R: Soil chemistry properties data set

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 x 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)

[Package geoR version 1.7-5.2 Index]