Savannah/sudan Climate

• It is characterized by an extreme diurnal range of temperature.
• The vegetation consists of tall grass and short trees. Parklands describe such vegetation.
• The trees are deciduous and decrease in height and density away from the equator.
• The savanna, particularly in Africa, is the home of wild animals. It is known as the big game country’ and thousands of animals are trapped or killed each year by people from all over the world.
• These regions thus, have poor lateritic soils incapable of supporting good crops. Hot Deserts and Mid-Latitude Deserts.
• Deserts are regions of scanty rainfall which may be like the hot deserts of the Saharan type; or temperate as are the mid-latitude deserts like the Gobi.
• The aridity of the hot deserts is mainly due to the effects of off-shore Trade Winds; hence they are also called Trade Wind Deserts.
• The temperate deserts are rainless because of their interior location in the temperate latitudes, well away from the rain-bearing winds.
• The diurnal range of temperature in the deserts is very great.
• Vegetation is xerophytic or drought resistant.
• Intense evaporation increases the salinity of the desert soil so that the dissolved salts tend to accumulate on the surface forming hardpans. Absence of moisture retards the rate of decomposition and desert soils are very deficient in humus.

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