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 ...
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 ...
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.
An artificial barrier constructed across a river or valley, usually for flood control, irrigation, and/or power generation. See also reservoir.
[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 ...
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 ...
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).
A method of irrigation in which entire fields are occasionally deliberately flooded.
A form of irrigation in which water is allowed to flow along the furrows between rows of crops.
A drainage basin or a subdivision of one, such as an aquifer, soil zone, lake, reservoir, or irrigation project.
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.
Surface and subsurface water that leaves a field after irrigation water has been applied, and returns to the normal water cycle.
The discharge of wastewater onto the ground, for treatment or reuse. See also irrigation.
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 ...
Water that is withdrawn from surface or groundwater sources for use at another place, for public water supply, industry, irrigation, livestock, power generation, and other uses.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.
Growing crops or animals under conditions of natural rainfall, without the use of irrigation.
(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.
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.
A method of irrigation that uses mechanical devices that sprinkle water over crops to simulate rain.
A system for classifying streams according to the intended use of the water, such as for recreation or irrigation.