HKDSE Geography/M5/Farming Inputs in the Sahel

Physical Inputs
Pastureland is limited since the carry capacity of the land is low.

Note on climate

 * The Sahel has a semi-arid climate.
 * Affected by high-pressure belts (subtropical highs), they face sinking air. The air diverges to form offshore winds. There is thus a loss of moisture. High pressure leads to a lack of uprising air and thus scanty rainfall.
 * As it is an inland location, it lacks the mediating effect of seawater, so it is very hot in summer. Intense solar radiation creates a high evaporation rate, which reduce soil moisture, hindering crop growth.