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VARIABLENAME

VARIABLEFORMAT(Dw.d)

DEFINITION

ssnflg C1 Soil series status as defined by USDA NRCS: E=established; I=inactive; T, tentative 1.

series C23 Soil series name as revised from field classification or the field classification if not revised1. Primary

key ('taxon01' table).

tstate C2Type state--state where the typical soil profile (TYPIFYING PEDON) for a soil series is located(TYPE LOCATION) 1.

estyear C4 Year that the soil series was officially established 1.soi5date C5 Year of most recent revision for that series in the SOILS-5 database 1,2 .ustate C30 States using--states in which the soil series is correlated 3.

soi501 C132

Soil pedons that have been selected as having properties characteristic of a series and are used inthe Soils-5 database 2. These pedons have been assigned identification numbers. Samples fromthese pedons have been analyzed by the USDA NRCS Soils Characterization Laboratory at theNational Soil Survey Center in Lincoln, Nebraska.

soi502 C132 Continuation of variable field 'soi501'.

order C24 Soil order--the highest level of taxonomic classification in the U.S. soil classification system asdefined by the USDA NRCS 4. There presently are twelve recognized soil orders.

suborder C24Soil suborder--the second highest level of soil taxonomic classification (subdivision of soil order) asdefined by the USDA NRCS 4.

ggroup C32Soil great group--the third highest level of soil taxonomic classification (subdivision of soil suborder)as defined by the USDA NRCS 4.

sgroup C60Soil subgroup--the fourth highest level of soil taxonomic classification (subdivision of soil greatgroup) as defined by the USDA NRCS 4.

[USDA, United State Department of Agriculture; NRCS, Natural Resource Conservation Service; VARIABLE FORMAT--Dwwhere D=data type (C, character; F, floating point; I, integer), w=field width, d=precision.]

Data dictionary for file 'taxon01', S3C Database, Version 20040427

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VARIABLENAME


DEFINITION



igrade C60Intergrade subgroup--soil subgroups that are trasitional forms to other soil orders, suborders, orgreat groups as defined by the USDA NRCS 4.

xgrade C16Extragrade subgroup--soil subgroups that have properties not representative of the great group butdo not appear to be transitional to any other recognized soil type as defined by the USDA NRCS 4.

soilfam C132Soil family--the fifth highest level of soil taxonomic classification (subdivision of soil subgroup) asdefined by the USDA NRCS 4.

pscl C48 Particle-size class--soil category based on particle size as defined by the USDA NRCS 4.

scpscl C48Strongly contrasting particle-size class--soil category based on two very different particle sizeclasses within the same soil as defined by the USDA NRCS 4.

mincl C16Mineral class--soil category based on the mineralogy of one or more of particle-size components ofa soil as defined by the USDA NRCS 4.

scmincl C48Strongly contrasting soil mineral class--soil category based on the mineralogy of the strongly

contrasting particle-size component of a soil as defined by the USDA NRCS 4.

ceacl C12Cation exchange activity class--soil category based on ratios of CEC to the weight percent of silicateclay as defined by the USDA NRCS 4.

calrecl C12Calcareous reaction class--soil category based on the presence or absence of carbonate, soilreaction, and aluminum concentration as defined by the USDA NRCS 4.

stempcl C16Soil temperature class--soil category based on mean annual or seasonal soil temperatures asdefined by the USDA NRCS 4.

sdepthcl C16Soil depth class--soil category based on the root-limiting depth in a soil as defined by the USDANRCS 4.

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VARIABLENAME


DEFINITION



smregime C16 Soil moisture regime as defined by the USDA NRCS 4.

3/ Soil Survey Staff, 2003, Soil series classification database: U.S. Department of Agriculture, Natural Resources Conservation Service,National Soil Survey Center, Lincoln, NE, accessed June 4, 2003 at URL http://soils.usda.gov/technical/classification/scfile/index.html .

4/ Soil Survey Staff, 1998, Keys to soil taxonomy, 8th ed.: United States Department of Agriculture, Natural Resources ConservationService, 328 p.

1/ Soil Survey Staff, 2003, Official soil series descriptions: U.S Department of Agriculture, Natural Resources Conservation Service,

National Soil Survey Center, Lincoln, NE, accessed June 4, 2003 at URL http://soils.usda.gov/technical/classification/osd/index.html .

2/ U.S. Department of Agriculture, Natural Resources Conservation Service, 1992, Soil Interpretation Record (SIR, Soils-5, SOI-5, or S-5)database that has been decomissioned and archived; accessed June 4, 2003 at URLhttp://topsoil.nserl.purdue.edu/nserlweb/weppmain/data/soildownloads.htm .

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