LOCATION DRAANJIK AK
Established Series
JDP/NR/TJR
02/2022
DRAANJIK SERIES
Landscape--alluvial plains
Landform--stream terraces
Slope--0 to 3 percent
Parent material--alluvium
Mean annual precipitation--about 255 mm
Mean annual air temperature--about -6 degrees C
Depth class--very deep
Drainage class--well drained
Soil moisture regime--udic
Soil temperature regime--cryic
Soil moisture subclass--typic
TAXONOMIC CLASS: Coarse-silty over sandy or sandy-skeletal, mixed, superactive Typic Calcicryepts
TYPICAL PEDON: Draanjik very fine sandy loam on a forested terrace with a slope of 1 percent and an elevation of 168 m (The soil was moist throughout when described on August 17, 2014.)
Oe--0 to 4 cm; moderately decomposed plant material; few medium and coarse roots; slightly acid (pH 6.3); abrupt smooth boundary
E--4 to 20 cm; stratified loam and silt loam; light brownish gray (10YR 6/2) dry, yellowish brown (10YR 5/4) moist; weak fine granular structure; soft, very friable, nonsticky and nonplastic; few coarse roots, common medium roots, and many fine roots; few fine and medium pores; very strongly acid (pH 5.0); clear smooth boundary
Bw--20 to 31 cm; silt loam; light yellowish brown (10YR 6/4) dry, yellowish brown (10YR 5/6) dry; moderate medium subangular blocky structure; soft, very friable, nonsticky and nonplastic; common fine and medium roots; few fine and medium pores; slightly effervescent; moderately alkaline (pH 7.9); clear smooth boundary
Bkn1--31 to 40 cm; silt loam; light brownish gray (2.5Y 6/2) dry, grayish brown (2.5Y 5/2) moist; weak fine granular structure; soft, very friable, nonsticky and nonplastic; common fine and medium roots; few fine and medium pores; violently effervescent; moderately alkaline (pH 8.3); diffuse smooth boundary
Bkn2--40 to 80 cm; silt loam; light brownish gray (2.5Y 6/2) dry, light olive brown (2.5Y 5/3) moist; moderate thin platy structure; soft, very friable, nonsticky and nonplastic; common fine roots, and few medium roots; few fine and medium pores; strongly effervescent; moderately alkaline (pH 8.2); clear smooth boundary
2C1--80 to 90 cm; stratified gravelly loam and gravelly fine sandy loam; light brownish gray (2.5Y 6/2) dry, olive brown (2.5Y 4/3) moist; massive structure; soft, very friable, nonsticky and nonplastic; few fine pores; slightly effervescent; moderately alkaline (pH 8.3)
2C2--90 to 105 cm; extremely gravelly sand; light brownish gray (2.5Y 6/2) dry, dark grayish brown (2.5Y 4/2) moist; single grain structure; loose, nonsticky and nonplastic; few fine pores; slightly effervescent; moderately alkaline (pH 8.3)
2C3--105 to 150 cm; extremely gravelly sand; light brownish gray (2.5Y 6/2) dry, dark grayish brown (2.5Y 4/2) moist; single grain structure; loose, nonsticky and nonplastic; few fine pores; slightly effervescent; moderately alkaline (pH 8.3)
TYPE LOCATION: Yukon-Koyukuk Census Area, Alaska; latitude 66.8574820 degrees north, longitude 143.9676460 degrees west, datum WGS 84 (coordinates determined with a GPS)
RANGE IN CHARACTERISTICS:
Mean annual soil temperature--0.5 to 2.5 degrees C
Rock fragment content--35 to 85 percent gravels (by weighted average) in the substratum
Oe horizon
Thickness--3 to 15 cm
Reaction--4.5 to 7.0
E horizon
Hue--10YR, 2.5Y
Value--3 to 5 moist, 5 or 6 dry
Chroma--2 to 4 moist
Fine-earth texture--silt loam, loam, very fine sandy loam
Clay content--0 to 18 percent
Reaction--4.5 to 7.5
Effervescence--none
Thickness--5 to 17 cm
Bw horizon
Hue--7.5YR, 10YR, 2.5Y
