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Intro to ENVL Issues Chapter 11 - Coggle Diagram
Intro to ENVL Issues Chapter 11
Soil
90% of land-based food from agriculture
Function
5 forming factors
ClORPT
Composition
25% air
25% water
45% minerals
5% organic matter
10% roots
10% organisms
80% humus
Particles
Silt
Clay
Sand
Textural triangle
Affects workability
Color
Value
Chroma
Hue
Dark=organic
Grey=water table depth
Oxidation state
Orders
Issues
The Dust Bowl
Plants
Require O2
Soil aeration
Water content too high
Roots need to breathe
Require water
Cohesion
Adhesion
Soil fertility
Nutrients
Additions
Losses
Availability affected by pH
Nutrient holding
Mineralization