Happy Valley Permanent Vegetation Plots

Walker, D.A., Auerbach, N.A., Nettleton, T.K., Gallant, A., Murphy, S.M. 1997. Happy Valley Permanent Vegetation Plots: Site factors, physical and chemical soil properties, plant species cover, photographs, soil descriptions, and ordination. Arctic System Science Flux Study, Institute of Arctic and Alpine Research, University of Colorado, Boulder, CO.

Home // Preliminary vegetation classification // Vegetation communities and sites // Legend for environmental variables // Environmental data // Relevé size, percent cover // Soils data // Relevé species data //
Appendices: Field descriptions of soils // Plot and soil photos // Plot location map

Field Description of Soil, Plot HV-10

Plot Number:	HV-10
Location:	Fluvial terrace near old campsite
Description by:	A. Gallant
Sample Date:	7/18/94
Sample Time:	12:00
Classification:
Parent Material:	Stabilized Alluvium
Geomorphic Surface:	Featureless
Elevation:	950 ft
Slope:	0°
Aspect:	Flat
Vegetation:	Dry Arctous rubra, Dryas integrifolia, Lupinus arcticus, Rhododendron lapponicum, dwarf shrub, forb tundra
Horizon:	Description:
Oi	0-2 cm | No sample
	Abrupt, smooth boundary; dead leaves, loose stems. Layer too thin to sample
Oa	2-8 cm | Sample S-91
	Very dark brown (7.5 YR 2/2). Abrupt, wavy boundary; sapric organic with less than 2% fibers after rubbing.
B1	8-18 cm | Sample S-92
	Mixed horizon with mottles and organic inclusions. Dark yellow-brown mottles (10 YR 4/6) from 0.5-1 cm, very dark gray-brown (10 YR 3/1.5) dominant matrix, black organic inclusions common 1-2 cm (10 YR 2/1). Weak, fine, subangular blocky structure with 0% gravel. Slightly sticky, slightly plastic consistence (wet); loam texture. Abrupt, smooth boundary; many fine roots.
B2	18-30 cm | Sample S-93
	Very dark gray-brown (10 YR 3/2). Moderate, medium, subangular blocky structure breaking into moderate medium granular structure. Slightly sticky, slightly plastic consistence (wet). Loam texture with abrupt, smooth boundary; few very fine roots.
B3	30-47 cm | Sample S-94
	Very dark gray (10 YR 3/1). Weak, medium subangular blocky structure. Nonsticky, nonplastic consistence (wet); sand texture.
Cobble layer	47+ cm | No sample