Types of land reclamation

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Types of land reclamation by Mind Map: Types of land reclamation

1. Reclamation of Arid Land

1.1. Mainly reclaimed by irrigation

1.2. Had been practiced in the Middle East for thousands of years

1.3. Imperial Valley on California are one of the examples of areas reclaimed from a near-desert state to a highly productive intensive agriculture.

2. Reclamation Of Salt-Affected Soils

2.1. Process of reclamation: 1) Improve drainage 2) Apply non saline water to the soil surface by irrigation 3) Leaching until sodium in soil is removed

2.2. Soils along coastal areas may have high content of soluble salts that production of economic plants is not possible.

2.3. Soils containing significant amounts of adsorbed sodium are nearly impervious to water and roots.

3. Reclamation Of Swampy Lands

3.1. Reclamation of wetland that unable to do any crop production because of recurrent flooding from adjacent rivers can be done by building levees along the stream.

3.2. Can be reclaimed by drainage which is removed the water from the land more rapidly than removed the water in a natural way.(Drainage)

3.3. Can be done by dig a ditch from swampy area to river, sea, or other natural body of water.

4. Reclamation Of Coastal Areas

4.1. Offshore lands can be reclaimed by construct dikes that parallel to the shoreline, followed by drainage of the area between the dikes and the natural coastline.

4.2. Tidal marshland also can be reclaimed by closing the mouth of tidal estuaries by dikes

5. Reclamation Of Mine Spoils

5.1. After mineral deposits in an area were exhausted, the area becomes unsuitable for development, leading interest to reclaiming the spoil bank area.

5.2. Area can be reclaimed by removed acid constituents of mine spoils through leaching.

5.3. Some states of United States have legislation governing strip mining area to form water retaining benches to hasten the leaching process.

6. Reclamation Of Eroded, Infertile, And “New” Lands

6.1. Usually reclaimed by reforestation accompanied by exclusion of livestock from the area.

6.2. These areas are generally devoid of vegetation, and sediment eroded from them may menace lower-lying lands or water retention structures.