soil salinization definition ap human geography

(2006). Level. The Nile River flows over 6,600 kilometers (4,100 miles) until emptying into the Mediterranean Sea. Salinity reduces water availability for plant use. Measuring salinity and sodicity of soil and water samples in the laboratory: It is more accurate and results in a better picture of the status salt-affected soils, but it is only cost-effective when analysing small areas or few samples, as the procedures are time consuming and relatively expensive. Sometimes irrigation water can be used up, so it is important to consider conservation options. (3,000 - 6,000 ppm salt results in trouble for most cultivated plants.) retry. Geography. Not surprisingly, economic geographers use economic reasons to explain the location of economic activities. Salts occur naturally within soils and water. The deserts are very fertile, which means that, if provided with water, they can grow a lot of food. The increased salinity of soil overall stunts plant growth because it reduces the rate and amount of water that the plant roots can take up from the soil. -3-2. Link to this page: What’s Soil Salinization. Today, the river continues to serve as a source of irrigation, as well as an important transportation and trade route. It becomes an environmental problem when it occurs as a result of human activity, denuding once vegetated areas of all plant life. 10 Development Don't know. shuffle. Salt buildup is a problem in irrigated farmland in the U.S. because if the area is poorly dressed or poorly flushed out of salts then buildup of salts will occur causing salinity levels to increase, decreasing the production of crops because the plants get less water. Soil holds nutrient and water for plants and animals; water is filtered and cleansed as it flow through soils; and soils affect the chemistry of water and the amount of water that returns to the atmosphere to form rain. Salination can be caused by natural processes such as mineral weathering or by the gradual withdrawal of an ocean. Salinization refers to the salt content of the level affecting agricultural and environmental health. Managing secondary dryland salinity: Options and challenges. Salt also destroys the soil structure, so water cannot easily flow through it, which can cause plants to die from being waterlogged. Dryland Salinity and Ecosystem Distress Syndrome: Human Health Implications. Home Embed All AP Human Geography Resources . The soil may contain adequate water, but plant roots are unable to absorb the water due tounfavorable osmotic pressure. The process of soil salinization is most likely to occur in areas where there is. The term used to describe a man-made system whereby water is spread from its natural source (such as a lake or river) over a much larger geographic range to aid in agricultural production is “irrigation.” In this view, soil erosion has severely threatened the productivity of fertile cropping areas as they are continually degraded. (Noun) damage to the productive capacity because of agricultural practices such as the excessive use of pesticides or fertilizers, soil compaction from heavy equipment, or erosion of topsoil,eventually resulting in reduced agricultural products. Soil salinization rarely occurs naturally. 4 Diagnostic Tests 225 Practice Tests Question of the Day Flashcards Learn by Concept. Agricultural Water Management, 80(1-3), 41-56. Definition. The second effect of salinity is shown when excessive amounts of salt enter the plant in the transpiration str… AP Human Geography Barron's Ch.7 Vocab. Over time this causes the land … Salinization refers to a build up of salts in soil, eventually to toxic levels for plants. Pause. J.C.F. fix. Salinization may occur naturally or because of conditions resulting from management practices. This can by done by providing water with irrigation technology. Soil salinization is one of the most vital soil problems for agricultural production. 14: 6109577175: Shifting Cultivation AP Human Geography Course and Exam Description Course Framework V.1 ... desertification, soil salinization, and conservation efforts. Soil salinization usually occurs in arid areas, In these areas, soluble salt ions accumulate in the soil. Pannell, D.J., & Ewing, M.A. Total Cards. Example Question #901 : Ap Human Geography The physical, social, and economic access to safe and nutritious food sources sufficient enough to meet the dietary needs and food preferences for an active and healthy life is termed __________ . “Salinization” occurs when soil in an arid climate has been made available for agricultural production using irrigation. This natural process can be greatly accelerated by human activities that remove vegetation from soil. 52. Subject. Infant mortality varies widely around the world and is affected by complex real-world characteristics. Polar Desert Zone. Plants are generallymost sensitive to salinity during germination and early growth. Soil salinity is the salt content in the soil; the process of increasing the salt content is known as salinization. Agriculture and Rural Geography. High salt levels hinder water absorption, inducing