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PORTAIL D'INFORMATION GÉOGRAPHIQUE

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  • Effects of region-wide soil and water conservation in semi-arid areas : the case of northern Ethiopia
  • Arid area ; Ecosystem ; Ethiopia ; Gully erosion ; Plant canopy ; Rill wash ; Semi-arid area ; Soil conservation ; Soil erosion ; Water erosion
  • 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
  • Arid area ; Erosion rate ; Ethiopia ; Experiment plot ; Land use ; Mountain ; Plant cover ; Rill wash ; Runoff ; Semi-arid area ; Soil erosion
  • Agricultural practice ; Arid area ; Cultivated land ; Desertification ; Ethiopia ; Rill wash ; Semi-arid area ; Slope gradient ; Soil ; Spatial distribution
  • Gully erosion in mountain areas : processes, measurement, modelling and regionalization
  • 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 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