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irrigation

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Agriculture and Agricultural Land

Agriculture and Agricultural Land  

The use of land for the production of food, fiber, and fuel is the principal driver of land use and land cover change and, therefore, a key forcing function of ...
Aral Sea

Aral Sea  

A very large freshwaterlake (formerly the world's fourth largest lake) on the border between Kazakhstan and Uzbekistan in Central Asia. Since the 1960s the lake has been drying up and shrinking as a ...
arid region

arid region  

An area with a dry climate which cannot support the growth of trees, woody plants, or most crops (without irrigation), and with a biome in which only drought‐resistant vegetation naturally survives.
dam

dam  

An artificial barrier constructed across a river or valley, usually for flood control, irrigation, and/or power generation. See also reservoir.
Depletion and Restoration of The Ogallala Aquifer

Depletion and Restoration of The Ogallala Aquifer  

[This case study focuses on the history of this crucial supply of ground water and on the increasing risk and consequences of its depletion.]The Ogallala Aquifer, the dominant geologic ...
drip irrigation

drip irrigation  

A form of irrigation that uses a perforated pipe to deliver water one drop at a time directly to the soil around each plant, in order to eliminate runoff and soil erosion. Also known as trickle ...
dry farming

dry farming  

A method of farming in arid and semi‐arid areas without using irrigation, which relies on treating the land in ways that conserve moisture (including using a mulch).
flood irrigation

flood irrigation  

A method of irrigation in which entire fields are occasionally deliberately flooded.
furrow irrigation

furrow irrigation  

A form of irrigation in which water is allowed to flow along the furrows between rows of crops.
hydrological unit

hydrological unit  

A drainage basin or a subdivision of one, such as an aquifer, soil zone, lake, reservoir, or irrigation project.
Irrigation

Irrigation   Reference library

Encyclopedia of Global Change

Reference type:
Subject Reference
Current Version:
2005
Subject:
Science and technology, Environmental Science, Social sciences, Environment
Length:
3,463 words
Illustration(s):
1

Irrigation is any human-induced change in the natural flow of water for the purpose of growing plants. This includes water

Irrigation

Irrigation   Reference library

The Oxford Companion to Global Change

Reference type:
Subject Reference
Current Version:
2009

Irrigation is any human-induced change in the natural flow of water for the purpose of growing plants. This includes water

irrigation efficiency

irrigation efficiency  

The amount of water that is stored in the crop root zone of a soil, compared with the amount of irrigation water that has been applied.
irrigation return flow

irrigation return flow  

Surface and subsurface water that leaves a field after irrigation water has been applied, and returns to the normal water cycle.
land application

land application  

The discharge of wastewater onto the ground, for treatment or reuse. See also irrigation.
land Reclamation

land Reclamation  

As distinct from land clearance, brought under cultivation previously unfarmed land by remedying major deficiencies in the soil's natural structure, drainage, or fertility. Land clearance achieved ...
offstream use

offstream use  

Water that is withdrawn from surface or groundwater sources for use at another place, for public water supply, industry, irrigation, livestock, power generation, and other uses. Contrast instream use.
rainfed farming

rainfed farming  

Growing crops or animals under conditions of natural rainfall, without the use of irrigation.
salinization

salinization  

(US salination)The process of accumulating soluble salts in soil, usually by an upward capillary movement from a saline groundwater source, followed by evaporation from the surface.
soil salinization

soil salinization  

A soil that has become damaged by large quantities of salts, usually from poor quality irrigation water, under conditions of poor or impaired drainage. See also salinization.

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