Tropical deserts and semi-arid environments - Fundamentals of the Physical Environment - page 665

Plate 26.6 Mount Olga (central Australia) surrounded by semi-arid savanna vegetation, including Spinifex grass. Remnants of
humid tropical flora survive in deep gorges within the mountains, indicating former moister climate.
Photo: Cathy Lewis

Termite savanna

Clays with frequent
inundation.
Trees excluded

Downslope
nutrient
movement

Flood
hollows Grassland

on plateau

Savanna
woodland

Savanna
par k la nd

Tertiary deep -
weathering profile.
Oligotrophic soils

Thickets on deep
loose sand

Figure 26.4
Environmental relationships
in a savanna area.
Source: After Collinson (1977)

Gallery forest
along levees

Fluvial complex

Colluvial complex
Alluvial complex