| soil250 {geoR} | R Documentation |
Soil chemistry properties data set
Description
Several soil chemistry properties measured on a regular grid with 10x25 points spaced by 5 meters.
Usage
data(soil250)Format
A data frame with 250 observations on the following 22 variables.
- Linha
x-coordinate
- Coluna
y-coordinate
- Cota
elevation
- AGrossa
a numeric vecto, sand portion of the sample.
- Silte
a numeric vector, silt portion of the sample.
- Argila
a numeric vector, sand portion of the sample.
- pHAgua
a numeric vector, soil pH at water
- pHKCl
a numeric vector, soil pH by KCl
- Ca
a numeric vector, calcium content
- Mg
a numeric vector, magnesium content
- K
a numeric vector, potassio content
- Al
a numeric vector, aluminium content
- H
a numeric vector, hidrogen content
- C
a numeric vector, carbon content
- N
a numeric vector, nitrogen content
- CTC
a numeric vector, catium exchange capability
- S
a numeric vector, enxofrar content
- V
a numeric vector
- M
a numeric vector
- NC
a numeric vector
- CEC
a numeric vector
- CN
a numeric vector, carbon/nitrogen relation
Details
Uniformity trial with 250 undisturbed soil samples collected at 25cm
soil depth of spacing of 5 meters, resulting on a regular grid of
25 \times 10 points.
See also the data-set wrc with other variables colected at the same points.
Source
Bassoi thesis
References
Bassoi papers
Examples
data(soil250)
ctc <- as.geodata(soil250, data.col=16)
plot(ctc)