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Desert crust decreases the infiltration rate of soils, thereby increasing runoff and soil erosion, reducing the availability of water to the root zone, and impeding seedling and plant growth.
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They can leave behind loose, gravelly material in the dry “river” bed, or carve a deep groove in baked, compacted soils. Eventually, runoff scours the lowest lying areas, creating dry beds of loose, sandy soil known as “desert washes.” They form regularly on slopes in parallel, and carry the runoff to flatter ground.
Jun 28, 2018 · At a certain depth below the land surface, the spaces between the soil and rock particles can be totally filled with water, resulting in an aquifer from which groundwater can be pumped and used by people.
The dominant form of runoff in humid regions is throughflow, i.e. lateral flow of water which has infiltrated the upper soil layers. In dryland regions, overland flow (lateral surface flow of water directly intercepted from rainfall) is dominant because soils and mantles are too thin to maintain throughflow and the water table is generally too ...
Stormwater runoff from surrounding landscapes carries particles into streams. The particles include soil as well as plant and animal detritus.
Dec 14, 2020 · The model, called HYDRUS-1D, simulates how water redistributes in a sandy desert soil based on precipitation and evaporation data.
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Water storage dynamics and flow facilitate the four basic soil forming processes: translocations, transformations, additions and losses of soil constituents in a soil profile.