Value--3 or 4 moist, 5 or 6 dry
Chroma--3 or 4 moist
Fine-earth texture--silt loam, very fine sandy loam
Clay content--0 to 18 percent
Reaction--7.5 to 8.5
Effervescence--slight to strong
Thickness--5 to 25 cm
Bkn1 and Bkn2 horizons
Hue--10YR, 2.5Y
Value--4 to 6 moist, 6 to 8 dry
Chroma--2 or 3 moist
Fine-earth texture--silt loam, very fine sandy loam
Clay content--0 to 18 percent
Reaction--7.5 to 9.5
Effervescence--strong to violent
Other features--15 percent or more (by weight, fine-earth fraction) calcium carbonate
Thickness--20 to 60 cm
2C1 horizon
Hue--10YR, 2.5Y, 5Y
Value--3 to 5 moist, 5 to 7 dry
Chroma--1 or 4 moist
Fine-earth texture--silt loam, loam, fine sandy loam
Rock fragment content--20 to 35 percent
Clay content--0 to 18 percent
Reaction--7.5 to 9.0
Effervescence--slight to strong
Thickness--10 to 20 cm
2C2 and 2C3 horizons
Hue--10YR, 2.5Y, 5Y
Value--3 to 5 moist, 5 to 7 dry
Chroma--1 or 4 moist
Fine-earth texture--silt loam, very fine sandy loam
Rock fragment content--20 to 85 percent
Clay content--0 to 18 percent
Reaction--7.5 to 9.0
Effervescence--slight to strong
Thickness--70 to 100 cm
COMPETING SERIES:
None
GEOGRAPHIC SETTING:
Elevation--100 to 300 m
Climate--warm, moist, short summers; very cold, dry, long winters
Mean annual precipitation--210 to 310 mm
Mean annual air temperature-- -12 to 0 degrees C
Frost-free period--45 to 97 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Tlozhavun--no aquic conditions within 150 cm; no calcic horizons or sodic properties; similar landforms
Tajittro--aquic conditions within 100 cm; permafrost within 1 m; no calcic horizons or sodic properties; similar landforms
Yasuda--aquic conditions within 25 cm; adjacent terrace depressions; sodic properties
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Saturation in normal years--none
Flooding--none
Ponding--none
Saturated hydraulic conductivity (Ksat)--high throughout
USE AND VEGETATION:
Use--wildlife habitat, subsistence, recreation
Potential natural vegetation--White spruce, quaking aspen, russet buffaloberry, prickly rose, grayleaf willow, twinflower, lingonberry, purple reedgrass, false toadflax, tall bluebells, Jakutsk snowparsley, sidebells wintergreen, eastern pasqueflower, splendid feather moss, Ptilidium liverwort, greygreen reindeer lichen, felt lichen, cup lichen
DISTRIBUTION AND EXTENT: Yukon Flats Lowlands, Alaska; MLRA 232; moderate extent
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: WASILLA, ALASKA
SERIES ESTABLISHED: Yukon Flats National Wildlife Refuge, Yukon-Koyukuk Census Area, Alaska; 2020
REMARKS:
Diagnostic horizons and other features in this pedon
*Particle-size control section--zone from 29 to 104 cm
*Ochric epipedon
*Albic materials--E horizon
*Calcic horizon--Bkn1 and Bkn2 horizons
*Free carbonates--Bw, Bkn1, Bkn2, 2C1, 2C2, and 2C3 horizons
Soils in this series do not meet the criteria for a mollic epipedon due to thickness.
Where secondary carbonates are not visible, pedogenic accumulation of carbonates is inferred from increase in effervescence and pH compared to surrounding horizons. See pedon IDs S2014AK290001 and S2014AK290002 in the NCSS database for supporting calcium carbonate data.
Sodic properties may be present in some horizons with an exchangeable sodium percentage of more than 15 percent, but these horizons do not meet diagnostic criteria for a natric horizon. See pedon IDs S2014AK290001 and S2014AK290002 in the NCSS database for supporting chemical data.
National Cooperative Soil Survey
U.S.A.