ERDICM: Effective Rooting Zone depth

Description Usage Arguments Value Author(s) See Also

Description

Derive Effective Rooting Zone depth i.e. an effective depth suitable for plant growth. Usually minimum depth of soil out of three standard rooting depths: limiting soil properties, depth to water-stagnating layer and depth to bedrock.

Usage

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ERDICM(UHDICM, LHDICM, minimum.LRI, DRAINFAO, BDRICM, 
    threshold.LRI=20, srd=150, drain.depths, smooth.LRI=TRUE)

Arguments

UHDICM

numeric; upper horizon depth in cm

LHDICM

numeric; lower horizon depth in cm

minimum.LRI

numeric; minimum Limiting Rootability index

DRAINFAO

factor; FAO drainage class e.g. "V", "P", "I", "M", "W", "S", "E"

BDRICM

numeric; depth to bedrock in cm

threshold.LRI

numeric; treshold index for LRI

srd

numeric; maximum depth of interest

drain.depths

data.frame; estimate effective rooting depth per drainage class (DRAINFAO)

smooth.LRI

logical; specify whether to smooth LRI values using splines

Value

Returns a vector of effective rooting depth in cm.

Author(s)

Johan Leenaars, Maria Ruiperez Gonzalez and Tomislav Hengl

See Also

LRI



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