The flashcards below were created by user
hcunning
on FreezingBlue Flashcards.
-
main characteristics
- well to imperfectly drainedÂ
- no diagnostic horizon - not developed enough
- lack of a B horizon (or less than 5cm)
-
colluvium
material that accumulates at the foot of a steep slope
-
distribution in canada
- no specific zonation
- erosional and depositional portions of landscapes
-
-
regosol GG
Ah or Ap horizon < 10cm thick
-
humic regosol GG
Ah horizon >10cm thick
-
subgroups
- orthic
- cumulic
- gleyed
- gleyed cumulic
-
soils with _________ of pedogenic properties
juvenile expression
-
6 factors of water erosion
- rainfall
- runoff
- soil erodibility
- slope gradient and curvature
- vegetation cover
- tillage
-
4 types of water erosion
- sheet erosion
- rill erosion
- gully erosion
- bank erosion
-
what does wind erosion depend on?
soil particle size and wind strength
-
rate and magnitude of wind erosion depends on:
- soil erodibility
- surface roughness
- climate
- windbreaks
- vegetation cover
-
tillage erosion
redistribution of soil through the action of tillage and gravity
-
management of regosols: if tillage is required consider the following
- equipment
- direction
- speed and depth
- number of passes
-
management of regosols: reclaiming highly erodible soils
- cover exposed soil
- avoid excavation
- use tackifiers to prevent erosion
-
management of regosols: low nutrient status
- amendments like compost, fertilizers, pulp sludge
- pulp sludge: high organic N content
-
management of regosols: low water holding capacity
increase OM from amendments and vegetation that binds soil, contributes carbon and nutrients
-
vegetation fascines
- poplar or aspen cuttings placed in shallow trenches
- slows water flow, catches litter and will eventually root
- prevents depositional fan
|
|