R/fT.Daycent2.R

In SoilR: Models of Soil Organic Matter Decomposition

#' Effects of temperature on decomposition rates according to the DAYCENT model
#' 
#' Calculates the effects of temperature on decomposition rates according to
#' the Daycent/Century models.
#' 
#' 
#' @param Temp A scalar or vector containing values of soil temperature for
#' which the effects on decomposition rates are calculated.
#' @return A scalar or a vector containing the effects of temperature on
#' decomposition rates (unitless).
#' @references Del Grosso, S. J., W. J. Parton, A. R. Mosier, E. A. Holland, E.
#' Pendall, D. S. Schimel, and D. S. Ojima (2005), Modeling soil CO2 emissions
#' from ecosystems, Biogeochemistry, 73(1), 71-91.
fT.Daycent2<-structure(
  function 
    (Temp     
     )
   {
      0.56+(1.46*atan(pi*0.0309*(Temp-15.7)))/pi
    }
    ,
    ex=function(){
      Temperature=0:50
      plot(Temperature,fT.Daycent2(Temperature),type="l",
           ylab="f(T) (unitless)",
           main="Effects of temperature on decomposition rates according to the DAYCENT model")
    }
)