What is the formula for soil erosion?
The equation is A = R x K x L x S x C x P and multiplies various factors to arrive at the annual erosion rate. The R factor is based on rainfall and runoff, while K is the soil erodibility factor and depends on the type of soil.
What are the 4 factors that affect the rate of soil erosion?
Vegetation, rainfall, soil, and topography are the primary factors influencing soil erosion, although other factors may be involved. The kinetic impact of rain hitting the soil causes water erosion [5, 6], and water erosion will occur when rainfall exceeds a certain value in a single rainfall event.
What are the 3 factors that affect erosion?
The key climatic characteristics influencing erosion processes in a given territory include atmospheric precipitation, wind, air temperature, air humidity and solar radiation. The factors having a direct effect on soil erosion are atmospheric precipitation (water erosion) and wind (wind erosion).
What are the 6 RUSLE factors?
There are six factors parameter maps were considered in RUSLE; rainfall erosivity factor (R), soil erodibility (K), slope length and steepness (LS), cover management(C) and conservation practice (P).
How do you calculate LS factor?
The equations for calculating LS in the RUSLE are:(1) LS = L ⋅ S (2) L = λ / 22.13 m (3) m = β / 1 + β (4) β = sin θ / 3 ⋅ sin θ 0.8 + 0.56 (5) S = 10.8 ⋅ sin θ + 0.03 θ < 9 % S = 16.8 ⋅ sin θ − 0.5 θ ≥ 9 % where λ is the slope length (m), m is a variable length-slope exponent, β is a factor that varies with slope …
Which is not factor of erosion?
Thus, the correct answer is ‘Deforestation.
What two factors affect the rate of soil erosion?
The severity of corrosion that can be caused by a particular soil type is dependent on a variety of factors, including the soil’s chemical properties, environmental conditions and the properties of the metal in contact with the soil.
What is K value in soil?
K factor is soil erodibility factor which represents both susceptibility of soil to erosion and the rate of runoff, as measured under the standard unit plot condition. Soils high in clay have low K values, about 0.05 to 0.15, because they resistant to detachment.
What is topographic factor LS?
Topography: LS-Factor The combined LS-factor describes the effect of topography on soil erosion. The European Soil Data Centre (ESDAC) developed a new pan-European high-resolution soil erosion assessment to achieve a better understanding of the spatial and temporal patterns of soil erosion in Europe.
What is USLE used for?
The USLE can be used to compare soil losses from a particular field with a specific crop and management system to “tolerable soil loss” rates. Alternative management and crop systems may also be evaluated to determine the adequacy of conservation measures in farm planning.
What is soil erosion What are its factors?
Soil erosion is a naturally occurring process that affects all landforms. In agriculture, soil erosion refers to the wearing away of a field’s topsoil by the natural physical forces of water (Figure 1) and wind (Figure 2) or through forces associated with farming activities such as tillage.
What are two physical factors that affect erosion?
The factors that influence erosion are:
- The amount and intensity of rainfall and wind velocity.
- The amount and intensity of rainfall and wind velocity: Rainfall is the most forceful factor causing erosion through splash and excessive run off.
What are the factors affecting rate of corrosion?
Introduction. There are several factors influencing the rate of corrosion including diffusion, temperature, conductivity, type of ions, pH value and electrochemical potential.