Morphological properties of typifying pedon.
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ANGYE SERIES |
Established Series PCS, JYH 20 Oct., 1978 |
The Angye series are members of the fine loamy, mixed, mesic family of Anthraquic Hapludalfs [Hydragric Anthrosols (Eutric Oxyaquic) classified by WRB]. These soils have gray loam Ap horizons with brown mottles, gray loam BAg horizons with dark yellowish brown mottles, brown clay loam Bt1 horizons with yellowish brown mottles, strong brown loam Bt2 horizons with grayish brown mottles, and light brownish gray loam BCt horizons with brownish yellow mottles. These soils are on local valleys derived from sandstone and conglomerate materials.
Typifying Pedon: Angye loam-paddy rice (Colors are for moist soil).
Slope: 2-7%
Elevation: 77 m above m.s.l.
Soil moisture regime: Udic (Anthraquic)
Soil temperature regime: Mesic
Parent material: Local alluvium from sandstone and conglomerate materials
Diagnostic features: An ochric epipedon from a depth of 0 to 18 cm and an argillic horizon from a depth of 35 to 150 cm (An anthraquic horizon from a depth of 0 to 35 cm and a hydragric horizon from a depth of 35 to 150 cm by WRB)
Described by: Song, K. C., S. J. Jung, and D. C. Noh, 18 March, 2010
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Morphological properties of typifying pedon. |
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Ap - 0 to 18 cm. Gray (10YR 5/1) loam; common fine to medium faint brown (7.5YR 4/4) mottles; structureless, puddled; slightly sticky and slightly plastic; many fine roots; common fine to medium pores; clear smooth boundary.
BAg - 18 to 35 cm. Gray (2.5Y 5/1) loam; common fine to medium distinct dark yellowish brown (10YR 4/4) mottles; moderate medium to coarse subangular blocky structure; firm, slightly sticky and slightly plastic; common fine roots; common fine pores; clear smooth boundary.
Bt1 - 35 to 60 cm. Brown (10YR 4/3) clay loam; common fine to medium faint yellowish brown (10YR 5/6) mottles; moderate medium to coarse prismatic structure; firm, sticky and plastic; thin continuous clay cutans; few fine roots; common fine to medium pores; few worm holes; clear wavy boundary.
Bt2 - 60 to 87 cm. Strong brown (7.5YR 5/6) loam; common fine to medium distinct grayish brown (10YR 5/2) mottles; weak fine to medium subangular blocky structure; friable, slightly sticky and slightly plastic; no roots; common fine to medium pores; clear smooth boundary.
BCt - 87 to 150 cm. Light brownish gray (2.5Y 6/2) loam; common fine to medium faint brownish yellow (10YR 6/6) mottles; weak fine to medium platy structure; friable, slightly sticky and slightly plastic; few fine pores.
Typifying pedon has an ochric epipedon from a depth of 0 to 18 cm and an argillic horizon from a depth of 35 to 150 cm, and has a base saturation (by sum of cations) of 35% or more at 125 cm below the upper boundary of the argillic horizon. That can be classified as Alfisol. It has aquic conditions for some time in normal years in one or more horizons within 50 cm of the mineral soil surface, but does not have 50 percent or more redox depletions with chroma of 2 or less within the upper 12.5 cm of the argillic horizon. Therefore it can be classified as Udalf. It meets the requirements of Hapludalf. It has anthraquic condition and keys out as Anthraquic Hapludalf.
Typifying pedon has in the fraction less than 75 mm in diameter, 15% or more particles with diameters of 0.1 to 75 mm and in the fine-earth fraction, 18 to 35% clay at the particle-size control section and has mesic soil temperature regime. Therefore it can be classified as fine loamy, mixed, mesic family of Anthraquic Hapludalf.
Type Location: About 200 meters south-east of the Keunma, Bogseong Ri, Sobo Myeon, Gunwi Gun, Gyeongsangbug Do (128o 28' 29.5'', 35o 17' 51.8'').
