movement. Soil flux by tillage erosion is quantified as a function of slope angle and slope length. A comparison with soil losses due to water erosion is made, and finally the implications for agricultural sustainibility
Experimentation ; Grain size distribution ; Indiana ; Runoff ; Sediment load ; Semi-arid area ; Slope gradient ; Soil erosion ; Turbulence ; United States of America ; Water regime ; Watershed