soil.classes: Soil classification tables

In GSIF: Global Soil Information Facilities

Description

Standard soil classification tables for the United States Department of Agriculture (USDA) and IUSS / FAO World Reference Base (WRB) classification systems, including the tables used to correlate various soil classification systems.

Usage

data(soil.classes)

Format

Contains a list of tables:

Canadian

data frame; Canadian soil classification system (Soil Classification Working Group, 1998)

FAO1990.WRB

data frame; FAO 1990 (FAO-Unesco Soil Classification System) system to WRB (2006)

USDA_GreatGroups

data frame; list of USDA Great Groups (USDA, 2010)

WRB_versions

data frame; correlation between various FAO/WRB versions (Krasilnikov et al. 2009)

FAO1974.WRB

data frame; correlation FAO 1974 system to WRB (IUSS Working Group WRB, 2006)

USDA.WRB

data frame; correlation USDA system to WRB system

Soils_World

data frame; referent soil profiles of the world (van Baren and Lof, 1987)

Note

Some of the original tables from the literature have been adjusted / updated by the author. Correlation between various national and international systems often leads to multiple soil classes being possible equivalents. These are separated in tables using "/" symbol e.g. Dark Gray Chernozem = Boralfic Boroll / Albolls. Some national soil classification systems contain classes which are completely unique and hence most likely can not be correlated to any class in the target system.

Author(s)

Tomislav Hengl

References

• van Baren, H. and Lof, P. (1987) Soils of the World, published by Elsevier in Association with ISRIC, FAO, and UNESCO ISBN 0444425756

• Krasilnikov, P., Marti, J., Arnold, R., and Shoba, S., eds. (2009) A Handbook of Soil Terminology, Correlation and Classification, Earthscan LLC, pp. 448 ISBN 9781136546631

• Soil Classification Working Group, (1998) The Canadian System of Soil Classification. 3rd Ed. Agriculture and Agri-Food Canada Publication 1646, 187 pp. ISBN 0660174049

• USDA / Soil Survey Staff, (2010) Keys to Soil Taxonomy (Eleventh Edition) U.S. Department Of Agriculture, Natural Resources Conservation Service, 346 pp. ISBN 9781782662112

• IUSS Working Group WRB (2006) World Reference Base for Soil Resources 2006: A Framework for International Classification, Correlation and Communication, Food and Agriculture Organization of the United Nations 128 pp.

Examples

data(soil.classes)
soil.classes$USDA_GreatGroups[1,]
DGC <- which(soil.classes$Canadian$CSSC_Great_Groups=="Dark Gray Chernozem")
soil.classes$Canadian[DGC,]

Example output

GSIF version 0.5-5.1 (2019-01-04)
URL: http://gsif.r-forge.r-project.org/
  Great_Group Suborder    Order                         TAX
1  Albaqualfs  Aqualfs Alfisols Alfisols_Aqualfs_Albaqualfs
   CSSC_Soil_Order_Code CSSC_Soil_GreatGroup_Code TAX_GTGRP   CSSC_Great_Groups
55                   CH                        GD        DG Dark Gray Chernozem
56                   CH                        GD        DG Dark Gray Chernozem
57                   CH                        GD        DG Dark Gray Chernozem
58                   CH                        GD        DG Dark Gray Chernozem
59                   CH                        GD        DG Dark Gray Chernozem
60                   CH                        GD        DG Dark Gray Chernozem
61                   CH                        GD        DG Dark Gray Chernozem
62                   CH                        GD        DG Dark Gray Chernozem
63                   CH                        GD        DG Dark Gray Chernozem
64                   CH                        GD        DG Dark Gray Chernozem
   TAX_SBGRP                            CSSC_Class TAX_ID
55         O            Orthic Dark Gray Chernozem  CH_DG
56         R              Rego Dark Gray Chernozem  CH_DG
57        CA        Calcareous Dark Gray Chernozem  CH_DG
58        SZ        Solonetzic Dark Gray Chernozem  CH_DG
59         V            Vertic Dark Gray Chernozem  CH_DG
60        GL            Gleyed Dark Gray Chernozem  CH_DG
61       GLR       Gleyed Rego Dark Gray Chernozem  CH_DG
62      GLCA Gleyed Calcareous Dark Gray Chernozem  CH_DG
63      GLSZ Gleyed Solonetzic Dark Gray Chernozem  CH_DG
64       GLV     Gleyed Vertic Dark Gray Chernozem  CH_DG
                    TAXOUSDA TAXNWRB
55 Boralfic Boroll / Albolls Greyzem
56 Boralfic Boroll / Albolls Greyzem
57 Boralfic Boroll / Albolls Greyzem
58 Boralfic Boroll / Albolls Greyzem
59 Boralfic Boroll / Albolls Greyzem
60 Boralfic Boroll / Albolls Greyzem
61 Boralfic Boroll / Albolls Greyzem
62 Boralfic Boroll / Albolls Greyzem
63 Boralfic Boroll / Albolls Greyzem
64 Boralfic Boroll / Albolls Greyzem

GSIF documentation built on May 2, 2019, 5:44 p.m.