Range in Characteristics: These soils have ochric epipedons and argillic horizons. The solum thickness ranges from 100 to 150 cm. Depth to hard rock is more than 3 meters. Base saturation is more than 60 percent. Reaction is medium to neutral, except the surface horizons. The Ap horizons are grayish brown or gray loam, silt loam or sandy loam with strong brown or yellowish brown mottles. The Bt horizons are thick brown, strong brown or light brownish gray clay loam or loam with grayish brown, very dark gray, or very dark brown mottles.
Competing Series and Their Differentiae: These are the Chilgog, Ogdong, and Samam soils. The Chilgog soils occur mountain foot slopes and are derived from acidic rocks. The Ogdong soils occur mountain foot slopes and are derived from anorthite The Samam soils are reddish brown color and formed from red shale areas.
Setting: The Angye soils are on gently to moderately steep sloping areas in low terraces, local alluvial valleys or mountain foot slopes derived from sandstone and conglomerate materials.
Principal Associated Soils: These soils are Yonggog and Dongam in similar positions, Jeomgog and Yanggog soils in lower positions.
Drainage and Permeability: Moderately well drained; slow permeability; moderate runoff.
Use and Vegetation: The Angye soils are used for paddy field.
Distribution and Extent: The Angye soils are of small extent in sedimentary rock areas such as sandstone and conglomerate.
Series Established: Gunwi Gun, Gyeongsangbug Do, 1977. Revised, Gunwi Gun, Gyeongsangbug Do, 2010.
Laboratory data sheets of Angye soils.
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Depth (cm) |
Horizon |
( --- Total ---) |
(-- Clay --) |
(-- Silt --) |
(------- Sand -------) |
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Clay |
Silt |
Sand |
Fine |
Coarse |
Fine |
Coarse |
VF |
F |
M |
C |
VC |
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LT |
.002 |
.05 |
LT |
LT |
.002 |
.02 |
.05 |
.10 |
.25 |
.5 |
1 |
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.002 |
- .05 |
- 2 |
.0002 |
.002 |
- .02 |
- .05 |
- .10 |
- .25 |
- .50 |
- 1 |
- 2 |
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- - - - - - - - - - - Pct of ˂ 2mm (3A1) - - - - - - - - - - - |
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0-18 |
Ap |
20.3 |
32.6 |
47.1 |
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15.9 |
16.7 |
6.9 |
12.2 |
18.6 |
7.5 |
1.9 |
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18-35 |
BAg |
18.9 |
31.7 |
49.4 |
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15.3 |
16.4 |
7.0 |
12.1 |
20.4 |
8.3 |
1.5 |
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35-60 |
Bt1 |
23.9 |
39.4 |
36.7 |
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16.6 |
22.8 |
6.2 |
9.5 |
13.7 |
5.8 |
1.6 |
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60-87 |
Bt2 |
23.5 |
30.8 |
45.7 |
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16.4 |
14.4 |
3.4 |
10.5 |
18.0 |
7.7 |
6.1 |
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87-150 |
BCt |
26.5 |
33.0 |
40.5 |
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10.4 |
22.6 |
12.1 |
17.4 |
9.7 |
1.2 |
0.2 |
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Depth (cm) |
Coarse Fractions(mm) |
˃2mm |
Orgn |
Total |
Extr |
Total |
(-- Dith -Cit --) |
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Weight |
Wt |
C |
N |
P |
S |
Extractable |
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2-5 |
5-20 |
20-75 |
.1-75 |
Pct of |
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Fe |
Al |
Mn |
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Whole |
6A1c |
6B3a |
6S3 |
6R3a |
6C2b |
6G7a |
6D2a |
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Pct of ˂ 75mm (3B1) |
Soil |
Pct ˂ 2mm |
g/kg |
Pct of ˂ 2mm |
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0-18 |
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0.81 |
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18-35 |
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0.43 |
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35-60 |
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0.17 |
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60-87 |
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0.09 |
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87-150 |
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0.25 |
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Depth (cm) |
