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TAXVAR

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TAXVAR

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									a662adb7-5cb8-405e-8385-249a190c0f19.xls

Page 1

Data dictionary for file 'taxon01', S3C Database, Version 20040427
[USDA, United State Department of Agriculture; NRCS, Natural Resource Conservation Service; VARIABLE FORMAT--Dw where D=data type (C, character; F, floating point; I, integer), w=field width, d=precision.]

VARIABLE NAME ssnflg series tstate estyear soi5date ustate

VARIABLE FORMAT (Dw.d) C1 C23 C2 C4 C5 C30

DEFINITION Soil series status as defined by USDA NRCS: E=established; I=inactive; T, tentative1. Soil series name as revised from field classification or the field classification if not revised1. Primary key ('taxon01' table). Type state--state where the typical soil profile (TYPIFYING PEDON) for a soil series is located (TYPE LOCATION)1. Year that the soil series was officially established1. Year of most recent revision for that series in the SOILS-5 database1,2. States using--states in which the soil series is correlated3. Soil pedons that have been selected as having properties characteristic of a series and are used in the Soils-5 database2. These pedons have been assigned identification numbers. Samples from these pedons have been analyzed by the USDA NRCS Soils Characterization Laboratory at the National Soil Survey Center in Lincoln, Nebraska. Continuation of variable field 'soi501'. Soil order--the highest level of taxonomic classification in the U.S. soil classification system as defined by the USDA NRCS4. There presently are twelve recognized soil orders. Soil suborder--the second highest level of soil taxonomic classification (subdivision of soil order) as defined by the USDA NRCS4. Soil great group--the third highest level of soil taxonomic classification (subdivision of soil suborder) as defined by the USDA NRCS4. Soil subgroup--the fourth highest level of soil taxonomic classification (subdivision of soil great group) as defined by the USDA NRCS4.

soi501

C132

soi502 order suborder ggroup sgroup

C132 C24 C24 C32 C60

a662adb7-5cb8-405e-8385-249a190c0f19.xls

Page 2

Data dictionary for file 'taxon01', S3C Database, Version 20040427
[USDA, United State Department of Agriculture; NRCS, Natural Resource Conservation Service; VARIABLE FORMAT--Dw where D=data type (C, character; F, floating point; I, integer), w=field width, d=precision.]

VARIABLE NAME igrade

VARIABLE FORMAT (Dw.d) C60

DEFINITION Intergrade subgroup--soil subgroups that are trasitional forms to other soil orders, suborders, or great groups as defined by the USDA NRCS4. Extragrade subgroup--soil subgroups that have properties not representative of the great group but do not appear to be transitional to any other recognized soil type as defined by the USDA NRCS4. Soil family--the fifth highest level of soil taxonomic classification (subdivision of soil subgroup) as defined by the USDA NRCS4. Particle-size class--soil category based on particle size as defined by the USDA NRCS4. Strongly contrasting particle-size class--soil category based on two very different particle size classes within the same soil as defined by the USDA NRCS4. Mineral class--soil category based on the mineralogy of one or more of particle-size components of a soil as defined by the USDA NRCS4. Strongly 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 NRCS4. Cation exchange activity class--soil category based on ratios of CEC to the weight percent of silicate clay as defined by the USDA NRCS4. Calcareous reaction class--soil category based on the presence or absence of carbonate, soil reaction, and aluminum concentration as defined by the USDA NRCS4. Soil temperature class--soil category based on mean annual or seasonal soil temperatures as defined by the USDA NRCS4. Soil depth class--soil category based on the root-limiting depth in a soil as defined by the USDA NRCS4.

xgrade

C16

soilfam pscl scpscl mincl scmincl ceacl calrecl stempcl sdepthcl

C132 C48 C48 C16 C48 C12 C12 C16 C16

a662adb7-5cb8-405e-8385-249a190c0f19.xls

Page 3

Data dictionary for file 'taxon01', S3C Database, Version 20040427
[USDA, United State Department of Agriculture; NRCS, Natural Resource Conservation Service; VARIABLE FORMAT--Dw where D=data type (C, character; F, floating point; I, integer), w=field width, d=precision.]

VARIABLE NAME smregime

VARIABLE FORMAT (Dw.d) C16

DEFINITION Soil moisture regime as defined by the USDA NRCS4.

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 URL http://topsoil.nserl.purdue.edu/nserlweb/weppmain/data/soildownloads.htm . 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 Conservation Service, 328 p.


								
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