Detailed Soil Survey of the Mount Revelstoke Summit Area.

Detailed Soil Survey of the Mount Revelstoke Summit Area. Detailed Soil Survey of the Mount Revelstoke Summit Area.

sis.agr.gc.ca
from sis.agr.gc.ca More from this publisher
12.07.2015 Views

295-a20 cm-5 -bPlate 5 .The hummocky soils of map unit 6 are found in small enclosedbasins (5-a) where snowmelt water ponds in July . These soilsare classified as Sombric Ferro-Humic Podzol due to the presenceof Ah and Bhf horizons . Soil parent materials are predominantlyvolcanic ash .

, The soils have developed in volcanic ash deposits with predominantlysilt-sized particles which are highly susceptible to frostaction .The densely rooted turf formed by the Carex overlies thick Ahhorizons and B horizons that have sufficient content of organic carbonand iron and aluminum to qualify as Bhf horizons .These are the only soils in the area with hummocky microtopography.The following is a brief description of a Sombric Humo-FerricPodzol typical of map unit 6soils,Horizon Depth . (cm) Color Texture I C .F . I O .M .L 4 - 0 densely rooted Carex turfAhl 0 - 10 very dark grayish brown SiL 0 24 .3Ah2 10 - 18 very dark gray SiL 0 --Bf 18 - 26 yellowish red SiL 0 --Bhf 26 - 43 strong brown SiL 0 9 .5Cgj 43 - 73 brownish yellow (mottled) SiL 0 --Ahb 73 - 74 thin buried Ah horizonIICgj 74 - 95+ light olive brown SiL 0 --(mottled)The hummocky pattern and restricted drainage ofthese soilsresults in severe limitations for recreational use .Soil Map Unit 7(Orthic and Cumulic Regosol)The Regosolic soils of map unit 7occur on very steeply slopingto extremely sloping land surfaces (topography classes F to H) where thereappears to be considerable soil creep . Surface drainage is rapid .These soils occur under predominantly herbaceous vegetation,often in open forest stands .Common herbaceous species include Seneciotriangularis , Ligusticum canb i, and Erigeron peregrinus . The forest

, The soils have developed in volcanic ash deposits with predominantlysilt-sized particles which are highly susceptible to frostaction .The densely rooted turf formed by <strong>the</strong> Carex overlies thick Ahhorizons and B horizons that have sufficient content <strong>of</strong> organic carbonand iron and aluminum to qualify as Bhf horizons .These are <strong>the</strong> only soils in <strong>the</strong> area with hummocky microtopography.The following is a brief description <strong>of</strong> a Sombric Humo-FerricPodzol typical <strong>of</strong> map unit 6soils,Horizon Depth . (cm) Color Texture I C .F . I O .M .L 4 - 0 densely rooted Carex turfAhl 0 - 10 very dark grayish brown SiL 0 24 .3Ah2 10 - 18 very dark gray SiL 0 --Bf 18 - 26 yellowish red SiL 0 --Bhf 26 - 43 strong brown SiL 0 9 .5Cgj 43 - 73 brownish yellow (mottled) SiL 0 --Ahb 73 - 74 thin buried Ah horizonIICgj 74 - 95+ light olive brown SiL 0 --(mottled)The hummocky pattern and restricted drainage <strong>of</strong><strong>the</strong>se soilsresults in severe limitations for recreational use .<strong>Soil</strong> Map Unit 7(Orthic and Cumulic Regosol)The Regosolic soils <strong>of</strong> map unit 7occur on very steeply slopingto extremely sloping land surfaces (topography classes F to H) where <strong>the</strong>reappears to be considerable soil creep . Surface drainage is rapid .These soils occur under predominantly herbaceous vegetation,<strong>of</strong>ten in open forest stands .Common herbaceous species include Seneciotriangularis , Ligusticum canb i, and Erigeron peregrinus . The forest

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!