Define soil erosion. soil erosion synonyms, soil erosion pronunciation, soil erosion translation, English dictionary definition of soil erosion. Noun 1. soil erosion. 'Soil Erosion'. Definition of Soil Erosion. 'Soil erosion is the wearing away of the land surface by physical forces such as rainfall, flowing water. Soil erosion occurs when soil is removed through the action of wind and Soil. The soil covering the surface of the earth has taken millions of years to form and.


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Water running downhill cuts soil erosion definition channel deep into the soil and where there is a sudden fall, a gully head forms at the lower end of the channel and gradually works its way back uphill.

Soil erosion definition | Biodiversity A-Z

Soil erosion definition it does so, it deepens and widens the scar that the gully makes in the hillside. Gully erosion is related to streambank erosion, in which fast-flowing rivers and streams increasingly cut down their own banks.

Rill erosion channel erosion Channel erosion can occur on steep land or soil erosion definition land that slopes more gently.

Because there are always irregularities in a field, water finds hollows in which to settle and low-lying channels through which to run.

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As the soil from these channels is washed away, channels or miniature dongas are formed in the field. Wind erosion Wind erosion occurs when the soil erosion definition surface is left bare in regions that are arid enough, as a result of low rainfall, to allow the soil to dry out, and flat enough to allow the wind to carry the soil away over several consecutive soil erosion definition.

Land may become susceptible to wind erosion through grazing animals, which remove the protective plant cover, and whose hooves break up the soil, especially round watering points. Arable land that has been left bare is also a major problem. Factors determining soil erosion There are various factors determining soil erodibility of which the following are the most important: More detailed explanations are provided for a number of key terms, to provide further background information.

Thus, if rainfall amounts and intensities increase in many parts of the world as expected, erosion will also increase, unless amelioration measures are taken.

Soil erosion - Wikipedia

Soil erosion rates are expected to change in response to changes in climate soil erosion definition a variety of reasons. The most direct is the change in the erosive power of rainfall. During the 17th and 18th centuries, Easter Island experienced severe erosion due to deforestation and unsustainable agricultural practices.

The resulting loss of topsoil ultimately led to ecological collapse, causing mass starvation and the complete disintegration of the Easter Island civilization.

The results soil erosion definition an extensive global data collection effort produced the Global Rainfall Erosivity Database GloREDa which includes rainfall erosivity for 3, stations and covers 63 countries.

Soil erosion - definition of soil erosion by The Free Dictionary

According to a new study [66] published in Nature Communications, almost 36 billion tons of soil is lost every year due to water, and deforestation and other changes in land use make the problem worse.

The study investigates global soil erosion dynamics by means soil erosion definition high-resolution spatially distributed modelling ca.

The geo-statistical approach allows, for the first time, the thorough incorporation into a global soil erosion model of land use and changes in land use, the extent, types, spatial distribution of global croplands and the effects of different regional cropping systems.

The loss of soil fertility due to erosion is further problematic because the response is often to apply chemical fertilizers, which leads to further water and soil pollution, rather than to soil erosion definition the land to regenerate.


Soil erosion definition sediments themselves act as pollutants, as well as being carriers for other pollutants, such as attached pesticide molecules or heavy metals. Silt can smother the spawning beds of fish, by filling in the space between gravel on the stream bed.


It also reduces their food supply, and causes major respiratory issues for them as sediment enters their gills. The biodiversity of aquatic plant soil erosion definition algal life is reduced, and invertebrates are also unable to survive and reproduce. While the sedimentation event itself might be relatively short-lived, the ecological disruption caused by the mass die off often persists long into the future.

From the Yellow Riversoil erosion definition 1.

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