Question

List four common methods by which countries can increase their supply of land.

Answer 1

Answer:

Land reclamation, usually known as reclamation, and also known as land fill (not to be confused with a landfill), is the process of creating new land from oceans, seas, riverbeds or lake beds. The land reclaimed is known as reclamation ground or land fill.

Reclaiming in Perth, Australia 1964

In some jurisdictions, including parts of the United States,[1] the term "reclamation" can refer to returning disturbed lands to an improved state. In Alberta, Canada, for example, reclamation is defined by the provincial government as "The process of reconverting disturbed land to its former or other productive uses."[2] In Oceania it is frequently referred to as land rehabilitation.

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Methods Edit

Land reclamation can be achieved with a number of different methods. The simplest method involves filling the area with large amounts of heavy rock and/or cement, then filling with clay and dirt until the desired height is reached. The process is called "infilling"[3] and the material used to fill the space is generally called "infill".[4][5] Draining of submerged wetlands is often used to reclaim land for agricultural use. Deep cement mixing is used typically in situations in which the material displaced by either dredging or draining may be contaminated and hence needs to be contained. Land dredging is also another method of land reclamation. It is the removal of sediments and debris from the bottom of a body of water. It is commonly used for maintaining reclaimed land masses as sedimentation, a natural process, fills channels and harbors naturally.[6]

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