Course Summary
Unit 1 - Introduction
Introduction to the causes and consequences of soil degradation. Definition of soil degradation. Some Australian and global examples.
Unit 2 - The Formation Of Soil Material
Definition of soil. How soil is formed from the breakdown of rocks and minerals.
Unit 3 - Bioturbation
The disturbance of soils by fauna and flora (bioturbation). Explanation of the soil profile and soil horizons.
Unit 4 - Lateral Surface Movement
The movement of the Earth's surface by water, wind and ice. Topsoil formation. Texture contrast soil and fabric contrast soil.
Unit 5 - The Distribution Of Soil Materials
How soil material is distributed globally. Factors determining soil distribution.
Unit 6 - Soil Degradation
The main types of soil degradation are discussed: soil erosion, structural change, pollution, desertification and salinisation.
Unit 7 - The Practical Framework
How soil scientists gather information. Soil description, soil survey and mapping techniques.
Unit 8 - Soil Management
Some land management systems are examined: soil fertility management, conservation farming, agroforestry, and precision agriculture. Some regional and global strategies for land rehabilitation are discussed.