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- These layers are assigned distinctive alphabetic symbols as a form of shorthand for their characteristics. The horizon description system begins by splitting soil horizons into two distinct groups: organic and mineral horizons. Organic horizons are those that contain 17% or more organic carbon; mineral horizons have less than 17% organic carbon.
soilsofcanada.ca/soil-formation/horizons.php
The horizon description system begins by splitting soil horizons into two distinct groups: organic and mineral horizons. Organic horizons are those that contain 17% or more organic carbon; mineral horizons have less than 17% organic carbon.
- Factors
Hans Jenny suggested a slightly different way of considering...
- Processes
The differentiation of the horizons within the soil profile...
- Soil Formation
Soil formation (also termed soil genesis or pedogenesis) is...
- Gleysolic
Gleysolic soils result from prolonged water saturation of...
- Links
The intent for the Field Handbook for the Soils of Western...
- Members
Angela Bedard-Haughn, University of Saskatchewan, Committee...
- Chernozemic
The A horizons (Ah, Ahe, Ahk, Ap, Apk) meet the criteria for...
- Glossary
Vertic horizon: A horizon affected by argillipedoturbation,...
- Factors
- Canadian Shield
- Mountains and Islands
- Prairies
The landscape of this profile extends from Newfoundland on the east coast of Canada, to the majority of Ontario and Manitoba, to northern portions of Saskatchewan and Alberta, to much of the Northwest Territories and Nunavut. 1. In the past, the Canadian interior was covered with massive glaciers. About 15,000 years ago these glaciers receded north...
This profile covers all of British Columbia and the Yukon as well as parts of the Northwest territories and the maritime provinces (excluding Newfoundland). Also known as the Cordilleran and Appalachian Orogens. 1. The Earth beneath our feet is not stationary; in fact, quite the opposite. Huge continental and oceanic plates are constantly moving ac...
The soil profile for the prairies or the Interior Platform, covers the majority of Alberta, Saskatchewan, Manitoba as well as parts of the Northwest Territories, Nunavut, Ontario, Quebec, and Newfo...
Therefore, the clear definition and designation of soil horizons and other layers are basic to soil classification. A soil horizon is a layer of mineral or organic soil material approximately parallel to the land surface that has characteristics altered by processes of soil formation.
Vertic horizon: A horizon affected by argillipedoturbation, which is the disruption and mixing of the horizon caused by shrinking and swelling of the clayey soil mass. It is characterized by the following: 1) irregular shaped, randomly oriented, intrusions of displaced materials within the solum.
Organic horizons. Named layers and materials of Organic soils. Tests for distinguishing organic layers. von Post scale of decomposition. Rules concerning horizon and layer designations. Need for precise definitions of horizons and layers. Chapter 3 Outline of the System and a Key to the Classification of a Pedon.
1. The presence of a horizon with a g suffix (e.g. Aeg, Bg, Btg, Cg, Cgk and others) within 50 cm of the mineral surface except if the Ah or Ap is greater than 50 cm thick; in this case the mineral horizon immediately beneath the A horizon has a g suffix.
SUMMARY. Soils in Canada are classified according to the Canadian System of Soil Classification (CSSC), a formal taxonomic system with a hierarchy of six levels. The highest level in the CSSC, the order, is based on diagnostic horizons that reflect the effects of the dominant soil-forming process.
