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Résultats de la recherche (22 résultats)

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  • A geomorphological based banded (tiger) vegetation pattern related to former dune fields in Sokoto (Northern Nigeria)
  • The significance of soil, water and landscape processes in banded vegetation patterning
  • The described banded vegetation pattern was observed on aerial photographs of the Northern part of Sokoto province in Northern Nigeria. The orientation of the bands (about NNW-SSE) is perpendicular to the prevailing wind direction (ENE-WSW) during
  • the period of formation of the former dunes. The genesis of this pattern of regional scale appears to be quite different from local scale banded patterns known in dry zones in Africa and Asia and described as Brousse tigrée, being moving vegetation arcs
  • 1999
  • Soil and water components of banded vegetation patterns
  • The significance of soil, water and landscape processes in banded vegetation patterning
  • Banded landscapes are comprised of alternating bands of vegetation and bare ground aligned along the contours in arid and semi-arid regions, on very gentle and uniform slopes. The objective of this paper is to review some of the major findings
  • pertaining to soil and water components of banded vegetation patterns.
  • 1999
  • Stripes, strands or stipples : modelling the influence of three landscape banding patterns on resource capture and productivity in semi-arid woodlands, Australia
  • The significance of soil, water and landscape processes in banded vegetation patterning
  • ), or occur in short bands (stripes) or as long bands (strands)?
  • 1999
  • Banded vegetation near Broken Hill, Australia : significance of surface roughness and soil physical properties
  • The significance of soil, water and landscape processes in banded vegetation patterning
  • Selected physical properties of the soils developed within a strongly-banded grassland in arid New South Wales were investigated to reveal their possible significance for the hydrologic and erosional behaviour of the mosaic landscape. Detailed
  • surface microtopography, surface roughness, soil bulk density and the unconfined compressive strength of the soils were determined using linear transects across the banded mosaic.
  • 1999
  • Testing the validity of upslope migration in banded vegetation from south-west Niger
  • The significance of soil, water and landscape processes in banded vegetation patterning
  • The aim of this study is to measure net soil flux in south-west Niger using Cs 137 and to relate it to surface features and transitions in the structure of the brousse tigrée in an attempt to validate the model and quantify the rate of upslope band
  • 1999
  • Laboratory experiments on sequential scour/deposition and their application to the development of banded vegetation
  • The significance of soil, water and landscape processes in banded vegetation patterning
  • variations in moisture storage capacity. Experimental results indicate that vegetation bands at the scale observed at Baringo (Rift Valley, Kenya) are consistent with development by sequential scour and deposition, caused by some combination of sheetwash
  • 1999
  • Water balance in a banded vegetation pattern. A case study of tiger bush in western Niger
  • The significance of soil, water and landscape processes in banded vegetation patterning
  • 1999
  • The significance of soil, water and landscape processes in banded vegetation patterning
  • The aim here is to measure net soil flux in south-west Niger using Cs 137 and to relate it to surface features and transitions in the structure of the brousse tigrée in an attempt to validate the model and quantify the rate of upslope band migration.
  • 1999
  • The significance of soil, water and landscape processes in banded vegetation patterning
  • Vegetation arcs are near parallel bands of denser vegetation aligned perpendicular to slope and separated by barer inter-arc zones. These patterns occur in arid and semi-arid areas of gentle gradient. Similar, but much smaller scale patterns, here
  • 1999
  • The significance of soil, water and landscape processes in banded vegetation patterning
  • Examples are presented from 2 locations in SE and NE Spain where patterned or banded vegetation are found on semi-natural and abandoned land or where vegetation is recovering from wildfire. In both cases patterns are being investigated as process
  • 1999
  • The significance of soil, water and landscape processes in banded vegetation patterning
  • Etude des formations de brousse tigrée du Gourma, au Mali et dans le nord du Burkina. Estimation de l'impact respectif du vent et de la topographie sur leur répartition. Mise en évidence d'une migration vers le haut de ces bandes de végétation.
  • 1999
  • The significance of soil, water and landscape processes in banded vegetation patterning
  • 1999
  • Cet article décrit des sols striés à High Pike dans le nord du Lake District en Angleterre. Ils se trouvent à 658 m d'altitude sur un éboulis incliné. Les bandes de matériaux grossiers présentent une largeur moyenne de 37 cm. Ce triage bien
  • 1999
  • particle size diminution coefficient data against stream length is presented which shows that all the data lie within a single narrow band extending over virtually the whole range of stream lengths and bed sediment particle sizes found on Earth.
  • 1999
  • The significance of soil, water and landscape processes in banded vegetation patterning
  • 1999
  • The significance of soil, water and landscape processes in banded vegetation patterning
  • 1999
  • . Ils ont utilisé le modèle de transfert radiatif 5S (Simulation du signal satellitaire dans le spectre solaire) pour leurs simulations en considérant les bandes spectrales appropriées aux capteurs MEIS-II, du Centre canadien de télédétection, et TM de
  • 1999
  • méthodes d'analyse d'image et la combinaison de bandes spectrales fournissent l'essentiel de l'information sur tous les aspects de la morphogenèse. Les applications comprennent l'étude détaillée des reliefs et des types de sédiments quaternaires.
  • 1999
  • implantations selon leur localisation, leur taille et leur nature. Définition de l'activité à plusieurs niveaux (noeuds, axes et types d'unités). Croissance importante dans la bande des plus hauts revenus du secteur sud-est, tandis que le centre-ville est occupé
  • 1999