SoilR (version 1.1-23)

fW.Standcarb: Effects of moisture on decomposition rates according to the StandCarb model

Description

Calculates the effects of moisture on decomposition rates according to the StandCarb model.

Usage

fW.Standcarb(Moist, MatricShape = 5, MatricLag = 0, MoistMin = 30,  MoistMax = 350, DiffuseShape = 15, DiffuseLag = 4)

Arguments

Moist

A scalar or vector containing values of moisture content of a litter or soil pool (%).

MatricShape

A scalar that determines when matric limit is reduced to the point that decay can begin to occur.

MatricLag

A scalar used to offset the curve to the left or right.

MoistMin

A scalar determining the minimum moisture content.

MoistMax

A scalar determining the maximum moisture content without diffusion limitations.

DiffuseShape

A scalar that determines the range of moisture contents where diffusion is not limiting.

DiffuseLag

A scalar used to shift the point when moisture begins to limit diffusion.

Value

References

Harmon, M. E., and J. B. Domingo (2001), A users guide to STANDCARB version 2.0: A model to simulate carbon stores in forest stands. Oregon State University, Corvallis.

Examples

MC=0:500
DeadFoliage=fW.Standcarb(MC)
DeadBranch=fW.Standcarb(MC,MoistMax=200)
DeadWood=fW.Standcarb(MC,MoistMax=150)
StableSoil=fW.Standcarb(MC,MoistMin=15,MoistMax=100)
plot(MC,DeadFoliage$MoistDecayIndex,type="l",xlab="Moisture Content (%)",
     ylab="f(W) (unitless)",
     main="Effects of moisture on decomposition rates according to the StandCarb model")
lines(MC,DeadBranch$MoistDecayIndex,col=4)
lines(MC,DeadWood$MoistDecayIndex,col=3)
lines(MC,StableSoil$MoistDecayIndex,col=2)
legend("topright",c("Dead Foliage","Dead Branch","Dead Wood","Stable Soil"),
       lty=c(1,1,1),col=c(1,4,3,2),bty="n")