Kenmore West High School
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- Unit 12-Soil Resources
DeLair, James
- Earth Science Overview
- Unit 0-Prologue
- Unit 1-Measuring the Earth
- Unit 2-Minerals, Rocks, and Resources
- Unit 3- The Dynamic Crust
- Unit 4- Weathering, Erosion, Deposition, and Landscapes
- Unit 5-Interpreting Earth's History
- Unit 6- Properties of the Atmosphere
- Unit 7-Weather Systems
- Unit 8-The Water Cycle and Climates
- Unit 9-Earth in Space
- Unit 10-Beyond Planet Earth
- Unit 11-Environmental Awareness
- Online Labs
- Castle Learning
- Regents Review
- IB ESS Overview
- Course Outline and Aims:
- Online Resources
- Course Assessment:
- Reading/Research Link
- Unit 1-Historical Overviews
- Unit 2-Environmental Perspectives
- Unit 3-Ecosystems
- Unit 4-Systems Framework
- Unit 5-Biodiversity
- Unit 6-Conservation of Biodiversity
- Unit 7-Global Warming Issues
- Unit 8-Population Dynamics
- Unit 9-Resources-natural capital
- Unit 10-Energy resources
- Unit 11-Water resources
- Unit 12-Soil Resources
- Unit 13-Food resources
- Unit 14-Succession
- Unit 15-Pollution management
- Unit 16-Practical work
- Unit 17-Extended Essay
- Unit 18-Exam Prep
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Unit 12-Soil Resources
Key points:-
The soil system has storages, flows, transfers and transformation as do the other systems.
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Sandy, clay and loam soils have different properties and these affect theri productivity.
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Soils are degraded by human activities incuding irragation, desertification and toxification.
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Soils can be conserved by measures that condition the soil or reduce wind or water erosion.
Key words:soil profile horizon parent material decoposition soil formation weathering soil texture clay loam sandy soil humus leaching aeration nitrification denitrification nitrogen fixation leguminous plants Rhizobium nutrients macronutrients micronutrients soil degradation erosion overgrazing deforestaton unsustainable agriculture toxification irrigation salinization soil conservation -
Last Modified on February 23, 2015