soil_af_elements | R Documentation |
Connect to or download chemical soil element concentration (for the 0-30 cm topsoil) data for Africa. The spatial resolution is 30 arc-seconds (about 1 km2), aggregated from the original 250 m spatial resolution.
The data have an Open Data Commons Open Database License (ODbL)
For more information, see https://www.isric.org/projects/soil-property-maps-africa-250-m-resolution
soil_af_elements(var, path, ...)
var |
character. Variables name. One of: "Al", "B", "Ca", "Cu", "Fe", "K", "Mg", "Mn", "N", "Na", "P", "Ptot", "Zn". See Details |
path |
character. Path for storing the downloaded data. See |
... |
additional arguments passed to |
var | description | unit | |
Al | Extractable aluminum | mg kg-1 (ppm) | |
B | Extractable boron | mg kg-1 (ppm) | |
Ca | Extractable calcium | mg kg-1 (ppm) | |
Cu | Extractable copper | mg kg-1 (ppm) | |
Fe | Extractable iron | mg kg-1 (ppm) | |
K | Extractable potassium | mg kg-1 (ppm) | |
Mg | Extractable magnesium | mg kg-1 (ppm) | |
Mn | Extractable manganese | mg kg-1 (ppm) | |
N | Organic nitrogen | mg kg-1 (ppm) | |
Na | Extractable sodium | mg kg-1 (ppm) | |
P | Extractable phosphorus | mg (100 kg-1) | |
Ptot | Total phosphorus | mg (100 kg-1) | |
Zn | Extractable zinc | mg kg-1 (ppm) | |
SpatRaster
Hengl T, Heuvelink GBM, Kempen B, Leenaars JGB, Walsh MG, Shepherd KD, et al. (2015) Mapping Soil Properties of Africa at 250 m Resolution: Random Forests Significantly Improve Current Predictions. PLoS ONE 10(6): e0125814. doi:10.1371/journal.pone.0125814
soil_af
, soil_af_isda
, soil_world
# downloads a large file
fe <- soil_af_elements("Fe", path=tempdir(), quiet=TRUE)
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