Annex classifications of Soil Map of Uzbekistan (smu)




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ANNEX 1.
1. Classifications of Soil Map of Uzbekistan (SMU)


Nature-Climatic Zone, Belt

Index

Desert zone

1

Transition area from desert to sierozem belt

2

Sierozem belt:

 

ephemeral steppe (light sierozem)

3

ephemeral steppe (typical sierozem)

4

diverse-grass steppe (dark sierozem)

5

Medium height mountain belt

6

High mountainous belt

7




Geomorphology

Complex

Sub-complex

I. Low-lying accumulative plains of the quaternary age

100

 

Coastal-marine slightly-wavy abrasion-accumulative plains and modern coastal delta




101

Ancient delta




102

Alluvial slightly terraced valleys




 

2. Foothill-piedmont accumulative plains of the quaternary times

200

 

Plains of proluvial tails of the low mountainous areas




201

Alluvial plains and subaeral river deltas




202

3. Piedmont accumulative-erosion plains and erosion-denudation plains

300

 

Proluvial plains of the piedmont tails of low mountainous areas




301

Proluvial - alluvial plains of sub-aeral deltas




302

Depressions at the contact of the alluvial plains and proluvial tails of low mountainous areas




303

Deeply terraced river valleys and intermountan valleys




304

4. Chine-wavy plains of the piedmonts

400

 

Loess deeply saparated plains




401

Ostanets deeply separated plains - adirs




402

5. Plains of uplifted intermontane depressions

500

 

Low mountain (traadir) sloping plais




501

Plains of intermontane depressions and high-mountains river valleys




502

6. Denudation plains of pre-quarternary time and plains of aeolian accumulations

600

 

Table-ostanets plains




601

Tertiary cretaceous plateau




602

Abrasion plains




603

Low mountains and separate hills in plain part




604

Aeolic-sandy plains




605

7. Depressions

700

 

Depressions and hollows




701

8. Mountain systems

800

 

Mountain slopes




801

Medium-mountain block-folded rocky slopes of mountain ranges




802

High-mountain block-folded divided parts of mountain ranges

803




Ground water table, m

 Index

>5

1

3-5

2

2-3

3

1-2

4

<1

5


Parent rocks

Index

Relief characteristics

Index

eluvium of carbonateless rocks (granites, granodiorite, shales)

1

Near-bed bank

1

eluvium of limestones, dolomite and other carbonate rocks

2

inter-bed depressions, hollows

2

eluvium of saliferous rocks (tertiary clays, marls, sandstones)

3

Porous, ridgy-porous and bumpy detritus of sands

3

Deluvial

4

flat

4

proluvial

5

slightly wavy

5

loess-like

6

wavy

6

alluvial

7

gently wavy

7

alluvial-proluvial

8

broadly wavy

8

proluvial-alluvial

9

hilly-ridgy

9

aeolian

10

ridgy-wavy

10

deltoid

11

steep

11

lacustrine

12

upper part of the slope

12

marine

13

middle part of the slope

13

elluvial deluvial complex (erosion-tectonic and deluvial-proluvial)

14

lower part of the slope

14







periphery

15



Slopes

 

Index

Exposition

Index

steep

> 0.1

1

North

n

Very steep-downhill

0.1-0.05

2

South

s

Steep-downhill

0.05-0.02

3

East

e

Downhill

0.02-0.01

4

West

z

Gentle downhill

0.01-0.005

5

North-West

nw

very gentle downhill

0.005-0.002

6

North-East

ne

flatted

0.002-0.001

7

South-West

sw

extremely flatted

0.001-0.0005

8

South-East

se

practically not sloping

< 0.0005

9










Width of melkozem layer

Width of the layer, cm

Index

Stoniness

Content of stones > 5 cm

Index

Shortened

0-30

1

 

m3/ha

ton /ha




Slightl thick

30-50

2

Absent

 

 

1

Moderately thick

50-70

3

Poor

5.0-20.0

13-52

2

Thick

70-100

4

Moderate

20-50

52-130

3

Super thick

>100

5

Heavy

50-100

130-260

4










Very heavy

100-200

260-520

5










Extremely heavy

200-500

520-1300

6




Degree of Salinisation

Index

EC dS/m

non

1

< 3

slightly

2

3-8

moderate

3

8-16

severely

4

>16




Degree of erosion (washing out) of soil

erosion

Slight ( up to 50% horiz. А)

1e

Moderate (more than 50% or 100% horiz. А)

2e

Heavy (partially or 100% horiz. В)

3e







Degree of soil deflation (wind erosion)

deflation

Slight (thickness А+В1 is lessened by 5cm + up to 5 cm of sediments)

1d

Moderate ( thickness А+В1 is lessened by 10 cm + up to 20 cm of sediments)

2d

Heavy (thickness А+В1 is lessened by 10-20 cm and more + more than 20 cm of sediments)

3d



SOIL PROFILE MORPHOLOGY

Genetic horizon




Index

A




Humus-accumulative horizon

1

Aп




Arable horizon

2

А1




Humus-accumulative sub-horizon 1

3

А2




Humus-accumulative sub-horizon 2

4

В




Illuvial (transition horizon)

5

В1




Illuvial sub-horizon 1

6

В2




Illuvial sub-horizon 2

7

В3




Illuvial sub-horizon 3

8

В4




Illuvial sub-horizonIlluvial 4

9

С




Underlying rock

10




Colour

Index

Colour

Index

orange

1

brownish-whitish

28

orange-brown

2

brownish-grey

29

dark-orange

3

brownish-straw-coloured

30

yellow

4

brownish-bluish grey

31

yellowish

5

brown-grey

32

yellow-brown

6

brown greyish

33

yellowish-brown

7

bluish grey

34

yellowish-grey

8

bluish grey-grey

35

yellow-grey

9

bluish-greyish-grey

36

cream

10

dark-bluish grey

37

ochre-coloured

11

brown

38

ochre-and-rusty-coloured

12

dark-grey

39

fallow

13

light grey

40

grey

14

chocolate

41

dark-grey

15

light chocolate

42

light-grey

16

rusty

43

greyish

17

black

44

whitish-grey

18

green

45

greyish-brownish

19

greenish-rusty

46

grey-brownish

20

pink

47

grey-rusty

21

white

48

greyish-brown

22

whitish

49

pale yellow

23

bluish-white

50

pale yellow-grey

24

dark-reddish-brown

51

brown

25

brown-dark-reddish

52

dark-brown

26

rusty-grey

53

light-brown

27

 

 
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