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Résultats de la recherche (15 résultats)

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  • Effects of microbiotic crusts under cropland in temperate environments on soil erodibility during concentrated flow
  • To study the effect of microbiotic soil crusts on soil erosion resistance of loess-derived soils under cropland during concentrated runoff, two study areas in central Belgium were selected in the vicinity of the cities of Leuven and Sint-Truiden
  • . The soils in both areas developed on the loess that covers Tertiary sandy deposits. Three stages of microbiotic crust development on cropland soils are distinguished. The results suggest that the possible magnitude of the microbiotic soil crust effect
  • is not negligible compared with the effect of vegetation ground cover. Microbiotic crusts thus help conserve soils.
  • Effects of water quality on infiltration, runoff and interril erosion processes during simulated rainfall
  • 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
  • Effects of land use and land cover on sheet and rill erosion rates in the Tigray highlands, Ethiopia
  • The AA. conducted runoff plot experiments in the semi-arid north Ethiopian Tigray highlands to investigate whether erosion rates are within the same order of magnitude as the rates observed in central, east and south Ethiopia, to measure the effects
  • Rainfall-induced consolidation and sealing effects on soil erodibility during concentrated runoff for loess-derived topsoils
  • Flume experiments simulating concentrated runoff were carried out on remolded silt loam samples to measure the effect of rainfall-induced soil consolidation and soil surface sealing on soil erosion by concentrated flow for loess-derived soils
  • Effects of grass roots on the erodibility of topsoils during concentrated flow
  • length density. Grass roots are very effective in reducing soil detachment rates.
  • Effects of rock fragments incorporated in the soil matrix on concentrated flow hydraulics and erosion
  • discharge were also considered as treatments. Qualitative and quantitative measures describing the effect of rock fragment on soil loss are presented.
  • Effects of region-wide soil and water conservation in semi-arid areas : the case of northern Ethiopia
  • This paper investigates the effects of rock fragment properties on interrill soil surface roughness. Therefore, the surface roughness evolution of 13 simulated plough layers with different rock fragment content, rock fragment size and initial
  • moisture content was studied during rainfall in the laboratory. In order to evaluate the long-term effects of rainfall and sheet erosion on surface roughness of stony interrills, two abandoned hillslopes in southeastern Spain were investigated. Relations
  • to investigate the effect of particle shape. The results suggest that the calibration relationships are quite robust as long as the clay mineralogy of the samples is similar.
  • The effect of rock fragment content on fine soil bulk density is investigated and a relation is proposed. Such a relation is an extension of an algorithm that allows the estimate of soil bulk density when rock fragments are not present. A comparison
  • The aim of this study is to assess the effect of manual tillage on soil movement under conditions prevailing in northern Thailand. The AA. focus on the deep tillage operation (rough tillage) which is the first step in land preparation, as it has
  • on the intensity of the process which can then be compared to the reported intensity of other processes causing the movement of rock fragments on steep slopes. Furthermore, the effect of rock fragment movement on downslope and vertical sorting are analysed.
  • In order to predict the root effect more accurately, this experimental study aims at gaining more insight into the importance of root architecture, soil and flow characteristics to the erosion-reducing potential of roots during concentrated flow
  • This paper describes the impact of land use changes on geomorphologic activity in the Andes Mountains in Ecuador. More specifically, it aims to identify the major factors controlling land use change on a decadal time scale, and assess the effects
  • This study presents a sensitivity analysis of the soil erosion model LISEM, whereby not only the sensitivity to parameter values is considered, but attention is focused on the effects of process descriptions and the routing of overland flow