Ren R 441 landscape models of soil formation

catena
- chain of soils
- a series of distinct soils on a slope
- result of pedogenic processes and how they vary as a result of changing slope
- a toposequence?
soil taxa result from operation of a ______________ on the parent sediments

distinctive pedogenic regime
pedogenic regime

hydrological and geological processes occurring on a landscape scale
hydrological processes controlling lower slope soils related to: (3 things)
- magnitude of surface and near-surface flow
- ability to transmit flow
- interaction with groundwater
specific dispersal area
- how much water an area sheds
- *areas that receive a lot of water won't dispense a low*
western canada common salts? cations
- magnesium
- calcium
western canada common salts? anions
- nitrate salts
- sulfate salts
current distribution of pedogenic salts within the landscape correlated with what?

the distribution of soil profiles
spatial variability in long-term soil water balance =

spatial variability in distribution of soils and pedogenic salts
why are carbonates sensitive to pH?

carbonic acid helps dissolve carbonates and leach them down
gypsum
- calcium sulfate
- more soluble than carbonates
buried soils indicate what?

changes in original topography

Author

hcunning

324691

Card Set

Ren R 441 landscape models of soil formation

Description

landscape models of soil formation

Updated

2016-10-18T20:21:31Z

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