Introduction to Soils and Soil Resources
Soil Air and Soil Organic Matter

Table of Contents

Soil Air and Soil Organic Matter

Gas Concentrations

Oxidation

Reduction

Oxidation State

Oxidation State

Examples

The atmosphere

Atmoshere profile

Radiation budget

Greenhouse gases

Gas Concentrations

Mineral/water

Atmopheric air vs Soil Air

Soil Atmosphere

Aerobic Respiration

Anaerobic Respiration

PPT Slide

Soil temperature

Oxygen levels at soil surface

Particle size

Gas Conc. (% vol.): Corn field

Gas Conc. (% vol.): Feedlot

Gas Dynamics

Soil Organic Matter

Soil: Major components

Soil Organic Matter

Soil Organic Matter

Soil profile

Physical Properties

Soil C

OM Impacts

Pores and particles in soil

Porosity/Structure

humic acid

Impact of soil pH

Charge Characteristics

Application

Soils & the Global C cycle

Organic carbon

Organic carbon - Prairies

Organic carbon - Cdn Soils

Ecozones of Canada

A Catena

Global Carbon Cycle: Units

Global Carbon Cycle

Global Carbon Cycle: Pools

Global Carbon Cycle

Global Carbon Cycle: Fluxes (Pg/yr)

Global Carbon Cycle

Atmosheric CO2 concentration trends

Breton Plots

Wheat Residue Composition (g/kg)

Decomposition Rates

Controls on Decomposition Rates

Processes

Soil Profile

Decomposition Sequence

Decomposition Kinetics

Amount of Decomposition

Simulation Models

Linking the C Cycle to Nutrient Cycling

Needs of Organisms

Decomposition & Mineralization of N

Decomposition & Immobilization of N

Carbon and Nutrient Cycling

Tramin Model Demonstration

Ecosystem Processes

Humic Substances

Properties of Humic Substances

Fate of 100 g of Crop Residues

Factors Affecting SOM

Factors Affecting SOM

Factors Affecting SOM

Factors Affecting SOM

Cropping, Tillage & Fertilization

Next Week

Email: ecolson@ualberta.ca

Home Page: http://www.environment.ualberta.ca/SoilsERM/lectures/index.html

Other information:

Lecture 7 - Soil Air and Soil Organic Matter

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