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
Vegetation arcs and litter dams : similarities and differences
The significance of soil, water and landscape processes in banded vegetation patterning
Australie ; Concept ; Couverture végétale ; Domaine aride ; Domaine semi-aride ; Ecosystème ; New South Wales ; Pente de versant ; Propriétés du sol ; Ruissellement ; Végétation ; Zonage
Arid area ; Australia ; Concept ; Ecosystem ; New South Wales ; Plant cover ; Rill wash ; Semi-arid area ; Slope gradient ; Soil properties ; Vegetation ; Zoning
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
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
To characterise the spatial variability of the soil surface features and their role in the hydrodynamics of the vegetation stripes, the AA. first described them along a transect perpendicular to the main axis of a stripe together with the detailed
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
Colonisation végétale ; Domaine aride ; Erosion des sols ; Erosion hydrique ; Expérimentation ; Humidité du sol ; Kenya ; Rift Valley ; Simulation de pluie ; Splash ; Surpâturage ; Versant ; Végétation
Arid area ; Experimentation ; Kenya ; Over-grazing ; Plant colonization ; Rainfall simulation ; Rift Valley ; Slope ; Soil erosion ; Soil moisture ; Splash ; Vegetation ; Water erosion
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
The significance of soil, water and landscape processes in banded vegetation patterning
Australie ; Distribution spatiale ; Domaine aride ; Géochimie ; Infiltration ; New South Wales ; Propriétés du sol ; Sel ; Sol ; Végétation ; Zonage
Arid area ; Australia ; Geochemistry ; Infiltration ; New South Wales ; Salt ; Soil ; Soil properties ; Spatial distribution ; Vegetation ; Zoning
The aim of this paper is to investigate spatial variation of soil chemical properties at an intermediate scale. It is proposed that there is an association between the different vegetation and soil surface (soil and biotic crusts) units
and the underlying soil chemical properties; that bare areas have a relatively larger soluble salt concentration compared to the vegetated areas. A model that explains this distribution, and incorporates vegetation, microtopographic and infiltration differences
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.
The significance of soil, water and landscape processes in banded vegetation patterning
Australie ; Biodiversité ; Couverture végétale ; Domaine semi-aride ; Eau du sol ; Ecosystème ; Formation arbustive ; Modèle ; New South Wales ; Queensland ; Ruissellement ; Savane ; Simulation ; Végétation ; Zonage
Australia ; Biodiversity ; Ecosystem ; Model ; New South Wales ; Plant cover ; Queensland ; Rill wash ; Savanna ; Scrub ; Semi-arid area ; Simulation ; Soil water ; Vegetation ; Zoning
In many arid and semi-arid environments around the world, limited rainfall and runoff-runon processes have lead to vegetation patchiness on many types of landscapes. With simulations studies, the AA. address 2 related questions. Firstly, compared
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
This paper aims to calculate water balance of an entire tiger bush unit, including bare and vegetated areas, to validate a rain redistribution hypothesis. They monitored measurements of runoff and soil moisture content in each zone composing a tiger
The significance of soil, water and landscape processes in banded vegetation patterning
Albacete ; Climat ; Cycle de l'eau ; Domaine aride ; Domaine méditerranéen ; Eau du sol ; Erosion des sols ; Erosion hydrique ; Espagne ; Infiltration ; Murcia ; Précipitation ; Ruissellement ; Simulation de pluie ; Sol ; Valencia ; Végétation
Albacete ; Arid area ; Climate ; Infiltration ; Mediterranean area ; Murcia ; Precipitation ; Rainfall simulation ; Rill wash ; Soil ; Soil erosion ; Soil water ; Spain ; Valencia ; Vegetation ; Water cycle ; Water erosion ; Zoning
. Rainfall simulations experiments were carried out to determine runoff and infiltration characteristics of the bare and vegetated zones. The largest amount of redistribution during these events is found for areas having an intermediate rainfall regime