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Questions and Answers
Who is credited with organizing soils into groups with similar observable properties based on broad climatic zone?
Who is credited with organizing soils into groups with similar observable properties based on broad climatic zone?
What is the formal term for the system of classification developed by the USDA Soil Survey?
What is the formal term for the system of classification developed by the USDA Soil Survey?
What is the basic sampling unit used in soil surveys?
What is the basic sampling unit used in soil surveys?
What is an essential soil individual, comprising an identifiable series of soils in an area?
What is an essential soil individual, comprising an identifiable series of soils in an area?
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What is the smallest volume that can be called a soil?
What is the smallest volume that can be called a soil?
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Which category in soil taxonomy is the most detailed?
Which category in soil taxonomy is the most detailed?
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What is the purpose of Soil Taxonomy?
What is the purpose of Soil Taxonomy?
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Which soil order is found in arid regions of the world?
Which soil order is found in arid regions of the world?
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Which soil type exhibits only ephemeral soil development and is largely confined to the surface horizon?
Which soil type exhibits only ephemeral soil development and is largely confined to the surface horizon?
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What distinguishes Histosols from other soil types?
What distinguishes Histosols from other soil types?
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Which soil type is known for having high clay content and large shrink-swell potential?
Which soil type is known for having high clay content and large shrink-swell potential?
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What distinguishes Andisols from other soil types?
What distinguishes Andisols from other soil types?
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Which soil type is characterized by thick, dark, soft surface and high base saturation?
Which soil type is characterized by thick, dark, soft surface and high base saturation?
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What defines Ultisols compared to Alfisols?
What defines Ultisols compared to Alfisols?
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What characterizes Spodosols?
What characterizes Spodosols?
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Study Notes
Soil Classification and Taxonomy
- Konstantin Dmitrievich Glinka is credited with organizing soils into groups with similar observable properties based on broad climatic zones.
USDA Soil Survey
- The formal term for the system of classification developed by the USDA Soil Survey is Soil Taxonomy.
Soil Surveys
- The basic sampling unit used in soil surveys is the Pedon.
Soil Individuals
- A Polypedon is an essential soil individual, comprising an identifiable series of soils in an area.
Soil Units
- The smallest volume that can be called a soil is a Pedon.
Soil Taxonomy Categories
- The Order category is the most detailed in Soil Taxonomy.
Purpose of Soil Taxonomy
- The purpose of Soil Taxonomy is to provide a standardized system for communicating and understanding soils.
Soil Orders
- Aridisols are a soil order found in arid regions of the world.
- Entisols exhibit only ephemeral soil development and are largely confined to the surface horizon.
Histosols
- What distinguishes Histosols from other soil types is their high organic matter content.
Clay-Rich Soils
- Vertisols are known for having high clay content and large shrink-swell potential.
Andisols
- What distinguishes Andisols from other soil types is their high content of volcanic glass and minerals.
Mollisols
- Mollisols are characterized by a thick, dark, soft surface and high base saturation.
Ultisols and Alfisols
- Ultisols are defined by their lower base saturation compared to Alfisols.
Spodosols
- Spodosols are characterized by a subsurface horizon with high concentrations of aluminum and iron oxides.
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Description
Test your knowledge of soil survey, classification, and land-use principles, including soil taxonomy and the history of soil classification. This quiz is based on Chapter 6 of the Soil Science 01 course for USM-CA Students (1 BSA-A) and covers laboratory activities in soil profiling.
