Get Taxon Criteria from the Keys to Soil Taxonomy
Usage
getTaxonCriteria(
taxon = NULL,
code = NULL,
level = c("order", "suborder", "greatgroup", "subgroup")
)Value
A named list. Each list element is named based on the input value (either taxon or code) and contains a data.frame derived from dataset ST_criteria_13th.
Examples
getTaxonCriteria(c("mollic haplocryalfs", "abruptic durixeralfs"))
#> $`mollic haplocryalfs`
#> content
#> 1 J. Other soils that do not have a plaggen epipedon and that have either:
#> 2 1. An argillic, kandic, or natric horizon; or
#> 3 2. A fragipan that has clay films 1 mm or more thick in some part.
#> 4 Alfisols, p. 73
#> 5 JB. Other Alfisols that have a cryic or isofrigid soil temperature regime.
#> 6 Cryalfs, p. 82
#> 7 JBC. Other Cryalfs.
#> 8 Haplocryalfs, p. 83
#> 9 JBCO. Other Haplocryalfs that have both:
#> 10 1. A color value, moist, of 3 or less and a color value, dry, of 5 or less (crushed and smoothed sample) either throughout the upper 18 cm of the mineral soil (unmixed) or between the mineral soil surface and a depth of 18 cm after mixing; and
#> 11 2. A base saturation (by NH4 OAc) of 50 percent ormore in all parts from the mineral soil surface to a depth of 180 cm or to a densic, lithic, or paralithic contact, whichever is shallower.
#> 12 Mollic Haplocryalfs
#> chapter page key taxon code clause logic
#> 1 4 70 Key to Soil Orders * J 1 OR
#> 2 4 70 Key to Soil Orders * J 2 OR
#> 3 4 70 Key to Soil Orders * J 3 END
#> 4 4 70 Key to Soil Orders * J 4 NEW
#> 5 5 73 Key to Suborders Alfisols JB 1 FIRST
#> 6 5 73 Key to Suborders Alfisols JB 2 LAST
#> 7 5 82 Key to Great Groups Cryalfs JBC 1 FIRST
#> 8 5 82 Key to Great Groups Cryalfs JBC 2 LAST
#> 9 5 85 Key to Subgroups Haplocryalfs JBCO 1 AND
#> 10 5 85 Key to Subgroups Haplocryalfs JBCO 2 AND
#> 11 5 85 Key to Subgroups Haplocryalfs JBCO 3 END
#> 12 5 85 Key to Subgroups Haplocryalfs JBCO 4 LAST
#>
#> $`abruptic durixeralfs`
#> content
#> 1 J. Other soils that do not have a plaggen epipedon and that have either:
#> 2 1. An argillic, kandic, or natric horizon; or
#> 3 2. A fragipan that has clay films 1 mm or more thick in some part.
#> 4 Alfisols, p. 73
#> 5 JD. Other Alfisols that have a xeric soil moisture regime.
#> 6 Xeralfs, p. 109
#> 7 JDA. Xeralfs that have a duripan within 100 cm of the mineral soil surface.
#> 8 Durixeralfs, p. 110
#> 9 JDAE. Other Durixeralfs that have an argillic horizon that has 35 percent or more noncarbonate clay throughout one or more subhorizons totaling 7.5 cm or more in thickness, and one or both of the following:
#> 10 1. A clay increase of 20 percent or more (absolute, in the fine-earth fraction) within a vertical distance of 7.5 cm or of 15 percent or more (absolute, in the fine-earth fraction) within a vertical distance of 2.5 cm, either within the argillic horizon or at its upper boundary; or
#> 11 2. An abrupt textural change between the eluvial horizon and the upper boundary of the argillic horizon.
#> 12 Abruptic Durixeralfs
#> chapter page key taxon code clause logic
#> 1 4 70 Key to Soil Orders * J 1 OR
#> 2 4 70 Key to Soil Orders * J 2 OR
#> 3 4 70 Key to Soil Orders * J 3 END
#> 4 4 70 Key to Soil Orders * J 4 NEW
#> 5 5 73 Key to Suborders Alfisols JD 1 FIRST
#> 6 5 73 Key to Suborders Alfisols JD 2 LAST
#> 7 5 109 Key to Great Groups Xeralfs JDA 1 FIRST
#> 8 5 109 Key to Great Groups Xeralfs JDA 2 LAST
#> 9 5 110 Key to Subgroups Durixeralfs JDAE 1 AND
#> 10 5 110 Key to Subgroups Durixeralfs JDAE 2 OR
#> 11 5 110 Key to Subgroups Durixeralfs JDAE 3 END
#> 12 5 110 Key to Subgroups Durixeralfs JDAE 4 LAST
#>
getTaxonCriteria(code = "ABC", level = c("greatgroup"))
#> $ABC
#> content chapter page
#> 1 ABC. Other Turbels that have anhydrous conditions. 9 195
#> 2 Anhyturbels, p. 196 9 195
#> key taxon code clause logic
#> 1 Key to Great Groups Turbels ABC 1 FIRST
#> 2 Key to Great Groups Turbels ABC 2 LAST
#>