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  • On the characteristics and origin of closed depressions in loess-derived soils in Europe - a case study from central Belgium
  • This study investigates the origin of closed depressions (CDs) in a study area southwest of Leuven. First, a study of the morphological characteristics of the CDs was made. Next, the relationship between the spatial distribution of the CDs
  • and geology, topography and land use was investigated. Based on a review of historical archives and on soil augerings, the origin of the CDs was reconstructed. In addition, the infilling of one CD was studied in detail to determine the mean erosion rate since
  • cultivation began in the study area, and this erosion rate is compared with published data.
  • On the origin of rock fragment mulches on vertisols : a case study from the Ethiopian highlands
  • Ethiopia, for the period 01/1999-05/2003, this study aims to provide a better understanding of the process of up-squeezing and underground structures and soil displacements.
  • In this study, the influence of 3 representative species of the Mediterranean matorral on slope microtopography is determined and the processes that take part in the development of microtopographic structures beneath the plant canopy are identified
  • . The influence of slope gradient, plant species and plant parameters on the shape and height of microtopographic studies is also studied. Main processes were identified as affecting mound development in the studied field site : sedimentation, differential
  • By studying the causal factors for landslides in a small mountainous area of Manjiya County, this paper tries to contribute to the restricted knowledge on landslides in East Africa. After a brief introduction of the study area and the spatial
  • The study area is part of the Belgian loess belt and is located south of Leuven. The objectives of this study are : to determine the spatial distribution of closed depressions (CDs) within an ancient forest area and under cropland; to determine
  • Assessment of gully erosion rates through interviews and measurements : a case study from northern Ethiopia
  • representative case-study areas. The results reveal that rapid gully development in the study area is some 50 years old and is mainly caused by human-induced environmental degradation.
  • This paper presents some results of a survey conducted to study the temporal and spatial variability of the erosional system in two adjacent cultivated catchments in the Belgian Loam belt. Assessment of soil erosion rates, some controlling factors
  • and sediment sources was carried out between October 1989 and October 1992. Furthermore, this study tries to establish a sediment budget for a small (25 ha), cultivated catchment in the Loam Belt of Belgium.
  • A long flume study of the dynamic factors affecting the resistance of a loamy soil to concentrated flow erosion
  • of a landscape to gully erosion. Two important components of gully erosion studies are the prediction of where gullies begin and where they end. To address some of these issues, topographical thresholds for gully initiation and sedimentation in 6 different
  • Mediterranean study areas were established. Discussion of the results.
  • An EGEM-input data set for 86 ephemeral gullies was collected : detailed measurements of 46 ephemeral gullies were made in intensively cultivated land in southeast Spain (Guadalentin study area) and another 40 ephemeral gullies were measured in both
  • intensively cultivated land and abandoned land in southeast Portugal (Alentejo study area). Together with the assessment of all EGEM-input parameters, the actual eroded volume for each ephemeral gully was also determined in the field. The resulting
  • Ephemeral gullying is an important erosion process in Mediterranean areas. The objective of this study was to investigate to what extent one could use field measurements of S (local slope) and A (drainage-basin area) to predict the location
  • of ephemeral gully initiation in intensively cultivated Mediterranean environments. Two relatively homogeneous study areas in Southeast Spain and Northeast Portugal with widespread ephemeral gullying were selected.
  • This study makes a multi-scale assessment over a time span of 30 years of environmental rehabilitation in one of the world's most degraded areas : the Tigray highlands. It study shows that in Tigray sheet and rill erosion rates have decreased
  • 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
  • Prediction of landslide susceptibility using rare events logistic regression : a case-study in the Flemish Ardennes (Belgium)
  • 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
  • The aim of this study is to examine secondary dispersal in exclosures, and more specifically to test the hypotheses that seeds of African wild olive deposited under the protective crowns of shrubs are less likely to be lost by surface wash than
  • seeds in the bare inter-plant areas; and that seeds in the latter are more likely to be translocated by runoff to microsites under shrubs than to other open areas. The study area is located in the Geba river catchment, central Tigray, northern Ethiopia.
  • The aims of this study are to estimate the sediment volume stored in the Holocene alluvium of a representative small river in the Belgian loess belt and to establish a chronology of sediment deposition. Furthermore, estimates of Holocene soil
  • This study tested the potential of LIDAR (Light Detection and Ranging) images for mapping old landslides under forest. Landslide inventory maps were created for a 125 km2 area by applying the expert knowledge of 7 geomorphologists to LIDAR-derived
  • In this study, short-term headcut retreat was monitored from 46 active bank gullies, selected in the Guadalentin and the Guadix basin in Southeast Spain, over two years. The AA. investigate the relationship between annual gully head retreat rate
  • This special issue is based on a selection of papers presented during the 2nd International Symposium on Gully erosion under global change, convened in Chengdu, China, 2002. The AA. introduce this volume by reviewing recent studies on impacts