00179001

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http://onlinepubs.trb.org...s/trr/1977/642/642-001.pdf

https://scholar.google.co...land&publication_year=1977

Soil Taxonomy is a comprehensive soil classification developed from 1951 to 1974. In synthesizing the system, all soil properties were considered but selection of differentiating criteria was guided by modern theories of soil genesis. To the degree permitted by present knowledge, the class limits are defined in quantitative terms. The system was designed to be uniformly usable and applicable by competent soil scientists regardless of their area of training and experience. In this system, classification is objective in that it proceeds from properties of the soils themselves and not from the beliefs of the pedologist about soils in general. The system was intended to embrace all known kinds of soils including cultivated and eroded soils. Definitions for a few classes are incomplete because of lack of sufficient data. Soil Taxonomy is a six-category system that permits aggregation of soil data and interpretations at various levels of generalization, whether they are displayed as maps or statistics. It is the only soil classification with a consistent, systematic nomenclature that indicates location in the system and something about the properties of the soils in each class. Soil properties that are important for plant growth also affect the performance of soils for engineering and other nonfarm uses. Soil Taxonomy is a tool for communicating about soils and for extending modern technology into newly developing areas. Interpretations can be made for almost all farm and nonfarm uses. /Author/

Publication of this paper sponsored by Committee on Exploration and Classification of Earth Materials. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.

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pp 2-6

1977

Transportation Research Record

0309026717

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References (7)

Performance; Plants; Properties of materials; Soil science; Soil types; Soils

Soil classification; Soil properties

Geotechnology; Highways; Materials

TRIS, TRB

Aug 19 1978 12:00AM

• APPLICATION OF SOIL TAXONOMY IN ENGINEERING
• CLAY STRUCTURE AND RATE PROCESS THEORY
• CLIMATIC MATERIALS CHARACTERIZATION OF FINE-GRAINED SOILS
• DESICCATION OF SOILS DERIVED FROM VOLCANIC ASH
• DIAGNOSTIC SOIL HORIZONS IN SOIL TAXONOMY
• FACTORS THAT AFFECT WATER EROSION FROM CONSTRUCTION AREAS
• PARTICLE SIZE AND MINERALOGY IN SOIL TAXONOMY
• PHYSICOCHEMICAL CONSIDERATIONS IN THERMAL SUSCEPTIBILITY OF A BASE-COURSE MATERIAL (ABRIDGMENT)
• PREDICTION MODEL FOR UNSATURATED HYDRAULIC CONDUCTIVITY OF HIGHWAY SOILS
• RAINFALL FACTORS THAT AFFECT EROSION
• RELATION BETWEEN RESILIENT MODULUS AND STRESS CONDITIONS FOR COHESIVE SUBGRADE SOILS
• SAMPLING A GLACIAL SILTY CLAY
• SOIL MOISTURE AND TEMPERATURE REGIMES IN SOIL TAXONOMY
• SOIL PROPERTIES THAT AFFECT EROSION
• SOIL SERIES AND SOIL TAXONOMY