soil multi-layered

Usage

soilML(precipt, CanopyT, cws, soilDepth, FieldC, WiltP, phi1 = 0.01, phi2 = 10, wsFun = c("linear", "logistic", "exp", "none"), rootDB, soilLayers = 3, LAI, k, AirTemp, IRad, winds, RelH, soilType = 10, hydrDist = 0, rfl = 0.3)

Arguments

precipt

Precipitation (mm).

CanopyT

Canopy transpiration.

cws

Current water status. Vector of length equal to soilLayers.

soilDepth

Rooting depth.

FieldC

Field capacity.

WiltP

Wilting point.

phi1

See wtrstr.

phi2

See wtrstr.

wsFun

See wtrstr.

rootDB

Root biomass (Mg/ha).

soilLayers

Integer used to specify the number of soil layers.

LAI

Leaf area index.

k

Light extinction coefficient.

AirTemp

Air temperature (Celsius).

IRad

Direct irradiance (\mu m^-2 s^-1).

winds

Wind speed (m/s).

RelH

Relative humidity (0-1).

soilType

See showSoilType.

hydrDist

Zero or otherwise positive integer. Zero does not calculate hydraulic distribution, otherwise does.

rfl

Root factor lambda. A Poisson distribution is used to simulate the distribution of roots in the soil profile and this parameter can be used to change the lambda parameter of the Poisson.

Examples

layers <- 5
ans <- soilML(precipt=2, CanopyT=2, cws = rep(0.3,layers),
soilDepth=1.5, FieldC=0.33, WiltP=0.13, rootDB=2, soilLayers=layers,
LAI=3, k=0.68, AirTemp=25,IRad=500, winds=2, RelH=0.8, soilType=6,
hydrDist=1)
ans

           cws rootATdepth waterIn layerDepth CanopyTra   SoilEvap   wsPhoto
[1,] 0.3006469           2   0.002        0.3         2 0.05921622 0.8387243
[2,] 0.3013333           0   0.002        0.3         0 0.00000000 0.8444444
[3,] 0.3013333           0   0.002        0.3         0 0.00000000 0.8444445
[4,] 0.3013381           0   0.002        0.3         0 0.00000000 0.8444844
[5,] 0.3013333           0   0.002        0.3         0 0.00000000 0.8444444
      wsSpleaf     drainage           J_w       K_psim      psim
[1,] 0.5358804 1.438281e-06 -1.437973e-06 4.027791e-08 -45.41469
[2,] 0.5482416 1.438281e-06 -1.439820e-06 4.027791e-08 -45.41469
[3,] 0.5482417 1.438281e-06 -1.439819e-06 4.027791e-08 -45.41468
[4,] 0.5483288 1.438281e-06 -1.438281e-06 4.028654e-08 -45.41091
[5,] 0.5482416 1.438281e-06 -1.438281e-06 4.028654e-08 -45.41091

See also

Author