Brunisols

Brunisols are one of the more prevalent soils in the region and are recognized as well to imperfectly drained mineral soils with partial horizon profile development (Greenlee, 1981). The development of a prominent brownish Bm horizon altered by water, oxygen and solutions, are a common characteristic of brunisols (Greenlee, 1981). The processes on leaching and weathering are weakly developed in these soils, reflecting the chemical characteristics of Brunisols (e.g. acidity of parent materials and base status) (Greenlee, 1981).

Brunisolic soils are found on the lower and upper foothills, the Montane and Subalpine subregion (Archibald, Klappstein, and Corns, 1996). In the lower and upper foothills, the soils are developed on poorly drained mineral soils. In the Montane and Subalpine, brunisols usually occur under forests, such as lodgepole pine and Engelmann spruce (Archibald, Klappstein and Corns, 1996). Eutric Brunisols are common example of these soils, normally found on calcareous till and glaciofluvial deposits of the large mountain river valleys. Physical weathering of these soils are limited because of the low rainfall and high calcium carbonate present as parent material (McGregor, 1984).

   
 

 

Dystric Brunisol

 

Eutric Brunisol

 

Melanic Brunisol

Sombric Brunisol

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