resistances: Soil-plant resistances

Description

Calculates and draws rhizosphere, root, stem and leaf resistances for simulation time steps

Usage

resistances(
  x,
  cohort,
  relative = FALSE,
  draw = FALSE,
  cumulative = FALSE,
  xlab = NULL,
  ylab = NULL
)

Value

If draw = FALSE, the function returns list with three items:

pathway: A data frame with dates in rows and resistance segments in columns (Rhizosphere, Root, Stem and Leaf).
root: A data frame with dates in rows and root resistances for soil layers in columns.
rhizosphere: A data frame with dates in rows and rhizosphere resistances for soil layers in columns.

Values depend on whether relative = TRUE (percentages) or relative = FALSE (absolute resistance values).

If draw = TRUE, a plot object is returned showing the time series of pathway resistances.

Arguments

x: An object of class spwb, pwb, growth or fordyn. The function only works with the result of simulations with transpirationMode = "Sperry" or transpirationMode = "Sureau".
cohort: An string indicating the cohort for which resistances are desired.
relative: A boolean flag to indicate that relative percentages are desired as output.
draw: A boolean flag to indicate that a plot should be drawn (only pathway resistances, without discriminating between soil layers).
cumulative: A flag to indicate that drawn series should be cumulative.
xlab: x-axis label.
ylab: y-axis label.

Author

Miquel De Cáceres Ainsa, CREAF

Léa Veuillen, INRAE-URFM

Details