Concept
Irrigation
Related concepts (43)
Chain pump
The chain pump is type of a water pump in which several circular discs are positioned on an endless chain. One part of the chain dips into the water, and the chain runs through a tube, slightly bigger than the diameter of the discs. As the chain is drawn up the tube, water becomes trapped between the discs and is lifted to and discharged at the top. Chain pumps were used for centuries in the ancient Middle East, Europe, and China. The earliest evidence for this device is in a Babylonian text from about 700 B.
Saqiyah
A sāqiyah or saqiya (ساقية), also spelled sakia or saqia) is a mechanical water lifting device. It is also called a Persian wheel, tablia, rehat, and in Latin tympanum. It is similar in function to a scoop wheel, which uses buckets, jars, or scoops fastened either directly to a vertical wheel, or to an endless belt activated by such a wheel. The vertical wheel is itself attached by a drive shaft to a horizontal wheel, which is traditionally set in motion by animal power (oxen, donkeys, etc.
Noria
A noria (ناعورة, nā‘ūra, plural نواعير nawāʿīr, from ܢܥܘܪܐ, nā‘orā, lit. "growler") is a hydropowered scoop wheel used to lift water into a small aqueduct, either for the purpose of irrigation or to supply water to cities and villages. The English word noria is derived via Spanish noria from Arabic nā‘ūra (ناعورة), which comes from the Arabic verb meaning to "groan" or "grunt", in reference to the sound it made when turning. The term noria is commonly used for devices which use the power of moving water to turn the wheel.
Food and Agriculture Organization Corporate Statistical Database
The Food and Agriculture Organization Corporate Statistical Database (FAOSTAT) website disseminates statistical data collected and maintained by the Food and Agriculture Organization (FAO). FAOSTAT data are provided as a time-series from 1961 in most domains for 245 countries in English, Spanish and French. FAOSTAT is maintained by the Statistics Division of the Food and Agriculture Organization of the United Nations.
Soil acidification
Soil acidification is the buildup of hydrogen cations, which reduces the soil pH. Chemically, this happens when a proton donor gets added to the soil. The donor can be an acid, such as nitric acid, sulfuric acid, or carbonic acid. It can also be a compound such as aluminium sulfate, which reacts in the soil to release protons. Acidification also occurs when base cations such as calcium, magnesium, potassium and sodium are leached from the soil. Soil acidification naturally occurs as lichens and algae begin to break down rock surfaces.
Water right
Water right in water law is the right of a user to use water from a water source, e.g., a river, stream, pond or source of groundwater. In areas with plentiful water and few users, such systems are generally not complicated or contentious. In other areas, especially arid areas where irrigation is practiced, such systems are often the source of conflict, both legal and physical. Some systems treat surface water and ground water in the same manner, while others use different principles for each.
Turpan water system
The Turpan water system or Turfan karez system kariz) in Turpan, located in the Turpan Depression, Xinjiang, China, is a vertical tunnel system adapted by the Uyghur people. The word karez means "well" in the local Uyghur language. Turpan has the Turpan Karez Paradise museum (a Protected Area of the People's Republic of China) dedicated to demonstrating its karez water system, as well as exhibiting other historical artifacts.
Solenoid valve
A solenoid valve is an electromechanically operated valve. Solenoid valves differ in the characteristics of the electric current they use, the strength of the magnetic field they generate, the mechanism they use to regulate the fluid, and the type and characteristics of fluid they control. The mechanism varies from linear action, plunger-type actuators to pivoted-armature actuators and rocker actuators. The valve can use a two-port design to regulate a flow or use a three or more port design to switch flows between ports.
Hohokam
Hohokam (hoʊhoʊˈkɑːm) was a culture in the North American Southwest in what is now part of Arizona, United States, and Sonora, Mexico. It existed between 300 and 1500 CE, with cultural precursors possibly as early as 300 BCE. Archaeologists disagree about whether communities that practiced the culture were related or politically united. According to local oral tradition, Hohokam societies may be the ancestors of the historic Akimel and Tohono Oʼodham in Southern Arizona. The origin of the culture is debated.
Public works
Public works are a broad category of infrastructure projects, financed and procured by a government body for recreational, employment, and health and safety uses in the greater community. They include public buildings (municipal buildings, schools, and hospitals), transport infrastructure (roads, railroads, bridges, pipelines, canals, ports, and airports), public spaces (public squares, parks, and beaches), public services (water supply and treatment, sewage treatment, electrical grid, and dams), and other, usually long-term, physical assets and facilities.