5.1c Soil system Flashcards
1
Q
What are some “inputs” into the soil system?
A
- Water (precipitation)
- Nutrients
- Organic material (leaf litter)
2
Q
What are some “outputs” into the soil system?
A
- Water (evaporation)
- Soil erosion
- Uptake of minerals by plants
3
Q
What are some “processes” into the soil system?
A
Transfers:
- Percolation (water)
- Leaching (minerals dissolving)
Transformations:
- Evaporation
- Decomposition
- Weathering
- Nutrient cycling
4
Q
What are some “storages” into the soil system?
A
- organic matter
- water
- minerals
- air
- organisms
- nutrients
5
Q
What are some physical conditions that affect plant growth?
A
- Mechanical barriers
- Absence of cracks
- Waterlogging (lack of O2)
- Dryness
- Temperature too high
6
Q
What are some chemical conditions that affect plant growth?
A
- High aluminium due to low pH
- Toxic chemicals
- Low nutrients supply
7
Q
How the soil triangle is used:
A
Soil texture is an important physical characteristic of soil. The soil texture depends on the proportion of the constituent solid particles of different sizes.
