Copyright © 2002, IIASA & RAS
All Rights Reserved
SOILS - Database
Source
General Characteristics
Stolbovoi V., I. Savin and B. Sheremet, Land Resources of Russia CD-ROM.
Soil Carbon Pools,
CO2 and CH4 Emissions
Stolbovoi V. Land Resources
of Russia CD-ROM.
Soil
Reference Profiles
Stolbovoi
V., I. Savin, B. Sheremet and L.Kolesnikova, Land Resources of Russia
CD-ROM.
Technical Description
The soil coverage presented in the CD-ROM is a generalized version
of the soil map of Russia at the scale 1:2.5 million (Fridland, 1988).
The generalization procedure has passed through two types of aggregation:
1) generalization of the thematic content, and 2) a generalization of
the mapping units or polygon geometry.
The generalization of the thematic content mainly deals with aggregation
of soil classes presented in the map legend. Frequently, the process of
scaling up soil information is based on vaguely defined arguments, like
the notions of their representativeness, genetic unity, structure of soil
cover patterns, the purpose the aggregated product will serve, etc. The
generalization applied in the study has followed the principle of maximum
identity with the original map. Only soils with minor extents have been
ignored. The total soils number in the original soils map is 204. The
revised version contains 163.
The second aspect, a generalization of mapping units, is due to the fact
that polygons occurring at a larger scale cannot always be shown on a
smaller scale. In this study, the soil mapping units were generalized
in accordance with traditional rules of observational cartography stating
that the minimal size of a mapped polygon should not be less than 1 square
centimeter (cm2). The areas of soils belonging to the deleted polygons
was added to similar soil of polygons remaining on the map. When necessary,
the deleted soils are included in the neighboring soil mapping unit as
an associated component. The total number of distinguished polygons is
1,329.
The soil naturalness coverage was created from a series of overlays and therefore is presented as an individual coverage. For more information on this coverage, refer to the soils description.
Table Definition
|
Soil profiles.dbf |
These databases both contain a field that links to the soil code in the soil coverage. In addition they contain lat and long coordinates allowing them to be converted into a spatial coverage. For a complete description of these databases please refer to the soil description. For a description of the attributes see below. |
Coverage Definition
| Coverage | Data Type | Fields | Description |
| Soil | Poly |
contour |
database
link link to russian classification russian soil class full description of russian class WRB soil class WRB acronym full description of WRB class WRB acronym FAO soil code FAO soil class FAO acronym full description of FAO class FAO acronym US soil class full description of US class US acronym Total Available Water Capacity soil drainage bulk density cation exchange capacity Methane production Topsoil acidity Nitrogen content CO2 respiration full description of russian soil class organic carbon 30cm organic carbon 50cm organic carbon 100cm organic carbon 200cm |
| Soil naturalness | Poly | impact | human impact on soil |
Attribute Description
Soil Database
Attributes from Soil_profiles.dbf and Soil_adjusted_characteristics.dbf
1. Soil ID in a WRB system
2. Lat - northern latitude (grad)
3. Long - longitude (grad)
4. Alt - altitude (m above sea level)
5. GWL-up the upper ground water level (cm)
6. GWL-down the lower ground water level (cm)
7. D-Rock - depth to hard rock (cm)
8. D-Oth.obs - depth for root penetration (permafrost, ground water table,
compacted or saline horizons, etc.)
9. PM - parent materials
10. Land Use - main land uses and covers (tundra, forest, grassland, medow,
bog, pasture, cropland
11. Horizon - identification of soil horizon according to the national
nomenclature
12. Depth - lower boundary of the horizon extent (cm)
13. Clay - clay content (%)
14. esd - equivalent diameter of the sphere - 1 µm (upper limit)
15. Silt - silt content (%)
16. esd - equivalent diameter of the sphere - 10 µm (upper limit)
17. Sand - content of the 1st sand fraction (%)
18. esd - equivalent diameter of the sphere - 50 µm (upper limit)
19. Sand - content of the 2nd sand fraction (%)
20. esd - equivalent diameter of the sphere - 250 µm (upper limit)
21. Sand - content of the 3rd sand fraction (%)
22. esd - equivalent diameter of the sphere - 1000 µm (upper limit)
23. Stones - content of stones (% of soil volume)
24. Soil Color - color according to the Munsell Soil Color Charts
25. Structure - soil structure
26. C - carbon content (%)
27. cod - identification of method (A3 Turin method of wet combustion;
A31 - ignition loss)
28. N - nitrogen content (%)
29. cod - identification of method ( A4 wet digestion after Kjeldahl method)
30. CaCO3 - total CaCO3 content (%)
31. cod - A6 calcimeter method (%)[measures CO2 emitted]
32. AG - CaSO4*2H2O gypsum content (%)
33. cod - A10 extraction by 0.2N HCL and deduction of a mount extracted
by 1:5 water solution
34. 35. pH(H2O) - acidity, pH 1:5 water solution
35. cod - method of acidity detection
36. EC - electro conductivity (dSm-1)
37. cod of the method of detection
38. ESP - content of exchangeable Na (%)
39. Ca - content of exchangeable Ca (mg-eqv/100g)
40. cod - neutral Ammonium Acetate extract
41. Mg - content of exchangeable Mg (mg-eqv/100g)
42. cod - neutral Ammonium Acetate extract
43. K - content of exchangeable K (mg-eqv/100g)
44. cod - neutral Ammonium Acetate extract
45. Na - content of exchangeable Na (mg-eqv/100g)
46. cod - neutral Ammonium Acetate extract
47. CEC - Cation Exchange Capacity (mg-eqv/100g)
48. cod - different method depending on soils (for details see Arinushkina,
1970)
49. BS - Base Saturation (%)
50. cod - ration of sum of exchangeable cations and CEC
51. TOT-POR - Total Porosity (%)
52. cod - (1 - bulk density/particle density)%
53. DB - Bulk density
54. cod - A29 - wet measurements in the field
