676
Climatic Geomorphology
Figure 25.32. Dormant longitudinal dunes with well-developed shrub-like vegetation. The mobility of
the sand is limited to the crests of dunes, while flanks are stabilized by biocrusts and shrubs. Experimental
Estation of Nizzana, western Negev Desert, Israel.
(Figure 25.32). In general, they are located in areas with 100 to 300 mm of precipitation,
great variability in year-on-year precipitation, in such a form that in dry periods land cover
decreases and sand mobilizes. The effect is the opposite in wet years. In these dunes,
primary sedimentary structures are affected by bioturbation. Vegetation shows a good
state of development with high percentages of perennial plants. Inactive, fixed or relict
Figure 25.33. Inactive dunes with shrubs and trees cover. Beer Sheva region, Negev Desert, Israel.
Climatic Geomorphology
Figure 25.32. Dormant longitudinal dunes with well-developed shrub-like vegetation. The mobility of
the sand is limited to the crests of dunes, while flanks are stabilized by biocrusts and shrubs. Experimental
Estation of Nizzana, western Negev Desert, Israel.
(Figure 25.32). In general, they are located in areas with 100 to 300 mm of precipitation,
great variability in year-on-year precipitation, in such a form that in dry periods land cover
decreases and sand mobilizes. The effect is the opposite in wet years. In these dunes,
primary sedimentary structures are affected by bioturbation. Vegetation shows a good
state of development with high percentages of perennial plants. Inactive, fixed or relict
Figure 25.33. Inactive dunes with shrubs and trees cover. Beer Sheva region, Negev Desert, Israel.