Bprep: Calculate the root length distribution with depth

In HannesDeDeurwaerder/SWIFT: SWIFT: Tracking stable water isotopic fluctuation along the length of a plant

Description

This function constructs a vector containing the root length distribution of a plant at every defined soil layer [in m m-3]

Usage

 Bprep(beta = NULL, R0 = NULL, Z = NULL)

Arguments

beta	Description: Factor in the root length density distribution function; Structure: One value, derived from Jackson et al. (1996), table 1
R0	Description: Factor in the root lenght density distribution function; Structure: One value, representative of the studied plant, here derived from Huang et al, [2017

. NOTE: Provide a positive value !

Z	Description: A vector of soil depths [in m]; Structure: A discrete vector of n elements, where n corresponds to the number of soil layers

Value

A discrete vector of n elements, with n the number of soil layers, containing the root lenght distribution of a studied plant

Author(s)

Hannes De Deurwaerder, Marco D. Visser, Matteo Detto, Pascal Boeckx, Felicien Meunier and Hans Verbeeck

References

References for R0 and beta values: (a) Huang et al (2017). The effect of plant water storage on water fluxes within the coupled soil plant system. New Phytologist, 213(3), 1093-1106. (b) Jackson et al (1996). A global analysis of root distributions for terrestrial biomes. Oecologia, 108(3), 389-411.

Examples

## The function is currently defined as
function (beta = NULL, R0 = NULL, Z = NULL) {
    		  B <- rep(NA, length(Z))
    		  UnCo <- 100
    		  for (h in 1:length(Z)) {
    	    	    B[h] = R0 * beta^(UnCo * Z[h]) * log(beta, base=exp(1))
    		  }
    		return(B)
  		}

HannesDeDeurwaerder/SWIFT documentation built on March 22, 2021, 4:49 p.m.