physiologicaldrought in the plant. remaining cards. Desert pavement is usually present where there is an abundance of gravel in the substrate. NEED ALL There is a soil-forming process, typical of the humid tropics, that includes rapid weathering of the parent material, leaching of silica, and a concentration of iron and aluminum oxides. accumulate in the soil. restart. CREATE AN ACCOUNT Create Tests & Flashcards. ... salinization. Any process that affects the soil-water balance may affect the Tedrow, in Encyclopedia of Soils in the Environment, 2005. Victorian Department of Environment and Primary Industry (2014) Irrigation Salinity. Soil erosion eats away the top soil which is the fertile layer of the land and also the component that supports the soil’s essential microorganisms and organic matter. Each year more than 1.5 million hectares (3.7 million acres) of once-arable land becomes unproductive from salinization, leading to an $11 billion loss in the world food market. 2019 AP ® HUMAN GEOGRAPHY FREE-RESPONSE QUESTIONS GO ON TO THE NEXT PAGE. Soil is a natural resource and deeply affects every other part of the ecosystem. Know. The infant mortality rate is a key demographic indicator that can be used to assess social, economic, and other conditions at multiple geographic scales. Salinization is a resource concern because excess salts hinder the growth of crops by limiting their ability to take up water. 2. Desalinization can be achieved by means of evaporation, freezing, reverse osmosis, ion exchange, … auto play. Description. AP HUMAN GEOGRAPHY UNIT 5: Agriculture Name: Taylor Eads Vocabulary Vocabulary 1. The solutions eventual evaporation will lead to salt residue remaining in the soil. Salt in soils decreases the osmotic potential of the soil so that plants can't take up water from it. [ dē-săl′ə-nÄ­-zā ′shən ] The removal of salt or other chemicals from something, such as seawater or soil. This is referred to as the osmotic or water-deficit effect of salinity. View Unit 5 Vocab.docx from GEOGRAPHIC 150 at Forsyth Technical Community College. Save. Maximum Polar Desert soil development is usually confined to open-textured material underlain by a dry permafrost. Soil salinization is a process in which water-soluble salts build up in the root zones of plants, blocking the movement of water and nutrients into plant tissues. 0:01 apps. Soil-Net.com - a soils educational portal developed by the National Soil Resources Institute (NSRI), the largest UK national and international centre for research and development, consultancy and training in soils and their interaction with the atmosphere, land use, geology and water resources. occurs when water-soluble salts accumulate in the soil to a level that impacts on agricultural production Soil salinization can be cleaned through flushing soil, temporarily stopping crop growth, and installing underground drainage systems (Miller, G. & Spoolman, S.). SOIL Soil is a thin layer on top of earth’s land surface. It is a concern, as it can limit or prevent the growth of crops. EcoHealth 4(1), 10 – 19. The water evaporates quickly off the newly irrigated land, leaving residues of salt lying in the earth. the process by which a nonsaline soil becomes saline, as by the irrigation of land with brackish water. export. show Definition first. help. For thousands of years, the river has provided a source of irrigation to transform the dry area around it into lush agricultural land. Soil salinization is a serious and difficult to reverse form of soil degradation. edit. Agricultural Decision Making One of economic geography's primary goals is to explain or make sense of the land-use patterns we see on Earth's surface. AP Human Geography Chapter 10 Practice MCQ Exam: Agriculture (AP Exam) Why is the traditional classification of agriculture as a primary economic activity a problem when considering the geography of agriculture? Salinization is the process of accumulating water-soluble salts in the soil. Speak. Slower Faster. Study concepts, example questions & explanations for AP Human Geography. Irrigating in a dry climate, especially flood irrigation can … Polar Desert soils (Haploturbels) generally form on positive relief elements and on sandy/gravelly plains. Salinity is either expressed in grams of salt per kilogram of water, or in parts per thousand (ppt, or ‰). Search » All » Geography » AP Human Geography » CH. Example Questions. As the human population … print. Soil Erosion: Movement of soil components, especially topsoil, from one place to another, usually by wind, flowing water, or both. Salinization occurs when dissolved salts in water tables rise to the soil surface and accumulate as water evaporates. IMP-5.A.2: Agricultural practices—including slash and burn, terraces, irrigation, deforestation, draining wetlands, shifting cultivation, and The Central Valley in California produces 250 types of fruits and vegetables, and does so with river water, aquifers, and streams. Often rise in a water table is due to the replacement of deep-rooted vegetation, such as trees, with shallower rooted vegetation, such as grasses. 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