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Types and problems
Presented by-
Shivanand.Aheersang
(2VX15CWM19)
 Soil erosion is the washing or blowing away
(by water or wind) of the top layer of the soil.
 Erosion whether it is by water , wind or
tillage, involve three distinct action- soil
detachment, movement & deposition.
 1. Geological Erosion
 2. Accelerated Erosion
 A) Wind erosion
 B) Water Erosion
 a) rain drop Erosion
 b) rill erosion
 c) gully erosion
 d) bank erosion
 e) Sheet erosion
 f) landslide erosion
 C) land slide erosion

It is a normal process, representing erosion of
land in natural environment. It is caused by
effect of
 Rainfall
 Run-off
 Wind
 Topography
 Atmospheric temperature
Accelerated erosion is due to man made
activities, which have brought about changes in
natural cover and soil condition. The activities
includes
 Land Preparation for raising crops,
 Land use patterns for building houses,
infrastructures, industries, hill cutting,
deforestation, lack of soil conservation and
watershed management.
 The impact of rain drops causes splash
erosion
 Run-off water causes scouring, scraping and
transport of soil particles, leading to sheet,
rill and gully erosion.
 Flood water causes erosion of River Banks
 Water waves cause erosion of bank and sides
of reservoir, lakes and oceans.
 Subsurface seepage water causes soil boiling,
erosion and removal by piping.
 Glacial erosion causes heavy landslide
It is primary responsible for creation and
maintenance of desert areas
 Finer soil particles from top soil along with
organic matter and nutrients are easily
detachable and removed by wind velocity.
 Sheet erosion is the movement of soil from
rain drops splash and runoff water.
 It typically occurs evenly over a uniform slope
and goes unnoticed until most of the
productive topsoil has been lost.
 In general the sheet flow is carried out by
very small definable channels called interrill.
 When the process of soil erosion and
deposition through interrill is prolonged, the
interrills are widened, leading to formation of
small channels called rills.
 Rills are smaller in size and depth,they can be
destroyed by tillage operation.
 If their occurrence is prolonged, rills become
larger in size and can not be destroyed by
tillage operation, and they become Gullies.
 Loss in agricultural production
 Loss of nutrients
 Reduction of infiltration rates
 Increased cost in tillage operation
 Flood may occure in Rivers
 Decreases in useful life of reservoir
 Survival of wild life
 Land degradation
 Cost of removal of sedimentation
 Desertification.
soilerosion-160320075536 (2).pdf

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soilerosion-160320075536 (2).pdf

  • 1. Types and problems Presented by- Shivanand.Aheersang (2VX15CWM19)
  • 2.  Soil erosion is the washing or blowing away (by water or wind) of the top layer of the soil.  Erosion whether it is by water , wind or tillage, involve three distinct action- soil detachment, movement & deposition.
  • 3.  1. Geological Erosion  2. Accelerated Erosion  A) Wind erosion  B) Water Erosion  a) rain drop Erosion  b) rill erosion  c) gully erosion  d) bank erosion  e) Sheet erosion  f) landslide erosion  C) land slide erosion 
  • 4. It is a normal process, representing erosion of land in natural environment. It is caused by effect of  Rainfall  Run-off  Wind  Topography  Atmospheric temperature
  • 5. Accelerated erosion is due to man made activities, which have brought about changes in natural cover and soil condition. The activities includes  Land Preparation for raising crops,  Land use patterns for building houses, infrastructures, industries, hill cutting, deforestation, lack of soil conservation and watershed management.
  • 6.  The impact of rain drops causes splash erosion  Run-off water causes scouring, scraping and transport of soil particles, leading to sheet, rill and gully erosion.  Flood water causes erosion of River Banks  Water waves cause erosion of bank and sides of reservoir, lakes and oceans.  Subsurface seepage water causes soil boiling, erosion and removal by piping.  Glacial erosion causes heavy landslide
  • 7.
  • 8. It is primary responsible for creation and maintenance of desert areas  Finer soil particles from top soil along with organic matter and nutrients are easily detachable and removed by wind velocity.
  • 9.
  • 10.
  • 11.  Sheet erosion is the movement of soil from rain drops splash and runoff water.  It typically occurs evenly over a uniform slope and goes unnoticed until most of the productive topsoil has been lost.
  • 12.
  • 13.  In general the sheet flow is carried out by very small definable channels called interrill.  When the process of soil erosion and deposition through interrill is prolonged, the interrills are widened, leading to formation of small channels called rills.
  • 14.
  • 15.  Rills are smaller in size and depth,they can be destroyed by tillage operation.  If their occurrence is prolonged, rills become larger in size and can not be destroyed by tillage operation, and they become Gullies.
  • 16.
  • 17.
  • 18.
  • 19.  Loss in agricultural production  Loss of nutrients  Reduction of infiltration rates  Increased cost in tillage operation  Flood may occure in Rivers  Decreases in useful life of reservoir  Survival of wild life  Land degradation  Cost of removal of sedimentation  Desertification.