Chapter 6- Aeration And Redox

Question 1

Redox

Answer 1

The electro potential of soils

Question 2

Aeration

Answer 2

Gas exchange of soils

Question 3

What factors control aeration

Answer 3

Temp and acidity

Question 4

Redox 2 processes

Answer 4

Oxidation and reduction

Question 5

What are redox concentrations

Answer 5

Accumulations of Fe oxides

Question 6

Types of redox concentrations

Answer 6

Masses- soft bodies with variable shape
Pore linings- coatings on the pore surface
Nodules- form, irregular in shape and no active

Question 7

Redox depletions

Answer 7

Low chroma

Question 8

What are the 3 characteristics for wetlands

Answer 8

Wetland hydrology
Hydric soils- soils that are wet within Or immediately below A horizon and exhibit redox features
Hydrophytic soils

Question 9

What season is soil surface vs subsurface warmer

Answer 9

Winter- subsurface is warmer than the atmosphere and buffers heat loss
Summer- surface horizons always warmer

Question 10

What’s are good soil management practices

Answer 10

Surface cover: mulch

Moisture control: drainage

Question 11

Do seasonal differences in temp change the deeper you go?

Answer 11

Yes

Question 12

What si thermal conductivity

Answer 12

Heat/cold transferred throw soils by conduction

Question 13

What is a reduced matrix

Answer 13

Overall grey color due to low chroma