ptf.data: Soil properties example data

In melwey/euptf: Hydraulic pedotransfer functions for Europe

Soil properties example data

Description

Example data of soil properties formatted to run the PTFs from package euptf.

Usage

data(ptf.data)

Format

A data frame with 60 observations on the following 10 variables.

SAMPLE_ID

a numeric vector

TOPSOIL

a factor with levels sub top

USSAND

a numeric vector of sand content in mass percent. Particles of diameter between 0.05 and 2 mm.

USSILT

a numeric vector of silt content in mass percent. Particles of diameter between 0.002 and 0.05 mm.

USCLAY

a numeric vector of clay content in mass percent. Particles of diameter less than 0.002 mm.

OC

a numeric vector of organic carbon content in mass percent. Determined by dry combustion after removal of carbonates or harmonised to that method.

BD

a numeric vector of bulk density measurements (grams cm^(-3))

PH_H2O

a numeric vector of soil pH in 1:2.5 soil:water solution.

CEC

a numeric vector of cation exchange capacity (meq (100 g)^(-1))

CACO3

a numeric vector of calcium carbonates content in mass percent.

References

Weynants M. et al. 2013. European Hydropedological Data Inventory (EU-HYDI). EUR Scientific and Technical Research Series. Luxembourg: Publication Office of the European Commission. 168p. doi: 10.2788/5936.

See Also

predict.ptf

Examples

data(ptf.data)
str(ptf.data)

melwey/euptf documentation built on Sept. 17, 2022, 3:35 a.m.