Study Geography notes on Land Reclamation for O-Level. Useful for revision, homework, and exam preparation in Zimbabwe.
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This is the O-Level Geography notes. It is a free notes for revision.
FORM 4 GEOGRAPHY LAND RECLAMATION Land reclamation is the process of converting wasteland into farm land for growing of crops and keeping of animals while land rehabilitation is the process of restoring land to its former productive state. Importance 1. Intensify food production to feed the ever increasing population 2. To overcome land shortage and pressure. Methods of Land Reclamation Irrigation - Artificial method of supplying water to a region which doest receive adequate rainfall or to ensure continuous crop production. - Done in dry areas with low rainfall and regions experiencing dry periods to sustain growth of crops. - Dams are used to store water. Advantages (a) Can be used for HEP generation (b) For fish farming (c) Supply water for domestic use (d) Control floods. Negative effects a) Can be a cause of deaths by drowning b) Breeding ground for mosquitoes which transmit Malaria. c) breakage can cause destruction of life and property Factors Determining the Amount of Water Required for Irrigation a) Climate: Areas receiving low rainfall require more water. b) Soils: Sandy soils require more water than clays due to low water retention ability. c) Crop: Paddy rice requires water logged soils while vegetables require wet and well drained soils. d) Size of fields: Small plots require small amounts of water while large plots require large amount of water. Methods of Irrigation (a) Water lifting method