Ratio/Clay |
Atterberg |
( Bulk Density ) |
COLE |
(- Water Content -) |
WRD |
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CEC |
1500 |
Limits |
Field |
33 |
Oven |
Whole |
Field |
10 |
33 |
1500 |
Whole |
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kPa |
LL |
PI |
Moist |
kPa |
Dry |
Soil |
Moist |
kPa |
kPa |
kPa |
Soil |
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8D1 |
8D1 |
4P1 |
4P |
4A3a |
4A1d |
4A1h |
4D1 |
4B4 |
4B1c |
4B1c |
4B2a |
4C1 |
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Pct ˂0.4mm |
- - g/cc - - |
cm/cm |
-- Pct of ˂2mm -- |
cm/cm |
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0-18 |
0.42 |
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1.19 |
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36.7 |
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18-35 |
0.41 |
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1.68 |
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20.2 |
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35-60 |
0.39 |
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1.71 |
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18.5 |
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60-87 |
0.36 |
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1.59 |
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22.2 |
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87-150 |
0.49 |
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Depth (cm) |
( NH4OAc Extractable Bases ) |
Acid- |
Extr |
(----- CEC -----) |
Al |
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Ca |
Mg |
K |
Na |
Sum |
ity |
Al |
Sum |
NH4- |
Bases |
Sat |
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5B5a |
5B5a |
5B5a |
5B5a |
Bases |
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Cats |
OAc |
+ Al |
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6N2e |
6O2d |
6Q2b |
6P2b |
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6H5a |
6G9a |
5A3a |
5A8b |
5A3b |
5G1 |
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- - - - - - - - - - - - meq / 100g - - - - - - - - - - - - |
Pct |
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0-18 |
3.9 |
0.8 |
0.2 |
0.1 |
5.1 |
8.1 |
1.5 |
13.2 |
8.6 |
6.6 |
22.4 |
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18-35 |
5.2 |
1.3 |
0.2 |
0.1 |
6.8 |
5.0 |
0.3 |
11.8 |
7.8 |
7.1 |
4.4 |
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35-60 |
6.3 |
2.1 |
0.2 |
0.1 |
8.7 |
3.3 |
0 |
12.0 |
9.4 |
8.7 |
0 |
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60-87 |
5.2 |
2.4 |
0.1 |
0.1 |
7.8 |
3.6 |
0 |
11.4 |
8.5 |
7.8 |
0 |
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87-150 |
7.4 |
4.8 |
0.3 |
0.2 |
12.7 |
4.7 |
0.1 |
17.4 |
13.0 |
12.8 |
0.8 |
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Depth (cm) |
(Base Sat) |
CO3 as |
Res |
Cond |
(------ pH ------) |
Acid Oxalate Extraction |
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Sum |
NH4- |
CaCO3 |
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NaF |
KCl |
CaCl2 |
H2O |
Opt |
Al |
Fe |
Si |
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OAc |
˂2mm |
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.01M |
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Den |
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5C3 |
5C1 |
6E1g |
8E1 |
8I |
8C1d |
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8C1f |
8C1f |
8J |
6G12 |
6C9a |
6V2 |
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---- Pct ---- |
ohms/cm |
dS/m |
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1: 1 |
1: 2 |
1: 1 |
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- Pct of ˂2mm - |
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0-18 |
38.7 |
59.4 |
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4.1 |
4.5 |
5.1 |
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18-35 |
57.5 |
86.7 |
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5.1 |
5.7 |
6.3 |
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35-60 |
72.4 |
91.7 |
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5.8 |
6.4 |
7.2 |
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60-87 |
68.5 |
92.6 |
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6.0 |
6.6 |
7.3 |
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87-150 |
73.0 |
97.9 |
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3.9 |
5.0 |
5.7 |
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