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 |
VARIABLE FORMAT (Dw.d) |
DEFINITION |
ssnflg |
C1 |
Soil series status as defined by
USDA NRCS: E=established; I=inactive;
T, tentative1. |
series |
C23 |
Soil series name as revised from
field classification or the field classification if not revised1. Primary key ('taxon01' table). |
tstate |
C2 |
Type 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 established1. |
soi5date |
C5 |
Year of most recent revision for
that series in the SOILS-5 database1,2. |
ustate |
C30 |
States using--states in which
the soil series is correlated3. |
soi501 |
C132 |
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. |
soi502 |
C132 |
Continuation of variable field 'soi501'. |
order |
C24 |
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. |
suborder |
C24 |
Soil suborder--the second
highest level of soil taxonomic classification (subdivision of soil order) as
defined by the USDA NRCS4. |
ggroup |
C32 |
Soil great group--the third
highest level of soil taxonomic classification (subdivision of soil suborder)
as defined by the USDA NRCS4. |
sgroup |
C60 |
Soil subgroup--the fourth
highest level of soil taxonomic classification (subdivision of soil great
group) as defined by the USDA NRCS4. |
igrade |
C60 |
Intergrade subgroup--soil
subgroups that are trasitional forms to other soil orders, suborders, or
great groups as defined by the USDA NRCS4. |
xgrade |
C16 |
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. |
soilfam |
C132 |
Soil family--the fifth highest
level of soil taxonomic classification (subdivision of soil subgroup) as
defined by the USDA NRCS4. |
pscl |
C48 |
Particle-size class--soil
category based on particle size as defined by the USDA NRCS4. |
scpscl |
C48 |
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. |
mincl |
C16 |
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. |
scmincl |
C48 |
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. |
ceacl |
C12 |
Cation exchange activity
class--soil category based on ratios of CEC to the weight percent of silicate
clay as defined by the USDA NRCS4. |
calrecl |
C12 |
Calcareous reaction class--soil
category based on the presence or absence of carbonate, soil reaction, and
aluminum concentration as defined by the USDA NRCS4. |
stempcl |
C16 |
Soil temperature class--soil
category based on mean annual or seasonal soil temperatures as defined by the
USDA NRCS4. |
sdepthcl |
C16 |
Soil depth class--soil category
based on the root-limiting depth in a soil as defined by the USDA NRCS4. |
smregime |
C16 |
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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