Geo-Political Issues (Land Reclamation): Afforestation, Construction of Barriers, Sand Filling, Construction of Drainage and Control of Erosion

 

Welcome to class! 

In today’s class, we will be talking about geo-political issues (land reclamation): afforestation, construction of barriers, etc. Enjoy the class!

Geo-Political Issues (Land Reclamation)

Geo-Political Issues (Land Reclamation) | classnotes.ng

Land reclamation also known as landfill. It is the process of creating new land from the ocean, riverbeds, or lake beds. The land reclaimed is known as reclamation ground or landfill.

The term “reclamation” also refers to returning disturbed land to an improved state. It is the process of reconverting disturbed land to its former or other productive uses. This can also be referred to as land rehabilitation.

Methods of Land Reclamation

  1. Afforestation
  2. Sand Filling
  3. Construction of Drainage
  4. Control of Erosion
  5. Construction of Barriers

Land reclamation can be achieved with several different methods. The simplest method involves filling the area with large amounts of heavy rock and cement, then filling it with clay and dirt until the desired height is reached. The process is called “infilling” and the material used to fill the space is generically called “infill”.

Also, draining of submerged wetlands is often used to reclaim land for agricultural use.

A related practice is the draining of swampy or seasonally submerged wetland to convert them to farmland. While this does not create new land exactly, it allows commercially productive use of land that would otherwise be restricted to wildlife habitat. It is also an important method of mosquito control.

Disadvantages of Land Reclamation
  1. It leads to the loss of some organisms and plants due to the destruction of their habitat.
  2. It changes the drainage pattern.
  3. It leads to subsidence of the land.
  4. It can also lead to flooding.
  5. It makes the land prone to soil liquefaction, especially during an earthquake.
General evaluation
  1. What is land reclamation?
  2. How can land be reclaimed?
  3. State the advantages of land reclamation.
  4. Mention the disadvantages of reclamation.
  5. Explain afforestation.

 

In our next class, we will be talking about GIS (Geographic Information System).  We hope you enjoyed the class.

Should you have any further question, feel free to ask in the comment section below and trust us to respond as soon as possible.

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