Belgique ; Erosion des sols ; Modèle ; Modèle numérique de terrain ; Pratique culturale ; Ruissellement ; Utilisation agricole du sol ; Versant
Agricultural land use ; Agricultural practice ; Belgium ; Digital elevation model ; Model ; Rill wash ; Slope ; Soil erosion
A model, the Tillage-Controlled Runoff Pattern model (TCRP model) was developed to create a runoff pattern with flow in the direction of the plough-lines for all tilled fields within a catchment. The model needs a digital elevation model (DEM
), a landuse map and the major tillage orientation per tilled field as input. Runoff patterns created with the model could be used in any raster-based erosion model. The effect of the runoff pattern on simulated erosion patterns is shown for one field using
Belgium ; Digital elevation model ; Holocene ; Loess ; Model ; Palaeogeography ; Palaeogeomorphology ; Soil erosion ; Topography ; Watershed
The AA. present a topography based hillslope erosion and deposition model that is based on the WATEM/SEDEM model structure and works on a millennial time scale. Soil erosion, transport and deposition are calculated using slope and unit contributing
area. The topography is iteratively rejuvenated by taking into account modelled erosion and deposition rates, thereby simulating topographic development backwards in time. The model is spatially evaluated, using detailed estimates for historical soil
erosion and show that the model can simulate realistic soil redistribution patterns.
The AA. present a spatially distributed model for the calculation of sediment delivery to river channels (SEDEM : SEdiment DElivery Model) at a catchment scale (100 to 10 000 km2). The model was applied on several catchments in central Belgium
GIS-based simulation of erosion and deposition patterns in an agricultural landscape: a comparison of model results with soil map information
Agropédologie ; Belgique ; Erosion des sols ; Modèle ; Simulation ; Système d'information géographique ; Topographie ; Transport sédimentaire ; Vlaanderen
Agropedology ; Belgium ; Flanders ; Geographical information system ; Model ; Sediment transport ; Simulation ; Soil erosion ; Topography
This paper presents a relatively simple, two-dimensional hillslope erosion-deposition model: the model differs from most geomorphological models in that it does not assume that erosion by surface wash is always transport-limited. As a first test
, the model is applied to an agricultural catchment in Central Belgium. Here, patterns of past erosion and deposition can be deduced from information contained in the Belgian Soil Map so that a qualitative validation of the model results is possible.
The European Soil Erosion Model (EUROSEM) : a dynamic approach for predicting sediment transport from fields and small catchments
Bassin-versant ; Concept ; Erosion des sols ; Erosion hydrique ; Europe ; Modèle ; Ravinement ; Ruissellement ; Splash ; Transport sédimentaire
Concept ; Europe ; Gully erosion ; Model ; Rill wash ; Sediment transport ; Soil erosion ; Splash ; Water erosion ; Watershed
The European Soil Erosion Model (EUROSEM) is a dynamic distributed model, able to simulate sediment transport, erosion and deposition over the land surface by rill and interill processes in single storms for both individual fields and small
catchments. This paper describes the outcome of the resulting research effort which has led to the EUROSEM. In addition, emphasis is given to the features which make it different from and an advance upon the American and Australian models.
Modelling land use changes and their impact on soil erosion and sediment supply to rivers
Bassin-versant ; Belgique ; Bilan sédimentaire ; Déboisement ; Erosion des sols ; Modèle ; Propriétés du sol ; Reboisement ; Statistique ; Utilisation du sol ; Vlaanderen
Belgium ; Deforestation ; Flanders ; Land use ; Model ; Reforestation ; Sediment budget ; Soil erosion ; Soil properties ; Statistics ; Watershed
of a soil erosion model (RUSLE; Renard et al., 1991) and a sediment delivery model (SEDEM; Van Rompaey et al., 2001b). The Dijle catchment in central Belgium is used as an example application.
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
. As erosion models include a wide range of processes (i.e. rainfall, interception, surface storage, overland flow, soil erosion and deposition), this implies that only a relatively small fraction of all possible variations is explored here.
Spatially distributed data for erosion model calibration and validation : the Ganspoel and Kinderveld datasets
Bassin-versant ; Belgique ; Distribution spatiale ; Ecoulement ; Erosion des sols ; Loess ; Modèle ; Précipitation ; Ravinement ; Utilisation agricole du sol
Agricultural land use ; Belgium ; Gully erosion ; Loess ; Model ; Precipitation ; Runoff ; Soil erosion ; Spatial distribution ; Watershed
The AA. describe a dataset that offers possibilities for improved evaluation and parameterisation of spatially distributed soil erosion models. The dataset combines rainfall, runoff and sediment discharge data collected at the outlet and field
surveys within the catchments that describe soil surface charcteristics and soil erosion features. The paper dicusses and illustrates the use of the dataset to narrow uncertainties associated with model predictions.
Algorithm ; Forecast ; Gully erosion ; Model ; Numerical model ; Runoff ; Slope ; Soil erosion
Comparaison de 6 algorithmes de l'écoulement, traduisant la façon dont la matière peut être transférée sur des modèles numériques de terrain. Mise en évidence de 3 groupes qui produisent des résultats très différents, et créent une distinction
Specific sediment yield in Tigray-Northern Ethiopia : assessment and semi-quantitative modelling
Bassin-versant ; Bilan sédimentaire ; Erosion des sols ; Ethiopie ; Gestion de l'eau ; Lac artificiel ; Modèle ; Sédimentation
Ethiopia ; Model ; Reservoir ; Sediment budget ; Sedimentation ; Soil erosion ; Water management ; Watershed
Sediment deposition in reservoirs is a serious off-site consequence of soil erosion in Tigray. Field rating of catchment characteristics and the sediment yield data from the reservoir survey were used for calibration and validation of the models
Belgique ; Erosion des sols ; Expérimentation ; Granulométrie ; Modèle ; Pente de versant ; Ruissellement ; Transport sédimentaire
Belgium ; Experimentation ; Grain size distribution ; Model ; Rill wash ; Sediment transport ; Slope gradient ; Soil erosion
specifically, the study investigates to what extent sediment deposition (both total mass and sediment quality) can be predicted using the simple theory for flows with a shear stress below the threshold value, and which modelling approach can best be used once
will have the same causal factors as the landslides initiated in the past. Significant model results were obtained, with pre-landslide hillslope gradient and 3 different clayey lithologies being important predictor variables. Receiver Operating
Characteristics (ROC) curves and the Kappa index were used to validate the model. The results allow to conclude that the model is capable of predicting hillslope sections prone to landsliding.
Erosion des sols ; Espagne ; Expérimentation de terrain ; Modèle numérique ; Murcia ; Pierrosité ; Pratique culturale ; Ravinement ; Traceur ; Utilisation agricole du sol ; Utilisation du sol ; Versant ; Vitesse d'érosion
Agricultural land use ; Agricultural practice ; Erosion rate ; Field experiment ; Gully erosion ; Land use ; Murcia ; Numerical model ; Slope ; Soil erosion ; Spain ; Tracer