The following are factors that can degrade the land to the point it becomes unusable or not productive
- Land may be damaged due to natural hazards like fire
- Human activities can also damage the land i.e. poor farming methods, mining and pollution.
- Cares of water logged land for example swamps and marshes
Methods of reclaiming the land/Land reclamation techniques
- A forestation or reforestation [planting trees]
- Tsetse fly control which is done by clearing, spraying the area in order to kill them
- Irrigation which is practiced where the natural precipitation is not sufficient to meet the crop moisture requirements
- Draining water using canals and pumps can reclaim or constructing embankments for water-logged land /marshy areas or wetlands
- Planting reeds so as to allow water absorption by plants so as to dry the areas for cultivation.
- Planting grass cover to check erosion
- Burning reeds so as to clear the area for cultivation and settlement
PURPOSES OF RECLAIMING THE LAND
- To increase availability of arable land for cultivation.
- To expand carrying capacity of land. This means that the land can be used for industrial areas as well as residential areas.
- For road and railway construction.
- To control floods caused by water from the sea. The best example of land reclamation in the world is the Zuider Zee land reclamation scheme in Holland (Netherlands).